# 7Sec Chess vs ChessBased

The clearest difference is in-app purchases: 7Sec Chess at none against ChessBased's 1. 7Sec Chess also leads on iOS requirement (15.0 vs 17.0). ChessBased's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. ChessBased sells 1 one-off in-app purchase. 7Sec Chess asks for nothing beyond the download.

7Sec Chess ships an update weekly, ChessBased every 2 weeks. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 7Sec Chess | ChessBased |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/chessbased-stockfish-19/id6773557320/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 120 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Salih Eksioglu](https://appshunter.io/developer/1633491617) | [ENVISIONAIRY LLC](https://appshunter.io/developer/1605281065) |

## What reviewers say

### 7Sec Chess

[App page](https://appshunter.io/ios/app/7sec-chess/id6754979752)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChessBased

[App page](https://appshunter.io/ios/app/chessbased-stockfish-19/id6773557320)

Analyze chess openings with millions of games and advanced engine evaluations. Prepare like a grandmaster with a seamless interface, win-loss statistics, and move-by-move exploration. Save your favorite lines for later study on your iPhone or iPad.

**Highlights:** Millions of games database, Stockfish 18 engine evaluations, Win-loss statistics, Move-by-move exploration, Save favorite lines, Seamless UI

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChessBased: Stockfish 18 | $4.99 | one-time |


## Frequently asked questions

### Is 7Sec Chess free?

7Sec Chess is free to download, with no in-app purchases.

### Is ChessBased free?

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

### Do 7Sec Chess or ChessBased have ads?

7Sec Chess shows ads; ChessBased does not.

### Which is updated more often, 7Sec Chess or ChessBased?

7Sec Chess ships an update weekly, and ChessBased every 2 weeks. Most recently, 7Sec Chess was updated on October 15, 2026 and ChessBased on October 12, 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.*