Predictable, a multi- award winning app, gives a voice to people!
Designed for literate individuals who have lost the ability to speak; possible due to cerebral palsy, MND, a laryngectomy, stroke, apraxia or brain injury.
Using the latest word prediction technology the app makes speaking out a text based message easy.

Featuring a world class software which learns from your patterns of use and thereby predicts what you will type next in your message easily and accurately.
Predictable makes typing (in both American and British English) accurate and speedy!

Categories, in Predictable, make it possible to save your frequently used phrases or sentences and easily retrieve them when you want to speak them.

If you still aren’t convinced, have a look at these amazing app features:

Change the rate and pitch of the iOS voice
Different keyboard options to choose from (10 Key, QWERTY, ABCD, High Frequency, Apple and any other downloadable keyboard).
Replace the keyboard with a note pad for on-screen handwriting that works with the word prediction
Customise your Predictable look by changing texts, colours and other settings
High Contrast option
Ability to increase the size of the word prediction text

Encourage Communication
Link your phrases in categories to YouTube videos, iTunes songs or website URLs
Have discrete conversations without text-to-speech in the Publish mode
Options for increased auditory prompting and visual feedback
News Feed to keep up with the latest news from around the world
Send SMS**, Email*, update Facebook* or send a tweet on Twitter*
No WiFi needed to use most the app (only needed for updating news stories and sharing via email or social media)

Switch Access
Accessible via Bluetooth switch box + switch/es (compatible with Therapy Box SwitchBox and RJ Cooper Switch Interface)
Compatible with the iOS method of scanning
Configurable settings for auto or user scan
Use the whole screen as a switch with scanning (Touch Anywhere method)

Customer Support
User guides available on your app, on the website and upon request
Send a support request directly from your app
Call us up with any queries or problems
Short tutorial videos available

Our Proudest Moments:
“A company to watch in the future. Again, I like what they stand for and that the heart of their business is the desire to help people and their families be able to communicate with one another. Impressive awards and impressive company!’ Sir Richard Branson, founder of Virgin Group.
2011: Mphasis Universal Design Award - Predictable
2013: Ericsson App Award Winner – Predictable
2014: Queen’s Award for Enterprise: Innovation – Therapy Box
2014: Appsters Most Innovative App - Predictable
2015:- TechUK mHealth Best App Developers - Therapy Box
2015 - Nectar Small Business Award - Therapy Box
2016: German Medical App Award - Predictable
2016: Talent Unleashed Award - Digital SME (Tech innovation)
VOLUME PURCHASE PROGRAM - 50% off to enrolled organisations
You can find more information about Predictable (including a full feature list to help gauge suitability) at

What’s New

Version 5.4.1

Bug fixes

Ratings and Reviews

4.6 out of 5
68 Ratings

68 Ratings

Paul 12261 ,

Thank you Predictable

Thank you Predictable
now am able to interact with people with ease and I am happy to speak to my grand children again

Developer Response ,

Hi Paul,
Thanks for leaving such lovely feedback. We know how important being able to speak with family is - so if Predictable has helped with this, then we are so pleased - Rebecca

Bruce UCPSD ,

Worth the cost

The number of apps for Augmentative and Alternative Communication has exploded, but the quality of most of the free and low-cost apps is a big problem. I work at a regional Assistive Technology Center where people come for assistance in considering AT to help with their particular physical or speech/language challenge. For a literate young or older adult, Predictable is by far the best text-to-speech app available. You get what you pay for, and in Predictable, it has solid performance, an easy to learn interface, and useful settings to costomize and make it fit particular needs. When I've had questions, their tech support has been responsive and thorough. I'm not paid by the company, but actually, if I could, I'd love to work for them. Their product rocks, and it's made a postive impact in the lives of people I work with.

Dissatisfiedceleste ,

Great app...

This is a great app, but when you are using this app, it keeps asking for your password. Please fix this. Also can you please make it full screen on the iPhone X? Thank you.


Therapy Box Limited
2.3 GB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like