# CoreShift vs Chess Codex

The clearest difference is in-app purchases: Chess Codex at none against CoreShift's 1. Chess Codex also leads on update cadence (every 3 days vs every 3 weeks). CoreShift's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.1). On price and device support there is nothing between them.

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

CoreShift ships an update every 3 weeks, Chess Codex every 3 days. The most recent releases landed on September 25, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | CoreShift | Chess Codex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 32 MB | 36 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jozsef Farkas](https://appshunter.io/developer/1891341454) | [Vince Lubbers](https://appshunter.io/developer/1889839785) |

## What reviewers say

### CoreShift

[App page](https://appshunter.io/ios/app/coreshift-abstract-strategy/id6761764965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoreShift Pro | $3.99 | one-time |


### Chess Codex

[App page](https://appshunter.io/ios/app/chess-codex/id6778615817)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CoreShift free?

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

### Is Chess Codex free?

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

### Do CoreShift or Chess Codex have ads?

Chess Codex shows ads; CoreShift does not.

### Which is updated more often, CoreShift or Chess Codex?

CoreShift ships an update every 3 weeks, and Chess Codex every 3 days. Most recently, CoreShift was updated on September 25, 2026 and Chess Codex on September 11, 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.*