Rechentrainer vs Oti
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Read full descriptionHide full description
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!
Oti
Read full descriptionHide full description
A comprehensive app to control the TTS Oti-Bot from your iPad. Easily connect to the robot via a QR code and make use of various features such as motors, pen control, LEDs, head movement, line following, colour sensing, setting emotions, facial recognition, taking photos and recording audio or video. Oti-Bot can even stream video so students can watch on as their program is executed. Programs can be created using a block-based programming environment to stretch and challenge even further.
Screenshots
Verdict
The clearest difference is update cadence: Rechentrainer at every 2 months against Oti's every 5 months. Rechentrainer also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rechentrainer ships an update every 2 months, Oti every 5 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.
| Parameter | Rechentrainer | Oti |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 14.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Nicolai Kummer | TTS Group Limited |
In-app purchases
Rechentrainer
No in-app purchases
Oti
No in-app purchases
