# DeltaChess vs ChessImprover

The clearest difference is price: ChessImprover at Free against DeltaChess's $0.99. ChessImprover also leads on in-app purchases (none vs 3). DeltaChess's advantage is update cadence (every 4 days vs every 9 days) and iOS requirement (15.0 vs 17.0). On ads and device support there is nothing between them.

ChessImprover is free to download; DeltaChess costs $0.99 up front. DeltaChess sells 3 one-off in-app purchases. ChessImprover asks for nothing beyond the download.

DeltaChess ships an update every 4 days, ChessImprover every 9 days. The most recent releases landed on September 7, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | DeltaChess | ChessImprover |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/chessimprover/id6784499127/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Monetization | — | Free |
| Size | 156 MB | 116 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sezgin Serin](https://appshunter.io/developer/1793997554) | [MARTIN BERNT ANDERSSON](https://appshunter.io/developer/6784499129) |

## What reviewers say

### DeltaChess

[App page](https://appshunter.io/ios/app/deltachess/id6753863395)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Developer Tip – Small | $0.99 | one-time |
| Developer Tip – Medium | $9.99 | one-time |
| Developer Tip – Large | $99.99 | one-time |


### ChessImprover

[App page](https://appshunter.io/ios/app/chessimprover/id6784499127)

Enhance your chess skills with a comprehensive training app. Play with an AI coach, solve thousands of puzzles, build opening repertoires, and master endgames. All features run offline on your device.

**Highlights:** AI coach with spoken commentary, Adjustable engine strength (500-2900 Elo), Game review with plain English explanations, 23,000 tactical puzzles, Opening repertoire builder, Endgame drills, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is DeltaChess free?

DeltaChess costs $0.99, and also offers in-app purchases.

### Is ChessImprover free?

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

### Do DeltaChess or ChessImprover have ads?

Neither DeltaChess nor ChessImprover shows ads.

### Which is updated more often, DeltaChess or ChessImprover?

DeltaChess ships an update every 4 days, and ChessImprover every 9 days. Most recently, DeltaChess was updated on September 7, 2026 and ChessImprover on September 26, 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.*