# Sool vs STILLE

Sool and STILLE are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Sool | STILLE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 4 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Umit UZ](https://appshunter.io/developer/1842858860) | [Cem Sezek](https://appshunter.io/developer/1877868879) |

## 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


### STILLE

[App page](https://appshunter.io/ios/app/stille/id6761315933)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sool free?

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

### Is STILLE free?

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

### Do Sool or STILLE have ads?

Neither Sool nor STILLE shows ads.

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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.*