TD Talk vs Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TD Talk
This app enables communication for individuals unable to use their voice or hands. It offers text-to-speech functionality through eye-tracking or touch input, supporting a wide range of languages and voices for natural conversation.
- Eye-tracking communication
- Touch input for typing
- Customized predictive sentence construction
- In-sentence editing
- 35+ languages and voices
- Face-to-face conversation mode
- QuickMessages for common phrases
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TD Talk is a text to speech app that empowers people to talk using just their eyes or fingers. It’s designed for literate adults who cannot use their voice, their hands or both, including people with disabilities such as ALS/MND, multiple sclerosis, muscular dystrophy, cerebral palsy and locked-in syndrome. When used with TD Pilot, an iPad-based, eye tracking-enabled speech generating device by Tobii Dynavox, it unlocks the ability to: • talk using just your eyes via the world’s leading eye tracking technology • talk using just your fingers, by typing the words you want to speak • join any conversation with fast, customized, predictive sentence construction • correct typos with in-sentence editing using just your eyes • express yourself in 35+ languages and voices • have face-to-face conversations via the Partner Window on a TD Pilot device Join the conversation TD Talk empowers people to communicate who they are and what they want to say, in the most fluid way possible: Converse naturally • participate naturally in dialogue by displaying your typed text to your conversation partner in the rear-facing Partner Window on a TD Pilot device • select your language of choice and switch to it seamlessly Express yourself quickly • remain an active part of any conversation with the ability to use predicted text and to edit errors directly within a sentence • maintain a more natural speaking pace with QuickMessages, pre-programmed common and custom phrases such as ‘I need help’ and ‘wait please, I’m typing’ Sound like yourself • express yourself more fluidly thanks to phrase prediction, which learns and adapts to your personal communication style • choose from a selection of voices to find one you most identify with • Import a custom synthetic voice that mimics your natural one with voice banking from one of the following vendors: Acapela (my-own-voice), Model Talker, The Voice Keeper, ElevenLabs Using TD Talk without TD Pilot Some people may want to try TD Talk on an iPad without using TD Pilot, such as: • those with progressive degenerative conditions transitioning from touch to eye gaze access • clinicians who want to try TD Talk on behalf of their clients • hospitals and other institutions PLEASE NOTE, using TD Talk on an iPad without the TD Pilot device will mean: • touch access only (no eye tracking access) • a smaller selection of languages and voices For more information Visit: us.tobiidynavox.com/products/td-talk Customer support: us.tobiidynavox.com/pages/contact-us
Echo
This communication aid uses auditory scanning for individuals with visual and physical impairments. It offers sound cues and distinct voices for navigation and expression, accessible via switches, gestures, or arrow keys.
- Auditory scanning communication method
- Sound cues for navigation
- Separate voices for cues and speech
- External switch access
- Swipe gesture control
- Arrow key navigation
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Echo is an AAC app designed for those with a visual difficulty and physical difficulty to access communication. Echo is based around the concept of auditory scanning. Auditory scanning is a communication method using sound cues or auditory feedback rather than visual cues. This method is especially valuable for those with a visual impairment who cant access visual based AAC. Echo provides you with two different voices, one for your auditory cues and the another to represent your voice. You can access Echo using the following methods. - Any external switch (or combination of switches) - Swipe Gestures - Arrow Keys We have plans to extend this in the future to allow for more access methods.
Screenshots
Verdict
The clearest difference is rating: Echo at 5.0 against TD Talk's 4.1. Echo also leads on update cadence (every 2 weeks vs every 6 weeks). TD Talk's advantage is ratings volume (10 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Echo holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: TD Talk has 10 ratings behind it against 1, so its average is the more settled of the two.
TD Talk ships an update every 6 weeks, Echo every 2 weeks. The most recent releases landed on September 16, 2026 and September 17, 2026 respectively.
| Parameter | TD Talk | Echo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (10 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 17.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 305 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Tobii Dynavox LLC | Ace Centre |
Customer experience
TD Talk
Echo
In-app purchases
TD Talk
No in-app purchases
Echo
No in-app purchases







