# Lehrer Lämpel: Subtraction — Step by step solutions

> Step by step solutions (iPhone/iPad app by Claus Zinn.)

- Source: https://appshunter.io/ios/app/lehrer-lampel-subtraction/id890390632 (this page in markdown: same URL + `.md`)
- Developer: [Claus Zinn](https://appshunter.io/developer/889016868)
- Category: Education
- Price: $1.99
- Age rating: 4+
- Requires: iOS 12.0 · 6 MB
- Languages: American English, French (France), German (Germany), European Spanish
- Released: 2014-08-12
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/lehrer-lampel-subtraction/id890390632/reviews.md

## What is Lehrer Lämpel?

This educational app supports primary school children (usually from 3rd grade) to practise their multi-column subtraction skills.

The two main subtraction methods, namely, the Equal Additions Method (aka the Austrian Method), and the Decomposition Method are supported.
     
Easy drag & drop of numbers to the blackboard.

Immediate feedback option where incorrect steps are immediately marked red and where correct steps are immediately marked green.

Pupils can ask Lehrer Lämpel for help at any time. Help first removes an erroneously learner step; if there are no errors, a single step is performed towards the solution.

All teacher steps towards the solution are followed-up with a step explanation as well.

Various degrees of difficulty guided by the number of digits the two numbers can have, and whether borrowing operations are required.

Supports self-defined subtraction tasks and there is a work-sheet, and randomised exercises.

Supports English, French, Spanish and German.

Available on the iPad, for iOS12 or later. 

The app is ad-free. No data is being collected. Please consider leaving a review. This helps a lot. Thanks!


## Version history (last 5 releases)

### 1.8 — 2024-02-27

Added localisation for Spanish. Now supports iOS 12 and later versions. Minor UI improvements.

### 1.7 — 2020-01-21

- The worksheet now keeps track of the number of help requests the user issued to solve a task.
- Minor design improvements.

### 1.6 — 2019-11-27

- Nicer worksheets
- Improved positioning of digits
- Adaptation for Dark Mode (iOS-13)

### 1.5 — 2019-11-12

- Added worksheets tailored to difficulty level (number of digits)
- Minor design changes

### 1.4 — 2019-09-25

Improved drag & drop of digits onto the blackboard.
Added variation in natural language generation.
Minor design improvements.

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## More apps by Claus Zinn

- [Lehrer Lämpel: Number Pyramids](https://appshunter.io/ios/app/lehrer-lampel-number-pyramids/id889016865)
- [Lehrer Lämpel: Addition](https://appshunter.io/ios/app/lehrer-lampel-addition/id920522698)
- [Lehrer Lämpel: Fractions](https://appshunter.io/ios/app/lehrer-lampel-fractions/id932955952)
- [Lehrer Lämpel: Digit Squares](https://appshunter.io/ios/app/lehrer-lampel-digit-squares/id948600535)
- [Lehrer Lämpel: Number Wheels](https://appshunter.io/ios/app/lehrer-lampel-number-wheels/id959272416)

All apps by Claus Zinn: https://appshunter.io/developer/889016868

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-16.*