Comparison

TD Talk vs Mega Key

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

Mega Key

This app offers a custom large-format keyboard for iOS, featuring keys 40% larger than the default. It aims to enhance typing accuracy and ease for users with fine motor challenges, providing optimized layouts and multiple keyboard options.

Highlights
  • Large-format keys (40% larger)
  • Optimized layout for accuracy
  • Three keyboard choices (ABC, QWERTY, QWERTY-split)
  • Split keyboard option
  • Designed for fine motor difficulties
Features
Read full description

A custom large-format keyboard for iOS designed to improve accessibility for users with fine motor difficulties. Each key is approximately 40% larger than on the default keyboard, with an optimized layout making typing easier and more accurate. Word completion and next-word prediction features have been added to speed up typing. Includes three keyboard choices (ABC, QWERTY, and QWERTY-split (The keyboard is split into two halves, one of which is displayed on the screen at a time. You can switch between the halves)), as well as a keyboard with numbers and symbols.

Screenshots

Mega Key4 screens

Verdict

The call

The clearest difference is update cadence: TD Talk at every 6 weeks against Mega Key's every 6 months. TD Talk also leads on review sentiment (75% vs 64%). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for TD Talk against 4.0 for Mega Key. Both are backed by a comparable volume of ratings — 10 and 12 respectively. Written reviews are what separate them: 75% of TD Talk's written reviews are positive against 64% of Mega Key's.

UpkeepUpdate frequency

TD Talk ships an update every 6 weeks, Mega Key every 6 months. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
TD Talk versus Mega Key: the parameters behind the verdict, then further details
ParameterTD TalkMega Key
PriceFreeFree
Rating4.1 (10 ratings) — better4.0 (12 ratings)
Positive reviews75.0% of reviews — better63.6% of reviews
Number of ratings1012 — better
Update frequencyEvery 6 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad — better
Requires iOS17.216.0 — better
Further details — not scored
Size305 MB14 MB
Age rating4+4+
DeveloperTobii Dynavox LLCYanling Wang

Customer experience

TD Talk

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Mega Key

All ratings11 ratings
Positive72.7%
Neutral9.1%
Negative18.2%
Written reviews11 reviews
Positive63.6%
Neutral9.1%
Negative27.3%

In-app purchases

None

TD Talk

No in-app purchases

None

Mega Key

No in-app purchases

Questions

Is TD Talk free?
TD Talk is free to download, with no in-app purchases.
Is Mega Key free?
Mega Key is free to download, with no in-app purchases.
Which has better reviews, TD Talk or Mega Key?
TD Talk is rated higher. TD Talk averages 4.1 out of 5 from 10 ratings, while Mega Key averages 4.0 from 12 ratings.
Do TD Talk or Mega Key have ads?
Neither TD Talk nor Mega Key shows ads.
Which is updated more often, TD Talk or Mega Key?
TD Talk ships an update every 6 weeks, and Mega Key every 6 months. Most recently, TD Talk was updated on October 3, 2026 and Mega Key on October 2, 2026.

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