iPad Screenshots


PECS Phase III App

Based on research from the field of Applied Behavior Analysis (ABA), the PECS™ protocol details a specific discrimination teaching strategy in Phase III. The PECS Phase III app is an invaluable tool that allows you to implement the teaching of Phase III of PECS™ and offers a novel approach to providing new opportunities for learners to practice discrimination techniques and strategies.
The app, designed to look just like a PECS™ communication book permits a teacher to practice picture discrimination with one or several learners within a single session. Touching the correct icon results in immediate visual and auditory feedback from the device in a manner far quicker than a teacher could react. If the learner touches an incorrect icon, there is no significant feedback. A correct picture selection results in access to a desire item or activity!

For teaching simple discrimination, the learner selects from an array involving the target picture versus a distracter picture. Both options allow you to move the pictures around on the page, between trials and to vary the number of pictures per trial from 2 to 12. A Correspondence Check™ can be tested by arranging two or more equally valued items and corresponding pictures with strategies from the Phase IIIB PECS™ protocol.

*App is not intended to replace your PECS communication book and/or to serve as a standalone communication system.

Features include;
-Over 100 Pics for PECS™ images
-Male and female voice with on/off option
-Customizable Library with your own pictures
-Visual guide to the 4-Step Error Correction Procedure and Correspondence Checks

What’s New

Version 1.3.0

Adjusted for iOS8 and iOS9. Sorry for taking long time to update the PECS Phase III app. If you are still experiencing a bug, please contact our support.

Bug Fixes:
• The app crashed at the launch (iOS9) - fixed.
• Opening a popover window twice caused a crash - fixed.
• Recording audio caused a crash - fixed.
• Launching the camera caused a crash (iOS8) - fixed.
• The Edit Picture window had a layout issue - fixed.

New Features:
• The welcome screen will be presented only at the first launch. To access the screen again, please tap on the help (question mark) icon.
• If the app is in the session mode, the app will be in the same session mode at the next launch.

Ratings and Reviews

4.0 out of 5
8 Ratings

8 Ratings

4Chris_2use ,

great start!

i purchased after reading the info, we have other apps for my nonverbal son but he has had the same PECs book for 6 years and i thought that he would see familiar things. i am excited that pryamid is in creation mode and i think this app works great on the basics. my son does discriminate and we are using this app more and more i dont know how to make the nest phase work like a real book but i can't wait to see what is next!

I love PECS Phase III! ,

I love this app!

I love this app! While this app is not a stand-alone communication device, it has been so helpful in teaching picture discrimination to my students. The app comes pre-stocked with 100 images which are great, but I love that I can add my own images. You can record audio for any image you add as well as re-record the audio for pre-stocked images. This is certainly a nice feature! The app allows you to customize the images and the tabbed insert pages. With the images, I've been able to adjust the size and display picture and text, picture only and/or text only for each image. With the insert pages, I've been able to change the color, change the number of velcro strips per page and adjust the spacing between the strips as needed.

I also love that there are visual cheat sheets for correspondence checks and the 4-step error correction! This comes in handy when I need a reminder!

Thanks to Pyramid for creating such a wonderful and useful app! Can't wait to see what they come up with next!

Mom the professional ,

Discrete trials

This app is a great tool for teaching children how to discriminate between pictures being used in PECS and other tasks. I really want to try the PECS IV now that I know this company makes high quality apps.


Pyramid Group Management
62.7 MB

Requires iOS 8.0 or later. Compatible with iPad.



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