# Sool vs LinkState

The clearest difference is in-app purchases: Sool at none against LinkState's 1. Sool also leads on ads (none vs shown). LinkState's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. LinkState sells 1 one-off in-app purchase. Sool asks for nothing beyond the download.

Sool ships an update every 2 months, LinkState every 6 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Sool | LinkState |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 4 MB | 30 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Umit UZ](https://appshunter.io/developer/1842858860) | [Hasan Enes DIRIK](https://appshunter.io/developer/1802764921) |

## What reviewers say

### Sool

[App page](https://appshunter.io/ios/app/sool-quick-mathematic-trainer/id6756207263)

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

**In-app purchases:** none


### LinkState

[App page](https://appshunter.io/ios/app/linkstate-color-ball-sort/id6757500175)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Sool free?

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

### Is LinkState free?

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

### Do Sool or LinkState have ads?

LinkState shows ads; Sool does not.

### Which is updated more often, Sool or LinkState?

Sool ships an update every 2 months, and LinkState every 6 weeks. Most recently, Sool was updated on October 24, 2026 and LinkState on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*