# K.O. Slitherlink vs Equation =

The clearest difference is iOS requirement: Equation = at 13.0 against K.O. Slitherlink's 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.

K.O. Slitherlink ships an update every 4 months, Equation = every 5 months. The most recent releases landed on September 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | K.O. Slitherlink | Equation = |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Ad-supported | — |
| Size | 35 MB | 91 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [又瑞 韦](https://appshunter.io/developer/1625836878) | [Beijing Ningdom Technology Co., Ltd.](https://appshunter.io/developer/434217018) |

## What reviewers say

### 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


### Equation =

[App page](https://appshunter.io/ios/app/equation/id6737338940)

**In-app purchases:** none


## Frequently asked questions

### Is K.O. Slitherlink free?

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

### Is Equation = free?

Equation = is free to download, with no in-app purchases.

### Do K.O. Slitherlink or Equation = have ads?

Both K.O. Slitherlink and Equation = show ads.

### Which is updated more often, K.O. Slitherlink or Equation =?

K.O. Slitherlink ships an update every 4 months, and Equation = every 5 months. Most recently, K.O. Slitherlink was updated on September 19, 2026 and Equation = on October 6, 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.*