# Osolo vs Heatmap Chess

The clearest difference is in-app purchases: Osolo at none against Heatmap Chess's 1. Osolo also leads on ads (none vs shown) and update cadence (every 5 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Heatmap Chess sells 1 one-off in-app purchase. Osolo asks for nothing beyond the download.

Osolo ships an update every 5 days, Heatmap Chess every 2 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Osolo | Heatmap Chess |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 133 MB | 19 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nukenin LLC](https://appshunter.io/developer/406104492) | [Utku Kucu](https://appshunter.io/developer/1896253523) |

## What reviewers say

### Osolo

[App page](https://appshunter.io/ios/app/osolo/id1474387500)

**In-app purchases:** none


### Heatmap Chess

[App page](https://appshunter.io/ios/app/heatmap-chess/id6766252248)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $4.99 | one-time |


## Frequently asked questions

### Is Osolo free?

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

### Is Heatmap Chess free?

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

### Do Osolo or Heatmap Chess have ads?

Heatmap Chess shows ads; Osolo does not.

### Which is updated more often, Osolo or Heatmap Chess?

Osolo ships an update every 5 days, and Heatmap Chess every 2 months. Most recently, Osolo was updated on October 7, 2026 and Heatmap Chess on October 13, 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.*