# SchoolTool vs Sternenfänger

The clearest difference is price: Sternenfänger at $1.99 against SchoolTool's $7.99. Sternenfänger also leads on iOS requirement (13.0 vs 16.0). SchoolTool's advantage is update cadence (every 2 months vs every 5 months). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

SchoolTool costs $7.99 and Sternenfänger $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SchoolTool ships an update every 2 months, Sternenfänger every 5 months. The most recent releases landed on November 13, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | SchoolTool | Sternenfänger |
| --- | --- | --- |
| Price | $7.99 | **$1.99** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/schooltool/id1204863582/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **66.7% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | Paid |
| Size | 5 MB | 67 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Kroeger](https://appshunter.io/developer/517655669) | [Christian Urff](https://appshunter.io/developer/415894463) |

## What reviewers say

### SchoolTool

[App page](https://appshunter.io/ios/app/schooltool/id1204863582)

This app helps create a quiet learning environment with a visual noise warning light and a timer. It provides optical and acoustic feedback on volume levels and helps students grasp remaining work time.

**Highlights:** Noise warning light with optical and acoustic feedback, Adjustable sensitivity for different groups, Configurable warnings for noise limit breaches, Visual timer for work phases, Develops a sense of time in students, Timer can be relative or absolute

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

**In-app purchases:** none


### Sternenfänger

[App page](https://appshunter.io/ios/app/sternenfanger/id1567815191)

This app transforms math learning into an exciting space adventure for children. It features eight interactive games designed to improve quantity recognition skills through engaging activities like capturing star groups and matching numbers. The app helps children develop efficient strategies for understanding mathematical concepts.

**Highlights:** Eight interactive math games, Improves quantity recognition, Develops pattern recognition strategies, Collect points, space images, and badges, Adaptable difficulty levels, Supports teachers and parents

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SchoolTool free?

SchoolTool costs $7.99, with no in-app purchases.

### Is Sternenfänger free?

Sternenfänger costs $1.99, with no in-app purchases.

### Do SchoolTool or Sternenfänger have ads?

Neither SchoolTool nor Sternenfänger shows ads.

### Which is updated more often, SchoolTool or Sternenfänger?

SchoolTool ships an update every 2 months, and Sternenfänger every 5 months. Most recently, SchoolTool was updated on November 13, 2026 and Sternenfänger on November 11, 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.*