# Index Sums vs Math Crossword Path Brain Test

The clearest difference is ads: Index Sums at none against Math Crossword Path Brain Test's shown. Math Crossword Path Brain Test's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (15.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Index Sums ships an update every 3 weeks, Math Crossword Path Brain Test every 4 days. The most recent releases landed on October 9, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Index Sums | Math Crossword Path Brain Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/index-sums/id6745894447/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 25 MB | 201 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [ZORIX LLC](https://appshunter.io/developer/1814371874) | [Chengdu Infinite Seek Technology Co., Ltd](https://appshunter.io/developer/1835571102) |

## What reviewers say

### Index Sums

[App page](https://appshunter.io/ios/app/index-sums/id6745894447)

Engage your mind with a Japanese number logic puzzle. Fill grids based on row and column sums, using pure logic to reveal hidden patterns. Offers multiple difficulty levels and daily challenges for continuous mental stimulation.

**Highlights:** Row and column sum logic puzzles, Multiple difficulty levels, Daily challenges, Progress tracking and statistics, Offline play, Customizable themes, Haptic feedback

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Crossword Path Brain Test

[App page](https://appshunter.io/ios/app/math-crossword-path-brain-test/id6755596521)

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

**In-app purchases:** none


## Frequently asked questions

### Is Index Sums free?

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

### Is Math Crossword Path Brain Test free?

Math Crossword Path Brain Test is free to download, with no in-app purchases.

### Do Index Sums or Math Crossword Path Brain Test have ads?

Math Crossword Path Brain Test shows ads; Index Sums does not.

### Which is updated more often, Index Sums or Math Crossword Path Brain Test?

Index Sums ships an update every 3 weeks, and Math Crossword Path Brain Test every 4 days. Most recently, Index Sums was updated on October 9, 2026 and Math Crossword Path Brain Test on September 8, 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.*