# Untis Mobile vs Blitzrechnen

The clearest difference is in-app purchases: Untis Mobile at none against Blitzrechnen's 4. Untis Mobile also leads on review sentiment (50% vs 19%) and update cadence (every 2 weeks vs every 3 months). Blitzrechnen's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Blitzrechnen sells 4 one-off in-app purchases. Untis Mobile asks for nothing beyond the download.

Untis Mobile ships an update every 2 weeks, Blitzrechnen every 3 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Untis Mobile | Blitzrechnen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.7K ratings)](https://appshunter.io/ios/app/untis-mobile/id926186904/reviews)** | — |
| Number of ratings | **1.7K** | — |
| Positive reviews | **50.3% of reviews** | 18.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 54 MB | 196 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Untis GmbH](https://appshunter.io/developer/1112298871) | [Ernst Klett Verlag GmbH, Stuttgart](https://appshunter.io/developer/751540887) |

## What reviewers say

### Untis Mobile

[App page](https://appshunter.io/ios/app/untis-mobile/id926186904)

Access your school schedule, substitution plans, and class registers on the go. Communicate with teachers, guardians, and students through messages and receive important notifications. Manage attendance, sick notes, and exam details.

**Highlights:** Individual timetable (offline access), Daily updated substitution plan, Digital class register (attendance, sick notes), Lesson cancellations and room changes, Exam dates and homework tracking, Secure messaging between school members, Push notifications for new messages

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app for school
- 👍 Helpful for staying on top of homework and schedule
- 👍 Provides good overview of classes and timetable
- 👍 Useful for seeing if a teacher is absent

**What reviewers complain about**

- 🐛 Buggy and unreliable
- 🤔 Desktop and mobile versions have different features
- 🤔 New design is confusing and less user-friendly
- 🐛 Doesn't always show accurate or up-to-date information

**Reported bugs**

- Login issues
- Crashes and freezes
- Incorrect or missing schedule information
- Compatibility problems with newer OS versions

**Requested features**

- Allow students to text classmates
- Add ability to see grades
- Improve homework tracking and notifications
- Provide more customization options


### Blitzrechnen

[App page](https://appshunter.io/ios/app/blitzrechnen/id6444187170)

Practice math skills for grades 1-4 with adaptive exercises. Learn independently through engaging, game-like activities that reinforce concepts and build confidence. Offline access ensures continuous learning at home or in the classroom.

**Highlights:** Adaptive exercises for grades 1-4, Multiple difficulty levels, Self-assessment tests, Progress tracking for parents/teachers, Offline functionality, Engaging animations

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Klasse 1 | $2.99 | one-time |
| Blitzrechnen 4 | $2.99 | one-time |
| Klasse 2 | $2.99 | one-time |
| Klasse 3 | $2.99 | one-time |


## Frequently asked questions

### Is Untis Mobile free?

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

### Is Blitzrechnen free?

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

### Do Untis Mobile or Blitzrechnen have ads?

Neither Untis Mobile nor Blitzrechnen shows ads.

### Which is updated more often, Untis Mobile or Blitzrechnen?

Untis Mobile ships an update every 2 weeks, and Blitzrechnen every 3 months. Most recently, Untis Mobile was updated on September 24, 2026 and Blitzrechnen on September 22, 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.*