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Fortell AI Hearing Aids vs. Phonak Audéo Infinio Ultra

Check out our comparison of the Fortell AI Hearing Aids vs Phonak Audéo Infinio Ultra. Listen to audio samples and see how the two hearing aids differ in terms of sound performance, features, accessories, and more.

Score
4.5
Fortell AI Hearing Aids
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Fortell

AI Hearing Aids

SoundScore 6.0/5
$6,800 per pair
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Score
4.5
Phonak Audéo Infinio Sphere I90
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Phonak

Audéo Infinio Sphere I90

SoundScore 4.9/5
$4,598 per pair
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AI Hearing Aids
$6,800 per pair
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Audéo Infinio Ultra
$4,598 per pair
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Product Overview

AI Hearing Aids
Audéo Infinio Ultra
Form Factor
Form FactorThis type of hearing aid sits behind the ear. A wire runs along the top of the ear and down to a speaker sitting inside the ear canal. An custom-fitted mold may be required.
Form FactorThis type of hearing aid sits behind the ear. A wire runs along the top of the ear and down to a speaker sitting inside the ear canal. An custom-fitted mold may be required.
Expert Rating
Score
4.5
Score
4.5
User Rating
—
3.47 reviews
Hearing Loss LevelHearing Loss LevelThis represents HearingTracker's best guess on suitability. Please consult a licensed audiologist to confirm your own candidacy for this device.
MildModerateSevere
MildModerateSevere
Product Features
Hands-freeRechargeableiPhone
Hands-freeRechargeableiPhoneAndroidIP68

Expert Ratings

Compare comprehensive test results and expert opinions.

AI Hearing Aids
Audéo Infinio Ultra

HearingTracker Score

AI Hearing Aids
4.5EXCELLENT

Fortell AI Hearing Aids are rechargeable RIC devices that use Spatial AI to separate speech from background noise in real time. The new AI 2.0 software upgrade retrains that system on more real-world sound data to improve speech clarity in noise while maintaining natural-sounding voices.

Read full review
Audéo Infinio Ultra
4.5EXCELLENT

Phonak’s Infinio Sphere delivers genuinely standout speech clarity in loud, noisy places thanks to its DEEPSONIC “Sphere mode,” but you’ll trade some discretion and may wrestle with fit or Bluetooth pairing to get that top-tier performance.

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HearAdvisor SoundScore

AI Hearing Aids
6.0EXCELLENT

Fortell AI Hearing Aids achieved a SoundScore of 6.0/5 and a SoundGrade of A in HearAdvisor lab testing. The Prescription Hearing Aid category average SoundScore was 4.19/5.

Audéo Infinio Ultra
4.9EXCELLENT

Phonak Sphere Infinio Ultra achieved a SoundScore of 4.9/5 and a SoundGrade of A in HearAdvisor lab testing. It ranked #3 of 39 Prescription Hearing Aid devices tested. The Prescription Hearing Aid category average SoundScore was 4.19/5.

Build Quality

AI Hearing Aids
4.6EXCELLENT

Fortell AI Hearing Aids feel well built, though their IP54 rating offers less water and debris resistance than many prescription hearing aids, which commonly carry a higher IP68 rating. As with any hearing aid, regular cleaning and proper care will help keep them performing well over time.

Audéo Infinio Ultra
5.0EXCELLENT

Phonak Audéo Sphere Ultra have an excellent build quality with a robust, portable charging case and a high ingress rating of IP68.

Battery

AI Hearing Aids
4.6EXCELLENT

Fortell states that its hearing aids last around 24 hours per charge in the default All-day AI mode, so they should easily last a full day even if you rely heavily on the more processing-intensive “All voices” or “Front voices” programs.

Audéo Infinio Ultra
4.6EXCELLENT

Audéo Infinio Ultra offer around 17 hours of use per charge under normal use and streaming conditions. When using the new Sphere mode, battery life is around 10 hours which is an improvement over the original Sphere Infinio model. They take 3 to 4 hours to recharge, and a 30-minute quick charge can provide an additional 6 hours of use.

