# Chess Knowledge vs MainLine

The clearest difference is in-app purchases: Chess Knowledge at none against MainLine's 2. Chess Knowledge also leads on iOS requirement (12.0 vs 15.1). MainLine's advantage is update cadence (weekly vs monthly). On price and device support there is nothing between them.

Both are free to download. MainLine sells 2 in-app purchases, starting at $7.99 per month. Chess Knowledge asks for nothing beyond the download.

Chess Knowledge ships an update monthly, MainLine weekly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Chess Knowledge | MainLine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/mainline-chess-trainer/id6761091619/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 86 MB | 52 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chess Knowledge FZE](https://appshunter.io/developer/1628767249) | [Benjamin Boucher](https://appshunter.io/developer/1887753878) |

## What reviewers say

### Chess Knowledge

[App page](https://appshunter.io/ios/app/chess-knowledge/id1628767247)

**Features:** macOS Compatibility

**In-app purchases:** none


### MainLine

[App page](https://appshunter.io/ios/app/mainline-chess-trainer/id6761091619)

This app helps improve your chess skills by focusing on pattern recognition. It uses spaced repetition to reinforce tactical motifs and endgame ideas, allowing you to create interactive drills from your own games to remember what matters most.

**Highlights:** Spaced repetition for pattern recall, Interactive drills from own games, Import Chess.com & Lichess games, Tactics, endgame, and puzzle training, Daily reminders and progress tracking, Daily puzzle challenges

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MainLine Pro (Monthly) | $7.99 | per month |
| MainLine Pro (Yearly) | $69.99 | per year |


## Frequently asked questions

### Is Chess Knowledge free?

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

### Is MainLine free?

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

### Which is updated more often, Chess Knowledge or MainLine?

Chess Knowledge ships an update monthly, and MainLine weekly. Most recently, Chess Knowledge was updated on October 27, 2026 and MainLine on October 24, 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.*