Survey on use of technology & aphasia (272 respondents)
38% with aphasia used Predictable
80% service providers recommended Predictable
CITCEN report:

Predictable, a multi-award winning Augmentative and Alternative Communication (AAC) text-to-speech app.

Designed for people who cannot speak because of conditions such as:
- Autism
- Cerebral Palsy
- Down’s syndrome
- Learning difficulties
- Stroke / Aphasia
- Laryngectomy
- Apraxia

Using a smart word prediction technology, the app makes speaking out a text-based message easy.
The software learns from your patterns of use and predicts what you will type next in your message easily and accurately.

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

No WiFi needed to use most the app (only needed to backup your account data).

Main features:
Compatible with the iOS voices,
Use your voice-banked voice from ModelTalker or Acapela My-own-voice
Change the rate and pitch of the iOS voices

Switch Access: accessible via Bluetooth switch box + switch/es (compatible with Therapy Box Switch Box and RJ Cooper Switch Interface)
Face switch: Use face gestures to trigger a selection
Compatible with the iOS method of scanning
Configurable settings for auto or user scan
Touch Anywhere: use the whole screen as a switch with scanning
Head tracking: use facial recognition to interact with the app (available on Pro devices only)
New selection triggers: blink, smile, frown, etc. to select items on the screen
Scan & Tracking: combine different progression and selection access methods

Predictable 6 offers a large selection of customisable emojis.
Attach recordings to your emojis

Phrase bank
Link your phrases in categories to YouTube videos, iTunes songs or website URLs

Web platform
Manage your phrase bank content from the web platform
The phrase bank content is now compatible with format

Different keyboard options to choose from (10 Key, QWERTY, ABCD, High Frequency, Apple and any other Bluetooth or downloadable keyboard).
Ultra customisable UI
Use the notepad for on-screen handwriting that works with the word prediction
Customise your Predictable appearance by changing font, colours and other settings
High Contrast option
Ability to increase the size of the word prediction text

Customer Support
User guides available on your app, on Therapy Box website and upon request
Send a support request directly from your app
Call us up with any queries or problems
Short tutorial videos available from the app
Take the web training on Therapy Box website and get certified!
Join Therapy Box Facebook community to get help from other users

You can find more information about Predictable at

What’s New

Version 6.0.23

Now including Eye Tracking! Predictable can now be used with Eye Tracking via the Irisbond Hiru. Activate eye tracking via Settings > Accessibility > Eye Tracking
Updated grid view - grid view now has a new look. Categories and phrases now have their own pages, and your phrasebank is fully editable from grid view.

Ratings and Reviews

4.4 out of 5
119 Ratings

119 Ratings

Andy Bilverstone ,

Good App

I’ve got this on work and personal devices and it works really well with my Acapela generated voice. One irritation is I can copy and paste into Predictable on one device but not the other? Both are iPads

Developer Response ,

Hi Andy - thanks for the feedback - we will check out the issue you've reported on your second iPad. Can you drop us a line at

Stevewad ,

Absolute must for anybody with a speech problem.

I have recently been diagnosed with Progressive Supranuclear Palsy (PSP) which amongst other things affects my vocal chords. To put it simply I am unable to speak coherently & I found it frequently frustrating to make myself understood. Luckily my Voice therapist told me about this app (Predictable) she said if I contacted The Therapy Box they would most likely give me a free trial. Which I did & they very kindly gave me a 77 day trial through the Test Flight app. It didn’t take me long to realise that I didn’t need 77 days to find out that I neede Predictable in my life. It truly has been a godsend ,to say it has transformed my life now would be an understatement. I now don’t have to worry that I won’t be understood all I have to do now as soon as someone can’t make out a word I have said I just type it in the app & the app utters it aloud. That’s not all you can even choose the gender & even pick the accent of the voice you want to use. It’s an amazing app,I still haven’t scratched the surface with all the app îs capeable of yet. But for me the best part is that you save phrases that you use often in your favourites section so they can be accessed in a jiffy.
Thank you The Therapy Box I doff my hat to you.

Developer Response ,

Thanks for your feedback which we will pass on to all the team who work on Predictable!

Mark mufc ,

Perfect if speech problem

I have difficulty in speaking in general because of my brain injury
This works wonders taking away my frustration to get my point across
Highly recommended

Developer Response ,

Thanks for the review Mark. I will pass it on to the team

App Privacy

The developer, Therapy Box Limited, 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 Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • User Content
  • Identifiers
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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