# Chess Codex vs Increment

The clearest difference is in-app purchases: Chess Codex at none against Increment's 1. Chess Codex also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

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

Chess Codex ships an update every 3 days, Increment daily. The most recent releases landed on September 30, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Chess Codex | Increment |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/increment-mental-math/id6791279337/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 36 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vince Lubbers](https://appshunter.io/developer/1889839785) | [SSGM LLC](https://appshunter.io/developer/6791279339) |

## What reviewers say

### Chess Codex

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Increment

[App page](https://appshunter.io/ios/app/increment-mental-math/id6791279337)

This arcade-style game challenges your reflexes and speed with arithmetic puzzles. Transform numbers based on instructions before the timer expires. Compete with friends in real-time races or tackle daily challenges.

**Highlights:** Arcade-style arithmetic puzzles, Real-time 1v1 friend races, Daily shared puzzles, Classic mode with streaks and leaderboards, Player profile with avatar and stats, One-handed play design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Chess Codex free?

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

### Is Increment free?

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

### Do Chess Codex or Increment have ads?

Both Chess Codex and Increment show ads.

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

Chess Codex ships an update every 3 days, and Increment daily. Most recently, Chess Codex was updated on September 30, 2026 and Increment on October 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.*