# ProSolo Tree vs Chess.clock

The clearest difference is update cadence: ProSolo Tree at every 3 days against Chess.clock's every 3 months. ProSolo Tree also leads on iOS requirement (17.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

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

ProSolo Tree ships an update every 3 days, Chess.clock every 3 months. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ProSolo Tree | Chess.clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Size | 1 MB | 2 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Buchholz](https://appshunter.io/developer/1692420995) | [Lukas Paul Hering](https://appshunter.io/developer/1788259541) |

## What reviewers say

### ProSolo Tree

[App page](https://appshunter.io/ios/app/prosolo-tree/id6581479987)

**In-app purchases:** none


### Chess.clock

[App page](https://appshunter.io/ios/app/chessclock/id6740070517)

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

**In-app purchases:** none


## Frequently asked questions

### Is ProSolo Tree free?

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

### Is Chess.clock free?

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

### Do ProSolo Tree or Chess.clock have ads?

Neither ProSolo Tree nor Chess.clock shows ads.

### Which is updated more often, ProSolo Tree or Chess.clock?

ProSolo Tree ships an update every 3 days, and Chess.clock every 3 months. Most recently, ProSolo Tree was updated on September 21, 2026 and Chess.clock on September 30, 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.*