# Tree Risk Assessment vs Arbster

The clearest difference is in-app purchases: Tree Risk Assessment at none against Arbster's 3. Arbster's advantage is iOS requirement (11.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Arbster sells 3 in-app purchases, starting at $29.99 per month. Tree Risk Assessment asks for nothing beyond the download.

Tree Risk Assessment ships an update every 4 months, Arbster every 2 months. The most recent releases landed on September 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Tree Risk Assessment | Arbster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tree-risk-assessment-level-1/id917769134/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 124 MB | 76 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Texas A&M Forest Service](https://appshunter.io/developer/775890018) | [Nordic Social Media AB](https://appshunter.io/developer/1591472020) |

## What reviewers say

### Tree Risk Assessment

[App page](https://appshunter.io/ios/app/tree-risk-assessment-level-1/id917769134)

This app facilitates visual tree assessments, mapping trees with significant defects and identifying necessary treatments. It's ideal for use before and after storms, allowing users to store assessments locally, export them via email, or generate reports.

**Highlights:** Visual tree assessment, Map trees with defects, Identify treatment needs, Pre- and post-storm use, Local assessment storage, Email export, Report generation

**In-app purchases:** none


### Arbster

[App page](https://appshunter.io/ios/app/arbster/id6444389344)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Arbster Premium | $29.99 | per month |
| Arbster Premium | $72.00 | per 3 months |
| Arbster Premium | $214.99 | per year |


## Frequently asked questions

### Is Tree Risk Assessment free?

Tree Risk Assessment is free to download, with no in-app purchases.

### Is Arbster free?

Arbster is free to download, with in-app purchases available.

### Do Tree Risk Assessment or Arbster have ads?

Neither Tree Risk Assessment nor Arbster shows ads.

### Which is updated more often, Tree Risk Assessment or Arbster?

Tree Risk Assessment ships an update every 4 months, and Arbster every 2 months. Most recently, Tree Risk Assessment was updated on September 30, 2026 and Arbster on October 25, 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.*