Bluetooth

AI Hearing Aids
3.0BELOW AVERAGE

While Fortell AI Hearing Aids support hands-free calling and audio streaming on iOS devices, they currently do not support Android, and the company has not announced a timeline for Android compatibility.

Audéo Infinio Ultra
5.0EXCELLENT

Phonak Infinio Ultra are compatible with both iOS and Android, offering wireless audio streaming and hands-free calls. Pairing is now easier directly from your phone's Bluetooth menu.

App Features

AI Hearing Aids
4.5EXCELLENT

The Fortell app offers useful controls for volume, a 3-band EQ, and several AI listening modes. While I found it easy to use and sufficiently flexible, it is more limited than many competing apps, with no tinnitus features, health tracking, or other extras.

Audéo Infinio Ultra
5.0EXCELLENT

I found the MyPhonak Hearing Aid app easy to use with many useful features, including health and fitness tracking.

Comfort

AI Hearing Aids
5.0EXCELLENT

I found Fortell AI Hearing Aids comfortable and similar in fit to other prescription receiver-in-canal hearing aids. Although the body is slightly larger than many competing devices, it should fit comfortably behind most ears without interfering with glasses or causing retention issues. Your provider can help you fine-tune your fit in office.

Audéo Infinio Ultra
5.0EXCELLENT

Phonak Audéo Sphere Infinio Ultra were extremely comfortable and lightweight in my ears. In general, hearing care providers can make numerous physical changes to prescription hearing aids to improve comfort.

Design

AI Hearing Aids
4.5EXCELLENT

Fortell AI Hearing Aids use a familiar receiver-in-canal design with a slightly larger body than many other "micro" prescription devices. However, they remain fairly discreet behind the ear. Several colors are currently available with more to come later in 2026.

Audéo Infinio Ultra
4.1AVERAGE

Phonak's new Audéo Sphere Infinio Ultra model shares the same notably larger size as the original Phonak Infinio Sphere. This is needed for its increased AI processing. While the larger size may be more noticeable, Sphere Ultra remains comfortable, and your provider should have no trouble adjusting the fit to your preference.

Value

AI Hearing Aids
3.2BELOW AVERAGE

Fortell AI Hearing Aids has a value score of 3.2/5 based on lab performance and public display price.

Audéo Infinio Ultra
3.5BELOW AVERAGE

Phonak Sphere Infinio Ultra has a value score of 3.5/5 based on lab performance and public display price.

Handling

AI Hearing Aids
4.8EXCELLENT

I found Fortell AI Hearing Aids easy to use and comparable to other receiver-in-canal devices. The app, charging case, and physical buttons all worked well, making day-to-day handling straightforward and giving me easy access to the controls I needed.

Audéo Infinio Ultra
4.8EXCELLENT

Infinio Ultra are easy to use and adjust using either the large multi-function button or MyPhonak app. I had no issues making adjustments with either.

Pro Support

AI Hearing Aids
4.0ABOVE AVERAGE

Fortell AI Hearing Aids are professionally fit and supported, but access is currently more limited than with major prescription hearing aid brands. In-person care is available in only a handful of major metropolitan areas, though additional clinics are planned. Fortell also offers fully remote care across 30 states, which expands access considerably for those comfortable with telehealth.

Audéo Infinio Ultra
5.0EXCELLENT

Prescription hearing aids like Infinio Sphere Ultra are fit by hearing care providers so you should receive quality care. The MyPhonak app also opens the possibility for remote programming and virtual follow-up appointments.

Lab Recordings

Listen to direct output recordings from our acoustic test lab.

