Obradovic Lab AMES vs PixWriter Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Obradovic Lab AMES
This iPad application is designed for researchers to assess executive functions and delay of gratification in children. It features three distinct tasks and has been validated with children aged 4-12 across multiple countries.
- Executive function assessment
- Delay of gratification tasks
- Child-focused research tool
- Validated with ages 4-12
- Cross-cultural testing
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The Assessment of Motivation, Effort, and Self-Regulation (AMES) is an iPad app for researchers. It includes three tasks designed to assess executive functions and delay of gratification in children. The app has been tested extensively with children age 4 to 12 in the U.S., Ivory Coast, and Ghana.
PixWriter Lite
This picture-assisted writing tool helps beginning writers of any age compose documents independently. Students can select word bank buttons or type with a keyboard, with symbols automatically added. The Lite version can receive files from the full PixWriter app for reading aloud and printing.
- Picture-assisted writing
- Symbol support
- Highlighted text and speech
- Customizable vocabulary word banks
- Receive files from full PixWriter app
- Read aloud functionality
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Note: PixWriter Lite is a free app. It permits one file to be created and edited, but not shared or printed. PixWriter Lite can also receive files created with the PixWriter app. Students can use those files to write, read aloud, and print their own documents. The Lite version can be upgraded to the full version through the in-app Store. PixWriter™ is a picture-assisted writing tool for beginning writers of any age. The combination of symbol support with highlighted text and speech help students write independently. Students can compose written documents without mastering phonics, spelling, and alphabet skills. Students write by selecting word bank buttons, typing with a keyboard, or both. Word bank buttons are filled as the instructor types words followed by the spacebar; symbols are automatically added as words are typed. Customized vocabulary word banks can be created to fit the student’s abilities, assignment requirements, and IEP goals. Documents can be printed, saved, and shared via email and AirDrop. PixWriter Lite is a separate and free app. It can receive, read aloud, and print documents that have been created with the full featured PixWriter program.
Verdict
The clearest difference is in-app purchases: Obradovic Lab AMES at none against PixWriter Lite's 1. Obradovic Lab AMES also leads on iOS requirement (11.0 vs 15.0). On price, rating, ratings volume and update cadence 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. PixWriter Lite sells 1 one-off in-app purchase. Obradovic Lab AMES asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Obradovic Lab AMES against 5.0 for PixWriter Lite. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Obradovic Lab AMES ships an update every 5 months, PixWriter Lite every 4 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.
| Parameter | Obradovic Lab AMES | PixWriter Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPad |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 342 MB |
| Age rating | 4+ | 4+ |
| Developer | Stanford University | Attainment Company |
Customer experience
Obradovic Lab AMES
PixWriter Lite
In-app purchases
Obradovic Lab AMES
No in-app purchases
PixWriter Lite
- Full Version$69.99
Questions
Is Obradovic Lab AMES free?
Is PixWriter Lite free?
Which has better reviews, Obradovic Lab AMES or PixWriter Lite?
Do Obradovic Lab AMES or PixWriter Lite have ads?
Which is updated more often, Obradovic Lab AMES or PixWriter Lite?
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