# TurtleSAT vs EMMETT Technique

The clearest difference is update cadence: EMMETT Technique at every 9 months against TurtleSAT's every 22 months. TurtleSAT's advantage is device support. On price, in-app purchases 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.

TurtleSAT ships an update every 22 months, EMMETT Technique every 9 months. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | TurtleSAT | EMMETT Technique |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | — |
| Update frequency | Every 22 months | **Every 9 months** |
| Monetization | Ad-supported | — |
| Size | 34 MB | 20 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 17+ |
| Developer | [University of Western Sydney](https://appshunter.io/developer/666618434) | [The Trustee for THE EMMETT FAMILY TRUST](https://appshunter.io/developer/1756916967) |

## 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

**Features:** Vision Pro support

**In-app purchases:** none


### EMMETT Technique

[App page](https://appshunter.io/ios/app/emmett-technique/id6535685892)

**In-app purchases:** none


## Frequently asked questions

### Is TurtleSAT free?

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

### Is EMMETT Technique free?

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

### Which is updated more often, TurtleSAT or EMMETT Technique?

TurtleSAT ships an update every 22 months, and EMMETT Technique every 9 months. Most recently, TurtleSAT was updated on October 8, 2026 and EMMETT Technique on October 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.*