AI Hearing Aids
Audéo Infinio Ultra
Busy CafeBusy CafeSpeech intelligibility improvement in loud environments
Hear this scene unaided, for comparison
AI Hearing Aids
Audéo Infinio Ultra
Quiet OfficeQuiet OfficeSpeech intelligibility improvement in quiet and moderate environments
Hear this scene unaided, for comparison
AI Hearing Aids
Audéo Infinio Ultra
Streaming MusicStreaming MusicStreaming music provides a full range of bass and treble
Hear this scene unaided, for comparison
AI Hearing Aids
Audéo Infinio Ultra

HearingTracker partners with HearAdvisor to provide recordings and performance data from an acoustic laboratory that follows standard scientific procedures. All hearing aids are fitted and performance-tested for mild sloping to moderate hearing loss. All audio samples cutoff above 10kHz.

Accessories

Compatible accessories for each hearing aid

AI Hearing Aids
Audéo Infinio Ultra
Accessory Connectivity
None

RogerDirect™

As a break-through in hearing technology, Marvel hearing aids feature RogerDirect™ which allows the Roger technology to stream directly to Marvel hearing aids without having to attach an external receiver. This major innovation makes Roger technology easier to use and more attractive for a broader group ranging from mild to profound hearing loss. Roger technology makes use of intelligent and adaptive algorithms that continuously measure and precisely analyze noise levels to keep the Roger signal clearly audible above the background noise.

Battery Charger

Fortell Charging Case+1

Portable charging case with an integrated lithium-ion power bank, rated IP54 and charged over USB-C. Holds 72+ hours of additional listening, roughly three full recharges of a pair, and reaches full charge in 8 hours. Three separate 3-LED arrays report the left aid, the right aid and the case itself; the case button also drives pairing and reset.

ChargerGo RIC Sphere Infinio+1

Charger with integrated battery

Remote AdjustmentsRemote AdjustmentsAllows your hearing provider to make adjustments to your hearing aids remotely (from home, etc)
None

myPhonak App+2

The myPhonak app allows you to access remote support, information about their hearing aids, and a hearing diary. The app also allows you to adjust the volume and pitch of your hearing aids, and change program settings.

Remote Control
None

RemoteControl

The Phonak RemoteControl provides a discreet way to control your Phonak hearing aids.

Remote Microphone
None

Roger Table Mic II+1

Phonak Roger Table Mic II is a microphone dedicated for working adults who participate in various meetings. It selects the person who’s talking and switches automatically between the meeting participants.

PartnerMic™

Discreet remote microphone that helps to boost your partners voice in one-to-one conversations in noise.

Smartphone App

Fortell App+1

iPhone companion app for Fortell wearers. Shows connection status and per-device battery, controls volume for both aids together or independently with per-device mute, switches listening modes, enables sleep mode, and provides a three-band equaliser plus a separate one for streamed audio. It is also the channel for messaging the wearer's Fortell audiology team and for remote fitting, both realtime and asynchronous.

None
TV Streamer
None

Roger Select™+4

Phonak Roger Select is a microphone specifically designed to help boost your hearing performance and keep you at the heart of the conversation.

TV Connector

The Phonak TV Connector is a wireless accessory that streams audio directly from your TV or stereo system to your Phonak hearing aids, transforming them into wireless stereo headsets. Enjoy high-quality sound, independent volume control, and a long transmission range of up to 15 meters.

Roger On+1

Phonak Roger On is an advanced remote mic accessory developed by Phonak. It is designed to improve speech understanding in noisy environments, over distance, and when many people are speaking simultaneously. Equipped with MultiBeam 2.0 Technology, it provides a boost in understanding by capturing voices from all directions. The Roger On can connect to a variety of multimedia devices and is fully compatible with almost all hearing aids and cochlear implants that have a T-coil or a Roger receiver.

