Nothing you say ever leaves your iPhone. Live captions, amplification, and 19-language translation all run on the device itself. No account, no cloud.
OndaHear is your private, on-device hearing assistant. Hear every word, speak across 19 languages, and keep your conversations completely off the cloud.
WHAT IT DOES
LISTEN MODE
Real-time amplification with live captions. Boost soft voices, control background noise, and read what's being said as it happens.
LIVE TRANSLATION
Speak in any of 19 supported languages and read or hear it instantly in yours. Fully on-device — no servers, works offline after initial language download.
VOICE CONVERSATION
Pair with another device for a two-way captioned dialogue. Each person speaks in their preferred language and reads the other side translated live.
TEXT CHAT
Talk and your message is delivered aloud on the other phone, translated automatically. Perfect when speaking openly isn't an option.
HEARING TEST
Built-in audiogram across 6 frequencies. Get a personal hearing profile and apply audio settings tuned to your ears.
APPLE WATCH
Read live captions right on your wrist. Start, stop, and boost from there too — without reaching for your phone.
EXTERNAL MIC: THE BIGGEST UPGRADE
Captions are only as good as the audio that reaches them. Clip a small wireless mic on the person you are talking with, or set one beside the TV, and keep your phone with you. Voices arrive clean instead of competing with the room, and captions get far more accurate across distance and background noise.
The built-in Hardware Guide lists microphones tested with OndaHear.
PRIVACY-FIRST DESIGN
Most hearing apps send your voice to the cloud. OndaHear doesn't. Speech recognition, translation, and audio processing all run entirely on your iPhone, using Apple's on-device frameworks. The app even works in airplane mode.
• No audio recorded, transmitted, or stored on any server
• No analytics SDKs, no ads, no tracking, no data sharing
• No account required — no email, name, or personal information collected
• Saved transcripts stay on your device only
DEEP AUDIO CONTROL
• Volume Boost
• Compression, Noise Gate, Voice Enhance
• 3-band EQ (Bass / Mid / Treble)
• 6-band Premium EQ (250Hz–8kHz)
• Auto Gain Control, De-Esser, Limiter
• Save and switch between custom presets
PREMIUM SUBSCRIPTION
Free tier: 15 minutes/day of listening; 5 saved transcripts (7-day retention).
Premium unlocks unlimited listening, the Hearing Test, custom Hearing Profiles, the 6-band Premium EQ, unlimited transcripts (90-day retention), PDF export, and premium voice processing modes.
REQUIREMENTS
Bluetooth earbuds, wired headphones, or AirPods strongly recommended for best experience (prevents acoustic feedback). USB-C and wireless microphones supported.
Visit OndaHear.com for the full feature guide and what's new.
Terms of Use:
https://ondahear.com/terms.html
This is exactly what I’ve been looking for! I always worry about using apps that “listen” to you because I never know if my information is as protected as it should be, but with OndaHear, my data never even leaves my device! That alone would make this my favorite hearing booster, but the features really tip this app over the edge. You can make different hearing profiles to tailor the sound exactly how you need it in different environments and the quality is AMAZING. I love that you can have multiple inputs so I’m not choosing between hearing the TV clearly and hearing what someone in the room is saying. And captioning a live convo is a GAME-CHANGER for when my brain just won’t process what someone is saying. Can’t recommend this enough!
Developer Response
This honestly made my day. The privacy part wasn't a marketing decision — I'm hard of hearing myself and I didn't want my own conversations leaving my phone, so everything stays on-device. And you nailed why the multiple inputs and hearing profiles exist: real life isn't one listening environment. Thank you for taking the time to write this out.
Hear it all!
Kathycava
Excellent hearing and caption app. Easy to use, accurate captions, and great privacy. OndaHear has become part of my daily routine. The translate function is very easy to use for those times language is a barrier.
Developer Response
Thank you — "part of my daily routine" is exactly what I hoped for when I built this. Really glad the translation feature is helping when language gets in the way. I'm HoH myself, so hearing it's working for you means a lot.
Easy to use
triacuit1069
This is so easy to use and absolutely fantastic.
Developer Response
Thank you so much — "easy to use" is the highest compliment for an app like this. Appreciate you giving it a try!
Clearer wording when your daily free minutes run out, so it's obvious they come back the next day.
Improved reliability in Listen mode when your audio devices change.
Fixed a case where leaving and returning to the app could interrupt a Conversation session.
Version 2.2.7
The developer, TomDApps LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More