# Lehrer Lämpel: Addition — Step by step solutions

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

- Source: https://appshunter.io/ios/app/lehrer-lampel-addition/id920522698 (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 9.3 · 8 MB
- Languages: American English, French (France), German (Germany), Italian
- Released: 2014-10-05
- Data updated: 2026-06-10
- User reviews in markdown: https://appshunter.io/ios/app/lehrer-lampel-addition/id920522698/reviews.md

## What is Lehrer Lämpel?

Lehrer Lämpel is an educational app that supports primary school children (usually 3rd grade) to practise their multi-column addition skills.

The standard addition method, where columns are processed from right to left, is supported.
     
Steps are performed by easy drag & drop of numbers to the blackboard.

The app offers an 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 carrying operations are required.

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

Supports English, French and German.

Available on the iPad, for iOS9 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)

### 1.6 — 2025-02-19

Support for Italian. Improved drag&drop.

### 1.5 — 2020-01-21

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

### 1.4 — 2019-11-25

- Improved positioning of carry
- Added more exercises, now with worksheets ordered by number of digits
- Improved worksheet design
- Improved feedback (more variation)
- Supported dark mode (iOS 13) wrt. configuration page

### 1.3 — 2019-09-20

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

### 1.2 — 2017-02-24

The swish and fanfare sound are no longer played as system sounds, that is, they can now be switched off or their volume turned down.
Improved help menu.
Minor app icon redesign.

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| [Quizztop - Calcul](https://appshunter.io/ios/app/quizztop-calcul/id1501171122) | — | Free | Education |
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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: Subtraction](https://appshunter.io/ios/app/lehrer-lampel-subtraction/id890390632)
- [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 2026-06-10.*