# 2-1 Lite

> 2-1 Lite (iPhone/iPad app by Matthias Vanselow.)

- Source: https://appshunter.io/ios/app/2-1-lite/id934877467 (this page in markdown: same URL + `.md`)
- Developer: [Matthias Vanselow](https://appshunter.io/developer/537049278)
- Category: Education, Games, Family
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 6.0 · 40 MB
- Languages: English
- Released: 2015-02-13
- Data updated: 2026-08-04
- User reviews in markdown: https://appshunter.io/ios/app/2-1-lite/id934877467/reviews.md

## What is 2?

2-1 helps to teach children how to subtract numbers from 1 to 10. The app doesn’t use any words, so the app can be used for children in any language.
The app is tested by teachers, what you can find below in references.

The app is split in nine levels. In every level there are six equations, which the child has to solve.
The app contains all possible subtraction equations with the numbers from 1 to 10.
Our apps are based on a modification of the Leitner system:
http://en.wikipedia.org/wiki/Flashcard
That means, the questions are repeated until the child gives the right answer. Thus, the answers will be incorporated into the memory. So it creates a real learning effect.
If the child answered all correctly, then the level is finished. And the next level will be open only if the scores are enough.
To earn the third star, the child has to play the level again, this time even without the help of the animals.
In the last level there 19 randomly selected equations of all equations are asked again.
The player could play the last level again and again for good exercises.

The game is finished, when the child has received all the three stars for each level. 
You can reset the scores, so that the child can repeat the lessons at a later occasion,
or another child could do the exercises.
Please notice, that our apps are real educational apps, made​​, among others, for the classroom and homework. 
In our apps the education is more important than fun. Our apps create a real learning effect. 
Our apps are more like doing homework instead of playing a game. So it can be some work for children to finish our apps. 
It might be helpful if the parents or teachers support the child's motivation. 
Therefore the reward of the work is that the child will master all subtraction tasks up to 10 in the future without problems.


Recommended for ages 5 - 8

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| unlock full version | $0.99 | one-time |



## Version history (last 3 releases)

### 1.0.4 — 2015-04-03

This app has been updated by Apple to display the Apple Watch app icon.

optimized for iPhone 5 and iPhone 6

### 1.0.2 — 2015-03-10

better memory management so that app can run also on smaller devices

### 1.0.1 — 2015-02-12

No release notes.

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## More apps by Matthias Vanselow

- [1+1](https://appshunter.io/ios/app/1-plus-1/id537049275)
- [1+1 Lite](https://appshunter.io/ios/app/1-plus-1-lite/id549012711)
- [1+1 Dice lite](https://appshunter.io/ios/app/1-plus-1-dice-lite/id634878950)
- [1x1. Lite](https://appshunter.io/ios/app/1x1-lite/id861432058)
- [1x1.. Lite](https://appshunter.io/ios/app/1x1-lite/id861453669)

All apps by Matthias Vanselow: https://appshunter.io/developer/537049278

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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 2026-08-04.*