Hardware

AI Hearing Aids
Audéo Infinio Ultra
AccelerometerAccelerometerThis hearing aid is capable of measuring acceleration through an embedded sensor.
No
Yes
Bluetooth® AudioBluetooth® AudioThis hearing aid is capable of streaming Bluetooth® audio certain phones and/or devices.
  • Made for iPhone (MFi)
  • Bluetooth® (A2DP)
  • Bluetooth® Low Energy (LE)
  • Auracast™ Ready
Hands-Free CallingHands-Free CallingIt is possible to have a hands-free phone call with this hearing aid. You are not required to hold the phone up to your mouth.
  • Made for iPhone (MFi)
  • Bluetooth® (HFP)
  • Bluetooth® Low Energy (LE)
IP RatingIP RatingIP Ratings rate sealing effectiveness of hearing aids against intrusion from foreign solid matter (dirt, dust) and moisture.
No
IP68
Push ButtonPush ButtonThe hearing aid features a push button which allows toggling across different sound processing programs
  • Volume Control
  • Program control
  • Call accept/reject
  • Program control
  • Volume Control
  • Audio Stream Mix
Rechargeable BatteriesRechargeable BatteriesCharge your batteries overnight in a docking station and get a full day's use (in most cases) of battery life the following day.
Lithium-ion
Lithium-ion
Tap ControlsTap ControlsThe hearing aid may be controlled by physically tapping it with your fingers.
No
  • Voice assistant
  • Accept/end calls
  • Pause/Resume
  • Tinnitus program
Voice AssistantVoice AssistantCertain devices will allow you to interact with voice assistants using "Hey Siri", "Hey Google", "Hey Alexa", etc commands.
No
  • Siri
  • Google
Volume RockerVolume RockerA volume rocker or wheel to allows the adjustment of volume with a finger.
No
Yes

