# Percent Error Calculator vs Tree Identifier

The clearest difference is in-app purchases: Percent Error Calculator at none against Tree Identifier's 2. Percent Error Calculator also leads on iOS requirement (13.0 vs 17.6). Tree Identifier's advantage is update cadence (daily vs weekly). On price, ads and device support there is nothing between them.

Both are free to download. Tree Identifier sells 2 in-app purchases, starting at $5.99 per 7 days. Percent Error Calculator asks for nothing beyond the download.

Percent Error Calculator ships an update weekly, Tree Identifier daily. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Percent Error Calculator | Tree Identifier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Size | 40 MB | 10 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [STAGE CODING, Travnik](https://appshunter.io/developer/1637068135) | [Kevin Hausen](https://appshunter.io/developer/1794777127) |

## What reviewers say

### Percent Error Calculator

[App page](https://appshunter.io/ios/app/percent-error-calculator/id1619680411)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tree Identifier

[App page](https://appshunter.io/ios/app/tree-identifier-tree-ai/id6747577038)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly $5.99, 3 Days Free | $5.99 | per 7 days |
| Annual $29.99 | $29.99 | per year |


## Frequently asked questions

### Is Percent Error Calculator free?

Percent Error Calculator is free to download, with no in-app purchases.

### Is Tree Identifier free?

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

### Do Percent Error Calculator or Tree Identifier have ads?

Neither Percent Error Calculator nor Tree Identifier shows ads.

### Which is updated more often, Percent Error Calculator or Tree Identifier?

Percent Error Calculator ships an update weekly, and Tree Identifier daily. Most recently, Percent Error Calculator was updated on October 3, 2026 and Tree Identifier on October 4, 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.*