# Chess 3D Pro Trainer vs Serendipity Chess

The clearest difference is ads: Serendipity Chess at none against Chess 3D Pro Trainer's shown. Chess 3D Pro Trainer's advantage is update cadence (every 5 days vs every 3 weeks) and iOS requirement (13.0 vs 18.0). On price, 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.

Chess 3D Pro Trainer ships an update every 5 days, Serendipity Chess every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Chess 3D Pro Trainer | Serendipity Chess |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 43 MB | 67 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [famobi](https://appshunter.io/developer/933760663) | [Mingo Lam](https://appshunter.io/developer/1808874025) |

## What reviewers say

### Chess 3D Pro Trainer

[App page](https://appshunter.io/ios/app/chess-3d-pro-trainer/id6740913562)

**Features:** macOS Compatibility

**In-app purchases:** none


### Serendipity Chess

[App page](https://appshunter.io/ios/app/serendipity-chess/id6744680166)

**In-app purchases:** none


## Frequently asked questions

### Is Chess 3D Pro Trainer free?

Chess 3D Pro Trainer is free to download, with no in-app purchases.

### Is Serendipity Chess free?

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

### Do Chess 3D Pro Trainer or Serendipity Chess have ads?

Chess 3D Pro Trainer shows ads; Serendipity Chess does not.

### Which is updated more often, Chess 3D Pro Trainer or Serendipity Chess?

Chess 3D Pro Trainer ships an update every 5 days, and Serendipity Chess every 3 weeks. Most recently, Chess 3D Pro Trainer was updated on October 25, 2026 and Serendipity Chess on October 25, 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.*