Software Features

AI Hearing Aids
Audéo Infinio Ultra
Adjustment BandsAdjustment BandsThese are frequency-divided sections that can be adjusted in a hearing aid in order to amplify sounds. Although there are rarely more than 10 frequencies measured in a hearing assessment, having more bands that can be adjusted may allow for improved speech understanding and user comfort.
No
20
Adjustment SynchronizationAdjustment SynchronizationThis feature allows for a more pleasant listening experience by ensuring that both hearing aids process sound the same way. If one hearing aid changes its processing in response to noise or speech, it will send a wireless signal to the other hearing aid so both process sound in the same way.
No
QuickSyncQuickSyncOne touch on the program selection button or volume control results in instant identical change in the other instrument.
AI Noise RemovalAI Noise RemovalArtificial Intelligence is utilized to remove or modify background noise from the sound signal to help isolate speech for better speech understanding.
Spatial AISpatial AIThe separation network attenuates competing speech as well as non-speech noise -- the case conventional digital noise reduction cannot address, because competing speech occupies the same frequency bands as the target talker and shifts constantly.Also covers Machine Learning, Unique Amplification Strategy
No
Audio Stream MixerAudio Stream MixerAllows the user to adjust the volume of the audio stream relative to the microphone input using the push button or volume control on the hearing aid unit.
Yes
Environmental BalanceEnvironmental BalanceEnvironmental balance is a volume modification capability in Phonak Audéo B-Direct hearing aids that allows clients to adjust the volume of the streamed signal versus the surrounding environmental sounds by the press of the volume control.
Direction SelectionDirection SelectionAllows the user to select one or more directions to focus their hearing aids on. For example, some hearing aids allow the listener to focus on sounds coming from in front or back, or from the right or left.
Front VoicesFront VoicesThe wearer selects front-only focus by hand, from the companion app or by holding the mode button on the right hearing aid. Fortell does not switch modes automatically: the difference between its modes is large enough that being in the wrong one costs more than automatic switching saves.FrontAlso covers Spatial Noise Cancellation
No
DirectionalityDirectionalityDepending on the types and number of microphones a hearing aid has, the hearing aid may be able to boost sounds from specific directions (by reducing sounds from other directions). This can be helpful to focus on a speaker directly in front of the hearing aid user, as well as to give the user information about where different sounds are coming from.
Adaptive
StereoZoom 2.0StereoZoom 2.0Improves signal-to-noise ration in background by focusing a narrow microphone beam.UltraZoomUltraZoomDirectional microphone technology is a proven method of effectively improving speech intelligibility in background noise. UltraZoom is the adaptive multi-channel beamforming technology, automatically available in AutoSense OS or in a manual program.Premium
Ear SimulationEar SimulationThe outer ear, or pinna, can have a significant effect on the frequency shape of sound arriving at your inner ear. Some hearing aids mimic the "pinna effect" when producing sound, to deliver more natural sound to the listener.
No
Real Ear SoundReal Ear SoundReal Ear Sound simulates the performance characteristics of the pinna. This restores localization and the ability to experience natural sound perception.
Environmental AdaptationEnvironmental AdaptationThe hearing aid can detect different acoustical environments, like speech in noise, and adjust the sound of the hearing aid accordingly to drive comfort or speech understanding, etc.
No
AutoSense OS: 6.0AutoSense OSHearing aids with AutoSense OS recognize and automatically adapt to more of your client’s listening situations than ever before. AutoSense OS accurately captures and analyzes the sound environment, then precisely blends feature elements from multiple programs in real time to provide a seamless listening experience.
Feedback SuppressionFeedback SuppressionIf any sound amplified by the hearing aid escapes the ear canal, it may reach the hearing aid’s own microphone and cause a harsh whistling noise. Some hearing aids are able to recognize when this feedback occurs and reduce or eliminate it.
Yes
WhistleBlockWhistleBlockWhistleBlock differentiates between naturally occurring feedback-like sounds and true feedback. This means increased audibility and sound quality that is free from annoying feedback.
Frequency LoweringFrequency LoweringUnderstanding certain speech sounds is dependent on the high frequency parts of these sounds. For individuals with high frequency hearing loss, this feature can take high frequency speech information and move it to lower frequencies where it will be audible.
No
SoundRecover2SoundRecover2The new SoundRecover2 algorithm aims to restore the audibility of relevant high frequency sounds while leaving intact the low frequency structures important for good sound quality. The new frequency lowering scheme retains the essence of the original SoundRecover, utilizes an adaptive algorithm and an additional cut-off frequency in order to successfully extend these benefits to those with more extreme severe-to-profound hearing loss.
Listening ProgramsListening ProgramsNumber of manually accessible listening programs (using push button, remote, app, or other switching method)
4
4
Machine LearningMachine LearningThis hearing aid employs machine learning to bring a higher degree of computer-aided intelligence to decision making.
