# SSTUWA vs TurtleSAT

The clearest difference is ads: SSTUWA at none against TurtleSAT's shown. SSTUWA also leads on update cadence (every 2 days vs every 22 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

SSTUWA ships an update every 2 days, TurtleSAT every 22 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SSTUWA | TurtleSAT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 22 months |
| Monetization | — | Ad-supported |
| Size | 169 MB | 34 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Union Systems Pty Ltd](https://appshunter.io/developer/571562885) | [University of Western Sydney](https://appshunter.io/developer/666618434) |

## What reviewers say

### SSTUWA

[App page](https://appshunter.io/ios/app/sstuwa/id1114227610)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SSTUWA free?

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

### Is TurtleSAT free?

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

### Do SSTUWA or TurtleSAT have ads?

TurtleSAT shows ads; SSTUWA does not.

### Which is updated more often, SSTUWA or TurtleSAT?

SSTUWA ships an update every 2 days, and TurtleSAT every 22 months. Most recently, SSTUWA was updated on October 13, 2026 and TurtleSAT on October 8, 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.*