Comparison

Rechentrainer vs 4 Plus 4

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Personalized arithmetic practice
  • Customizable difficulty levels
  • Motivational reward system
  • Learning progress tracking
  • Suitable for all ages
Features
Read 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!

About

4 Plus 4

This app offers a clear, step-by-step approach to learning mathematics. It features structured modules for number basics, arithmetic, and fractions, with playful sections to apply learned concepts. Designed to make math understandable and enjoyable, it's ideal for beginners and for refreshing knowledge.

Highlights
  • Clear learning modules
  • Step-by-step guidance
  • Structured practice
  • Playful application sections
  • Progress tracking
  • Ad-free experience
Features
Read full description

Math often feels complicated. Not because it’s hard, but because it’s explained the wrong way. 4 Plus 4 is different. No overloaded explanations, no distractions, and no shortcuts. Just clear tasks that guide you forward step by step. The app is ad-free and does not collect personal data. It is built around clear learning modules such as Number Basics, Advanced Numbers, Basic Arithmetic and Fractions Basics, where key mathematical concepts are practiced in a structured and easy-to-follow way. In additional sections, you can apply what you have learned in a playful and entertaining way. 4 Plus 4 combines clear learning with motivation, progress, and fun — ideal for getting started, refreshing knowledge, or practicing in between. We continuously expand the app with new content to make learning mathematics as simple, understandable, and enjoyable as possible.

Screenshots

Rechentrainer4 screens
4 Plus 44 screens

Verdict

The call

The clearest difference is in-app purchases: Rechentrainer at none against 4 Plus 4's 1. On price, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 4 Plus 4 sells 1 one-off in-app purchase. Rechentrainer asks for nothing beyond the download.

UpkeepUpdate frequency

Rechentrainer ships an update every 2 months, 4 Plus 4 monthly. The most recent releases landed on June 4, 2026 and July 24, 2026 respectively.

Scorecard1 real difference · 9 level
Rechentrainer versus 4 Plus 4: the parameters behind the verdict, then further details
ParameterRechentrainer4 Plus 4
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.213.0 — better
Further details — not scored
Size7 MB38 MB
Age rating4+4+
DeveloperNicolai KummerPatrick Koehnen

Customer experience

Rechentrainer

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

4 Plus 4

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Rechentrainer

No in-app purchases

1 purchases

4 Plus 4

One-time1
  • All Inclusive$1.99

Questions

Is Rechentrainer free?
Rechentrainer is free to download, with no in-app purchases.
Is 4 Plus 4 free?
4 Plus 4 is free to download, with in-app purchases available.
Do Rechentrainer or 4 Plus 4 have ads?
Neither Rechentrainer nor 4 Plus 4 shows ads.
Which is updated more often, Rechentrainer or 4 Plus 4?
Rechentrainer ships an update every 2 months, and 4 Plus 4 monthly. Most recently, Rechentrainer was updated on June 4, 2026 and 4 Plus 4 on July 24, 2026.

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