# TurtleSAT vs AMDI Data Collection

The clearest difference is ads: AMDI Data Collection at none against TurtleSAT's shown. AMDI Data Collection also leads on update cadence (every 5 weeks vs every 22 months) and monetization model (free vs ad-supported). On price, review sentiment, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TurtleSAT ships an update every 22 months, AMDI Data Collection every 5 weeks. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | TurtleSAT | AMDI Data Collection |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 22 months | **Every 5 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 34 MB | 87 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [University of Western Sydney](https://appshunter.io/developer/666618434) | [TANGAROA BLUE FOUNDATION LTD](https://appshunter.io/developer/1408112210) |

## What reviewers say

### TurtleSAT

[App page](https://appshunter.io/ios/app/turtlesat-mapping-tool/id1238032751)

This app allows communities to map the locations of freshwater turtles and their nests in waterways and wetlands. Your sightings help land managers track turtle movements and behavior to protect these declining populations.

**Highlights:** Map freshwater turtle sightings, Record turtle nest locations, Contribute to conservation efforts, Track turtle movement and behavior, User registration and login, Geolocation services for accurate mapping

**In-app purchases:** none


### AMDI Data Collection

[App page](https://appshunter.io/ios/app/amdi-data-collection/id1408112211)

This application allows citizen scientists and organizations to record and submit data on marine debris found during clean-up events. It uses a standardized methodology to contribute to a national database, providing insights into the types and amounts of litter impacting Australian coastlines.

**Highlights:** Data collection for marine debris, Standardized methodology, National database contribution, Analysis of debris types and amounts, Supports clean-up event organizers

**In-app purchases:** none


## Frequently asked questions

### Is TurtleSAT free?

TurtleSAT is free to download, with no in-app purchases.

### Is AMDI Data Collection free?

AMDI Data Collection is free to download, with no in-app purchases.

### Do TurtleSAT or AMDI Data Collection have ads?

TurtleSAT shows ads; AMDI Data Collection does not.

### Which is updated more often, TurtleSAT or AMDI Data Collection?

TurtleSAT ships an update every 22 months, and AMDI Data Collection every 5 weeks. Most recently, TurtleSAT was updated on September 21, 2026 and AMDI Data Collection on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*