# CoolDing vs TreeRings

The clearest difference is price: CoolDing at Free against TreeRings's $0.99. CoolDing also leads on device support (3 vs 1) and iOS requirement (5.1.1 vs 18.4). TreeRings's advantage is update cadence (every 4 months vs every 9 months). On ads and in-app purchases there is nothing between them.

CoolDing is free to download; TreeRings costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CoolDing ships an update every 9 months, TreeRings every 4 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | CoolDing | TreeRings |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[1.3 (4 ratings)](https://appshunter.io/ios/app/treerings/id6751566746/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | — | Paid |
| Size | 39 MB | 1 MB |
| Requires iOS | **5.1.1** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Anna Technology B.V.](https://appshunter.io/developer/427593629) | [Mohamed Abdelsalam](https://appshunter.io/developer/553109131) |

## What reviewers say

### CoolDing

[App page](https://appshunter.io/ios/app/coolding/id912132568)

**Features:** macOS Compatibility

**In-app purchases:** none


### TreeRings

[App page](https://appshunter.io/ios/app/treerings/id6751566746)

Analyze tree cross-sections to estimate age and understand past growing conditions. Discover historical climate patterns by comparing data from multiple trees.

**Highlights:** Estimate tree age by counting growth rings, Analyze yearly growing conditions, Discover historical climate patterns, Simple photo analysis, Insights for hikers and foresters

**In-app purchases:** none


## Frequently asked questions

### Is CoolDing free?

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

### Is TreeRings free?

TreeRings costs $0.99, with no in-app purchases.

### Do CoolDing or TreeRings have ads?

Neither CoolDing nor TreeRings shows ads.

### Which is updated more often, CoolDing or TreeRings?

CoolDing ships an update every 9 months, and TreeRings every 4 months. Most recently, CoolDing was updated on November 1, 2026 and TreeRings on November 8, 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.*