# TurtleSAT vs I Spy Koala

The clearest difference is review sentiment: I Spy Koala at 38% against TurtleSAT's 0%. I Spy Koala also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, 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, I Spy Koala every 25 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | TurtleSAT | I Spy Koala |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **37.5% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 22 months** | Every 25 months |
| Monetization | Ad-supported | **Free** |
| Size | 34 MB | 19 MB |
| Requires iOS | 16.4 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [University of Western Sydney](https://appshunter.io/developer/666618434) | [Department of Planning, Industry and Environment](https://appshunter.io/developer/559957680) |

## 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


### I Spy Koala

[App page](https://appshunter.io/ios/app/i-spy-koala/id1474755197)

This app allows users to record and submit koala observation data. The collected information contributes to biodiversity databases and aids in conservation efforts. It's a tool for citizen science to help protect koala populations.

**Highlights:** Record koala observations, Submit survey data, Contribute to biodiversity databases, Aid conservation strategies, View data on interactive maps, Accessible to researchers and public

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TurtleSAT free?

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

### Is I Spy Koala free?

I Spy Koala is free to download, with no in-app purchases.

### Do TurtleSAT or I Spy Koala have ads?

TurtleSAT shows ads; I Spy Koala does not.

### Which is updated more often, TurtleSAT or I Spy Koala?

TurtleSAT ships an update every 22 months, and I Spy Koala every 25 months. Most recently, TurtleSAT was updated on November 2, 2026 and I Spy Koala on November 3, 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.*