# One Minute Brain Builder vs K.O. Slitherlink

The clearest difference is review sentiment: K.O. Slitherlink at 100% against One Minute Brain Builder's 83%. One Minute Brain Builder's advantage is iOS requirement (11.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

One Minute Brain Builder ships an update every 3 months, K.O. Slitherlink every 4 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | One Minute Brain Builder | K.O. Slitherlink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/one-minute-brain-builder/id1463055531/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 88 MB | 35 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [登理 郝](https://appshunter.io/developer/910536182) | [又瑞 韦](https://appshunter.io/developer/1625836878) |

## What reviewers say

### One Minute Brain Builder

[App page](https://appshunter.io/ios/app/one-minute-brain-builder/id1463055531)

Engage in a variety of brain-training exercises designed to improve logic, memory, speed, and concentration. With 16 different game types and all levels accessible for free, it offers a fun and relaxing way to keep your mind sharp. Play offline anytime, anywhere.

**Highlights:** 32 logic, memory, speed, visual, concentration, reaction, and math tests, 16 kinds of games, All levels are open and free, Easy and fun gameplay for all ages, Offline play available, Simple game rules

**Features:** macOS Compatibility

**In-app purchases:** none


### K.O. Slitherlink

[App page](https://appshunter.io/ios/app/ko-slitherlink/id1629925581)

This game offers a collection of Slitherlink puzzles with grid sizes from 2x2 to 10x10. Solve logic puzzles by connecting points to form a single loop, following number clues around the grid.

**Highlights:** Supports 2x2 to 10x10 grids, Abundant puzzle store, Slitherlink logic rules, Single continuous loop formation, Number clue system

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

**In-app purchases:** none


## Frequently asked questions

### Is One Minute Brain Builder free?

One Minute Brain Builder is free to download, with no in-app purchases.

### Is K.O. Slitherlink free?

K.O. Slitherlink is free to download, with no in-app purchases.

### Do One Minute Brain Builder or K.O. Slitherlink have ads?

Both One Minute Brain Builder and K.O. Slitherlink show ads.

### Which is updated more often, One Minute Brain Builder or K.O. Slitherlink?

One Minute Brain Builder ships an update every 3 months, and K.O. Slitherlink every 4 months. Most recently, One Minute Brain Builder was updated on October 12, 2026 and K.O. Slitherlink on October 7, 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.*