# PA-DTI — A Discrete Trial Instructor

> A Discrete Trial Instructor (iPhone/iPad app by Lanovaz Lab Inc..)

- Source: https://appshunter.io/ios/app/pa-dti/id1501414441 (this page in markdown: same URL + `.md`)
- Developer: [Lanovaz Lab Inc.](https://appshunter.io/developer/1445462185)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 12.2 · 455 MB
- Languages: English, French
- Released: 2020-10-20
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/pa-dti/id1501414441/reviews.md

## What is PA?

Marc J. Lanovaz, Ph.D., BCBA-D, and his research team developed the PA-DTI to improve accessibility to evidence-based teaching practices for children with developmental disability (autism, intellectual disability, developmental delay). 

Derived from research studies in applied behavior analysis, educators and behavior analysts may use the PA-DTI to teach matching and receptive identification to children with developmental disability. The app relies on discrete trial instruction to teach 24 different programs (e.g., objects, colors, emotions, numbers, letters). 

The PA-DTI is highly customizable, which allows it to take advantage of each child’s strengths for learning. For example, educators and behavior analysts may optimize the teaching parameters (e.g., error correction, number of trials, reinforcement schedules). Furthermore, the app uses YouTube videos that serve as reinforcers for correct responding during teaching. These videos can be individualized according to each child’s preference.


## Version history (last 1 release)

### 1.1 — 2020-11-18

Update of the Terms & Conditions, Privacy Policy and FAQ

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*