# OneSolve Go vs ChessCoach

The clearest difference is ads: OneSolve Go at none against ChessCoach's shown. ChessCoach's advantage is update cadence (weekly vs fortnightly) and iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. OneSolve Go sells 5 in-app purchases, starting at $4.99 per year and ChessCoach sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OneSolve Go ships an update fortnightly, ChessCoach weekly. Both last shipped on November 10, 2026.

## The numbers

| Metric | OneSolve Go | ChessCoach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onesolve-go/id6798178345/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 21 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Suzhou Vector16 Tech Ltd](https://appshunter.io/developer/1896112927) | [INPHIL CHOI](https://appshunter.io/developer/6785766361) |

## What reviewers say

### OneSolve Go

[App page](https://appshunter.io/ios/app/onesolve-go/id6798178345)

This app provides an offline Go engine and learning tools for players of all levels. It features life-and-death problems, beginner lessons, and game analysis. The app is optimized for Apple devices and offers optional cloud features for enhanced play and review.

**Highlights:** Offline KataGo engine, Life-and-death problems, Beginner lessons, Game analysis and review, Rank assessment, Optimized for Apple Silicon, Cloud play and review (optional)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Member | $4.99 | per year |
| 1,200 AI Analysis Credits | $0.99 | one-time |
| 6,666 AI Analysis Credits | $3.99 | one-time |
| Lifetime Member | $7.99 | one-time |
| 22,990 AI Analysis Credits | $14.99 | one-time |


### ChessCoach

[App page](https://appshunter.io/ios/app/chesscoach-learn-chess/id6807283401)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Course | $2.99 | one-time |


## Frequently asked questions

### Is OneSolve Go free?

OneSolve Go is free to download, with in-app purchases available.

### Is ChessCoach free?

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

### Do OneSolve Go or ChessCoach have ads?

ChessCoach shows ads; OneSolve Go does not.

### Which is updated more often, OneSolve Go or ChessCoach?

OneSolve Go ships an update fortnightly, and ChessCoach weekly. Most recently, OneSolve Go was updated on November 10, 2026 and ChessCoach on November 10, 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.*