Comparison

Obradovic Lab AMES vs PixWriter Lite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Executive function assessment
  • Delay of gratification tasks
  • Child-focused research tool
  • Validated with ages 4-12
  • Cross-cultural testing
Features
Read full description

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.

About

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.

Highlights
  • Picture-assisted writing
  • Symbol support
  • Highlighted text and speech
  • Customizable vocabulary word banks
  • Receive files from full PixWriter app
  • Read aloud functionality
Read full description

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 call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PixWriter Lite sells 1 one-off in-app purchase. Obradovic Lab AMES asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 6 level
Obradovic Lab AMES versus PixWriter Lite: the parameters behind the verdict, then further details
ParameterObradovic Lab AMESPixWriter Lite
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPad
Requires iOS11.0 — better15.0
Further details — not scored
Size32 MB342 MB
Age rating4+4+
DeveloperStanford UniversityAttainment Company

Customer experience

Obradovic Lab AMES

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

PixWriter Lite

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Obradovic Lab AMES

No in-app purchases

1 purchases

PixWriter Lite

One-time1
  • Full Version$69.99

Questions

Is Obradovic Lab AMES free?
Obradovic Lab AMES is free to download, with no in-app purchases.
Is PixWriter Lite free?
PixWriter Lite is free to download, with in-app purchases available.
Which has better reviews, Obradovic Lab AMES or PixWriter Lite?
Obradovic Lab AMES and PixWriter Lite are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Obradovic Lab AMES or PixWriter Lite have ads?
Neither Obradovic Lab AMES nor PixWriter Lite shows ads.
Which is updated more often, Obradovic Lab AMES or PixWriter Lite?
Obradovic Lab AMES ships an update every 5 months, and PixWriter Lite every 4 months. Most recently, Obradovic Lab AMES was updated on November 4, 2026 and PixWriter Lite on November 3, 2026.

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