Spatial AISpatial AIThe network runs continuously on a custom machine-learning coprocessor inside each hearing aid -- no external processing unit and no phone-tethered processing -- rather than being triggered by a scene classifier.Also covers AI Noise Removal, Unique Amplification Strategy
No
New User AdaptationNew User AdaptationProvider may set the hearing aid to gradually get louder over the first few weeks or months of a new hearing aid fitting. This can be convenient for new users who want to experience maximum benefit without making a lot of trips to the provider for tune ups.
No
auto Acclimatizationauto Acclimatizationauto Acclimatization is used to automatically increase the client's amplification, while the client is using the device.
Noise ReductionNoise ReductionThis feature uses modern hearing aids’ processing power to examine the incoming sound signal, determine if noise is present and reduce the volume of the troublesome sound to increase comfort.
Yes
NoiseBlockNoiseBlockHigh-resolution noise cancellation - NoiseBlock Processing is particularly effective at reducing uncomfortable environmental noises. It can recognize the subtle differences between speech and non-speech sounds, removing noise while maintaining audibility. more
Occlusion ReductionOcclusion ReductionWhen ears are plugged, or occluded, by hearing aids the low frequencies from one’s own voice are amplified and may be uncomfortable. This effect is typically reduced in hearing aids through venting or open-fit models. In some cases the perception of occlusion may also be reduced through software by adjusting the acoustic output of the hearing aid.
No
AOVAOVAcoustically Optimized Venting (AOV) reduces occlusion to the lowest level possible by optimizing the fitting calculation.
Phone in StereoPhone in StereoThis feature allows input from a phone presented to one hearing aid to be transmitted to both hearing aids at the same time, improving speech understanding.
No
DuoPhoneDuoPhoneWith DuoPhone, as soon as the phone is held to the ear the signal is heard in both ears. Background noise is reduced and clarity significantly improved.
Preference AdaptationPreference AdaptationIf a hearing aid user frequently adjusts the volume or program settings of their devices, some hearing aids will recognize when and where these changes are made and begin automatically making these changes in those settings.
No
User Preference TuningUser Preference TuningRemembers adjustments you make with FlexControl and FlexVolume and applies them automatically for a hearing aid more in tune with your preferences.
Processing ChannelsProcessing ChannelsThese are all the frequency-divided sections the hearing aid is able to examine at a single time. The hearing aid uses this information to determine whether the contents of each section are noise, speech, or something else and amplify the sound in each section accordingly.
8
No
Spatial Noise CancellationSpatial Noise CancellationThis feature recognizes where sounds are coming from and can reduce noise coming from behind or to the side of the listener. This helps the listener focus on the speaker, usually in front of them.
Front VoicesFront VoicesListening mode that amplifies only the conversation in front of the wearer, excluding competing talkers to the rear and sides along with non-speech noise from any direction. This is the processing evaluated in Fortell's published intelligibility and listening-preference trials.Also covers Direction Selection
Dynamic Noise CancellationDynamic Noise CancellationAn automated spatial noise cancellation system that works in combination with a directional beam-former microphone system.
Sudden Loud Noise ReductionSudden Loud Noise ReductionThis feature detects loud sounds and reduces their volume to a comfortable level. Though not a replacement for hearing protection, this technology can greatly improve listener comfort.
Yes
SoundRelaxSoundRelaxSoundRelax cushions otherwise unpleasant impulse sounds without affecting speech clarity or causing unnatural perception of other sounds.
Tinnitus ReliefTinnitus ReliefTinnitus, or ringing in the ears, can be addressed by hearing aids in several different ways, such as introducing a soft therapeutic signal or targeted notched noise.
No
Tinnitus BalanceTinnitus BalanceThe Tinnitus Balance noise generator generates a broadband sound for use in tinnitus management therapies.
Unique Amplification StrategyUnique Amplification StrategyHearing aids all process sounds a little bit differently. Sometimes it varies even within one model.
Spatial AISpatial AISource-separating neural network that models both what a sound is and where it comes from. It reads sub-millisecond differences in timing, spectral content and amplitude across the microphones to split the incoming scene into sound that should be amplified and sound that should not, then amplifies only the former. Unlike a beamformer, which passes whatever falls inside its spatial filter, direction here is one input to a learned separation model that also reasons about whether a sound is a talker the wearer is attending to.Also covers AI Noise Removal, Machine Learning
Motion Sensor HearingMotion Sensor HearingA new ultra-low power accelerometer detects when you move and adjusts the hearing aid microphones and noise cancellation settings.Speech EnhancerSpeech EnhancerAmplifies the peaks of soft speech to provide clearer speech when you’re in a quiet environment.
Wind Noise ReductionWind Noise ReductionAs wind blows against the microphones of hearing aids, unpleasant noise may be generated. Some hearing aids have the ability to recognize this wind noise and reduce its level. Such reductions may also affect the audibility of desired sounds, like speech.
Yes
WindBlockWindBlockWindBlock utilizes a wind identification and classification system. The powerful, adaptive algorithm automatically suppresses wind noise. It allows wearers to enjoy the outdoors without compromise.