Add and subtract within 20 vs Rechentrainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Add and subtract within 20
This app transforms math practice into an exciting adventure for children. It uses interactive mini-games and handwriting recognition to make learning addition and subtraction within 20 fun and effective. The difficulty adapts to your child's progress for a personalized experience.
- Interactive mini-games
- Handwriting recognition
- Adaptive difficulty
- Targeted addition/subtraction practice
- Natural learning input
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Transform Math Practice into an Exciting Adventure! Are you looking for an engaging way to help your child master addition and subtraction within 20? Our app combines education with entertainment, offering a unique experience that makes learning math both fun and effective. Key Features: Interactive Mini-Games: Children can enjoy a variety of simple yet captivating mini-games that make math practice enjoyable. Handwriting Recognition: Leveraging advanced handwritten digit recognition technology, the app allows children to write their answers naturally, enhancing both their math skills and handwriting. Adaptive Difficulty: The app adjusts the level of difficulty based on your child's progress, ensuring a personalized learning experience that keeps them challenged yet motivated. Why Choose Our App? Natural Learning Experience: By allowing handwriting input, children can focus on solving problems without the distractions of multiple-choice questions or keyboard input, promoting better concentration and learning outcomes. Skill Enhancement: Designed specifically to improve addition and subtraction skills with numbers up to 20, our app provides targeted practice to build a strong mathematical foundation. Engaging Content: The fun mini-games and adaptive challenges keep children engaged, making them more likely to practice regularly and develop a love for math.
Rechentrainer
This app offers personalized math practice for all ages, covering addition, subtraction, multiplication, and division. It features customizable difficulty levels, motivational rewards, and progress tracking to make learning enjoyable and effective.
- Personalized arithmetic practice
- Customizable difficulty levels
- Motivational reward system
- Learning progress tracking
- Suitable for all ages
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Math Trainer: Master Mathematics with Fun! - Personalized Learning: Practice all four basic arithmetic operations (addition, subtraction, multiplication, division) at your own pace. - Customizable Difficulty Levels: Choose numbers before and after the operator for tailored exercises – perfect for every age and skill level. - Motivation through Rewards: Earn smiley points for every correct answer and boost your learning motivation. - Track Learning Progress: Keep an eye on your progress, strengths, and areas for improvement with the learning history overview. - For Young and Old: Whether a student or adult, the Math Trainer is intended for anyone who wants to improve their math skills. - Learn through Play: Turn learning into an exciting game and master mathematics with fun and joy. Discover now how learning math can be fun – with the Math Trainer!
Screenshots
Verdict
The clearest difference is review sentiment: Rechentrainer at 100% against Add and subtract within 20's 33%. Rechentrainer also leads on price (Free vs $2.99) and update cadence (every 2 months vs every 36 months). Add and subtract within 20's advantage is iOS requirement (12.0 vs 14.2). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Rechentrainer is free to download; Add and subtract within 20 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Add and subtract within 20 ships an update every 36 months, Rechentrainer every 2 months. Both last shipped on November 3, 2026.
| Parameter | Add and subtract within 20 | Rechentrainer |
|---|---|---|
| Price | $2.99 | Free — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Update frequency | Every 36 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.2 |
| Further details — not scored | ||
| Size | 18 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergey Malugin | Nicolai Kummer |
Customer experience
Add and subtract within 20
Rechentrainer
In-app purchases
Add and subtract within 20
No in-app purchases
Rechentrainer
No in-app purchases
Questions
Is Add and subtract within 20 free?
Is Rechentrainer free?
Do Add and subtract within 20 or Rechentrainer have ads?
Which is updated more often, Add and subtract within 20 or Rechentrainer?
Other comparisons
