# Serendipity Chess vs Chess Pro Trainer™

The clearest difference is in-app purchases: Serendipity Chess at none against Chess Pro Trainer™'s 5. Chess Pro Trainer™'s advantage is update cadence (every 3 days vs every 3 weeks) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Chess Pro Trainer™ sells 5 in-app purchases, starting at $2.99 per month. Serendipity Chess asks for nothing beyond the download.

Serendipity Chess ships an update every 3 weeks, Chess Pro Trainer™ every 3 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Serendipity Chess | Chess Pro Trainer™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (15 ratings)](https://appshunter.io/ios/app/chess-pro-trainer/id6774275331/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 67 MB | 474 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mingo Lam](https://appshunter.io/developer/1808874025) | [Chess With Coach Mark, LLC.](https://appshunter.io/developer/6774275333) |

## What reviewers say

### Serendipity Chess

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

**In-app purchases:** none


### Chess Pro Trainer™

[App page](https://appshunter.io/ios/app/chess-pro-trainer/id6774275331)

This app enhances tactical vision and calculation in chess through realistic in-game simulations. It teaches players when and how to spot tactical opportunities, unlike traditional puzzle apps. Features include an advanced move evaluation system and various training modules for different aspects of tactical play.

**Highlights:** Realistic in-game tactical simulation, Advanced Alternate Acceptable Move system, Tactics Recognition Training, Genius Training for aggressive play, Checks and Coordinated Squares Training, Unprotected Pieces Training, Stockfish-powered Analysis Board

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Annual | $29.99 | per year |
| Pro Lifetime1 | $99.99 | one-time |
| Pro Lifetime 2 Licenses | $149.99 | one-time |
| Pro Lifetime4 | $199.99 | one-time |


## Frequently asked questions

### Is Serendipity Chess free?

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

### Is Chess Pro Trainer™ free?

Chess Pro Trainer™ is free to download, with in-app purchases available.

### Do Serendipity Chess or Chess Pro Trainer™ have ads?

Neither Serendipity Chess nor Chess Pro Trainer™ shows ads.

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

Serendipity Chess ships an update every 3 weeks, and Chess Pro Trainer™ every 3 days. Most recently, Serendipity Chess was updated on October 25, 2026 and Chess Pro Trainer™ on October 31, 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.*