# TreeSnap vs PA AIS Field Guide

The clearest difference is rating: PA AIS Field Guide at 5.0 against TreeSnap's 4.6. PA AIS Field Guide also leads on iOS requirement (12.0 vs 15.1). TreeSnap's advantage is update cadence (monthly vs every 5 months) and ratings volume (19 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

PA AIS Field Guide holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: TreeSnap has 19 ratings behind it against 3, so its average is the more settled of the two.

TreeSnap ships an update monthly, PA AIS Field Guide every 5 months. The most recent releases landed on November 11, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | TreeSnap | PA AIS Field Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (19 ratings)](https://appshunter.io/ios/app/treesnap/id1226499160/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pa-ais-field-guide/id1448504422/reviews)** |
| Number of ratings | **19** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free | Free |
| Size | 135 MB | 27 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of Tennessee](https://appshunter.io/developer/390185553) | [Skyward App Company](https://appshunter.io/developer/821096887) |

## What reviewers say

### TreeSnap

[App page](https://appshunter.io/ios/app/treesnap/id1226499160)

Contribute to vital forest research by identifying and tagging healthy trees. Your submissions help scientists study genetic diversity and develop better tree breeding programs to combat invasive diseases and pests.

**Highlights:** Identify and tag trees, Contribute to scientific research, Help combat tree diseases, Study genetic diversity, Support tree breeding programs

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

**In-app purchases:** none


### PA AIS Field Guide

[App page](https://appshunter.io/ios/app/pa-ais-field-guide/id1448504422)

Identify, report, and catalog non-native aquatic animal and plant species in Pennsylvania. This educational tool helps users contribute to conservation efforts by documenting invasive species.

**Highlights:** Identify aquatic invasive species, Report sightings, Catalog species, Educational resource, Contribute to conservation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TreeSnap free?

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

### Is PA AIS Field Guide free?

PA AIS Field Guide is free to download, with no in-app purchases.

### Which has better reviews, TreeSnap or PA AIS Field Guide?

PA AIS Field Guide is rated higher. TreeSnap averages 4.6 out of 5 from 19 ratings, while PA AIS Field Guide averages 5.0 from 3 ratings.

### Do TreeSnap or PA AIS Field Guide have ads?

Neither TreeSnap nor PA AIS Field Guide shows ads.

### Which is updated more often, TreeSnap or PA AIS Field Guide?

TreeSnap ships an update monthly, and PA AIS Field Guide every 5 months. Most recently, TreeSnap was updated on November 11, 2026 and PA AIS Field Guide on November 2, 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.*