Prosody Assessment vs TD Talk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prosody Assessment
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This is the client version of The Prosody Assessment, an interactive, 2-iPad assessment app that helps SLPs and their clients evaluate, understand, and address prosody challenges. You will need to download both this app and the Prosody Assessment - Examiner app in order to administer the assessment. Created by a team of SLPs and computer scientists and funded by the NIH, the Prosody Assessment evaluates 12 different areas of expressive and receptive prosody. The assessment concludes with an in-app results screen denoting areas of strength and challenge and clinicians are provided with a pdf report that can be printed or digitally shared with clients, caregivers, and staff. It can be administered in 45 minutes and features the voices of people of all ages and genders, real photographs, and big, bright, easy-to-touch response buttons. • Allows for quick and accurate identification of prosody challenges in clients ages 7-adult. • Equips clinician and client with a shared understanding of prosody that serves as a therapeutic foundation. • Provides actionable data for baseline, goal writing, and progress monitoring. • Enables a positive, strengths-based approach to future treatment. • Gives research-based insights regarding pitch, volume, and tempo of speech. • Built to be simple to use, easy to understand, and accessible to all.
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
Verdict
The clearest difference is update cadence: Prosody Assessment at every 2 weeks against TD Talk's every 2 months. Prosody Assessment also leads on iOS requirement (14.5 vs 17.2). On price, ads, in-app purchases and device support 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.
Prosody Assessment ships an update every 2 weeks, TD Talk every 2 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.
| Parameter | Prosody Assessment | TD Talk |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (11 ratings) — better |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | — | 11 — better |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPad | iPad |
| Requires iOS | 14.5 — better | 17.2 |
| Further details — not scored | ||
| Size | 32 MB | 305 MB |
| Age rating | 4+ | 4+ |
| Developer | BioSpeech, Inc. | Tobii Dynavox LLC |
In-app purchases
Prosody Assessment
No in-app purchases
TD Talk
No in-app purchases
Questions
Is Prosody Assessment free?
Is TD Talk free?
Do Prosody Assessment or TD Talk have ads?
Which is updated more often, Prosody Assessment or TD Talk?
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