# Tree Identification vs Fluid Mechanics Practice

The clearest difference is price: Tree Identification at Free against Fluid Mechanics Practice's $0.49. Fluid Mechanics Practice's advantage is in-app purchases (none vs 2) and update cadence (every 6 days vs every 6 weeks). On ads and device support there is nothing between them.

Tree Identification is free to download; Fluid Mechanics Practice costs $0.49 up front. Tree Identification sells 2 in-app purchases, starting at $5.99 per 7 days. Fluid Mechanics Practice asks for nothing beyond the download.

Tree Identification ships an update every 6 weeks, Fluid Mechanics Practice every 6 days. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Tree Identification | Fluid Mechanics Practice |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tree-identification-my-treeid/id6754916743/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | Subscription | — |
| Size | 9 MB | 24 MB |
| Requires iOS | 18.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Kaan Yildiz](https://appshunter.io/developer/1473960483) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### Tree Identification

[App page](https://appshunter.io/ios/app/tree-identification-my-treeid/id6754916743)

Instantly identify trees with AI by snapping a photo. Track your discoveries, learn about species, and monitor tree health. Features include a field journal, seasonal reminders, and a discovery map.

**Highlights:** Instant AI tree identification, Detailed species profiles, Personalized field journal, Tree health and disease detection, Seasonal care reminders, Interactive discovery map

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TreeID Weekly | $5.99 | per 7 days |
| TreeID Lifetime | $29.99 | one-time |


### Fluid Mechanics Practice

[App page](https://appshunter.io/ios/app/fluid-mechanics-practice/id6757950639)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tree Identification free?

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

### Is Fluid Mechanics Practice free?

Fluid Mechanics Practice costs $0.49, with no in-app purchases.

### Do Tree Identification or Fluid Mechanics Practice have ads?

Neither Tree Identification nor Fluid Mechanics Practice shows ads.

### Which is updated more often, Tree Identification or Fluid Mechanics Practice?

Tree Identification ships an update every 6 weeks, and Fluid Mechanics Practice every 6 days. Most recently, Tree Identification was updated on October 24, 2026 and Fluid Mechanics Practice on October 20, 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.*