Comparison

M3 Mental Math vs Grammatiko

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

Head to head
About

M3 Mental Math

Features
Read full description

DO MENTAL MATH THE RIGHT WAY, WITH NO READING AT ALL! With our M3 Mental Math app, you practise mathematics exactly as mental math is meant to be done: in your head and without having to look at the problem. Have the arithmetic problems read aloud to you, work them out in your head, and then simply say your answer out loud. This allows you to do calculations entirely without reading. Ideal for targeted training of mental math, concentration, and calculation speed. You decide how you want to practise: display the problem, have the problem read aloud, or have it read aloud exclusively without displaying it. The answer can also be spoken aloud. This turns traditional math practice into flexible and particularly intensive mental math training that you can use anytime and anywhere. Practise addition, subtraction, multiplication, division, and multiplication tables, improve your number sense, and become faster at mental math step by step. Whether for school, university, work, or everyday life: the app makes learning math and practising mental arithmetic varied, flexible, and direct. START LEARNING MATH AND PRACTICING MENTAL MATH FOR FREE Improve your math skills step by step. This educational math app is suitable for kids, students, teens, adults, and seniors. Perfect for anyone who wants to learn math, practice arithmetic, improve calculation skills, and keep their brain active. Practice Mental Math and Build Strong Math Skills: • Thousands of engaging math exercises, math games, and arithmetic challenges • Master multiplication, times tables, multiplication facts, and calculation strategies • Improve subtraction skills and increase calculation speed • Practice addition and strengthen math fundamentals • Master division and challenging mental math problems • Adjustable difficulty levels for beginners and advanced learners • Create up to three profiles with personalized learning goals and progress tracking • Detailed statistics help track progress and improvement • Improve concentration, focus, number sense, logical thinking, and problem-solving skills • Educationally designed learning system for long-term success in mathematics • Personalized review lists help master difficult exercises • Start for free and explore all difficulty levels PERFECT FOR SCHOOL, HOMEWORK, AND TEST PREPARATION Mental math is one of the most important foundations of mathematics. MATH PRACTICE FOR ADULTS Mental math is valuable at every age. At work, shopping, or in daily life, faster calculations save time and strengthen cognitive performance. Targeted math practice improves arithmetic skills, concentration, memory, and mathematical thinking. BRAIN TRAINING AND MEMORY TRAINING Mental math is more than mathematics. Regular calculation practice supports concentration, focus, logical reasoning, memory, and problem-solving abilities. Daily brain training and brain games improve math skills and keep your mind active. M3 Mental Math combines math practice, math games, brain training, and memory training into an engaging learning experience for kids, students, and adults. THE MATH APP FOR EVERYDAY LEARNING Whether at home or on the go, M3 Mental Math helps you practice math, learn times tables, improve arithmetic skills, strengthen multiplication facts, and increase calculation speed. KEY FEATURES • Practice mental math daily • Learn math and improve math skills • Fun math games and arithmetic challenges • Addition, subtraction, multiplication, and division • Master times tables and multiplication facts • Brain training and memory training • Improve concentration, focus, and problem-solving skills • For kids, students, and adults • Adjustable difficulty levels • Free to start Start using M3 Mental Math today and improve mental math, math skills, arithmetic abilities, times tables, concentration, memory, and calculation speed while having fun learning. Terms of Use (EULA) https://www.schreiben-rechnen.de/en/nutzungsbedingungen

About

Grammatiko

Features
Read full description

**Write German with confidence – through focused practice and instant feedback.** Grammatiko helps you recognize common mistakes in German spelling and grammar and avoid them in the long term. Practice important topics such as: • Comma placement • dass or das • Separate and compound spelling • Common grammar and spelling mistakes You’ll get a variety of practice sentences, instant feedback, and clear explanations of the most important rules. **Learn instead of just guessing** After each exercise, you’ll immediately see whether your answer was correct. If you make a mistake, Grammatiko explains the underlying rule so you don’t just know the right answer — you also understand why it is correct. **Ideal for school, university, and work** Whether you’re preparing for an exam, want to improve your German spelling, or simply feel more confident when writing, short practice sessions help you train regularly and focus on your weaknesses. **Features** • Numerous practice sentences • Multiple grammar and spelling topics • Instant feedback • Clear rule explanations • Track your learning progress • Review difficult exercises • Study reminders • Haptic feedback • Clean and focused user interface Improve your German step by step — with Grammatiko.

Screenshots

M3 Mental Math4 screens
Grammatiko3 screens

Verdict

The call

The clearest difference is update cadence: Grammatiko at every 6 days against M3 Mental Math's every 6 weeks. M3 Mental Math's advantage is iOS requirement (15 vs 17.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. M3 Mental Math sells 2 in-app purchases, starting at $1.99 per month and Grammatiko sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

M3 Mental Math ships an update every 6 weeks, Grammatiko every 6 days. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 4 level
M3 Mental Math versus Grammatiko: the parameters behind the verdict, then further details
ParameterM3 Mental MathGrammatiko
PriceFreeFree
Update frequencyEvery 6 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better17.0
Further details — not scored
Size94 MB12 MB
Age rating4+4+
DeveloperInstitut Dr. Ehrlich e.K.Alexander Mehanic

In-app purchases

2 purchases

M3 Mental Math

Subscriptions2
  • Pro Version (monthly)$1.991 Month
  • Pro Version (annually)$12.991 Year
1 purchases

Grammatiko

One-time1
  • Premium$8.99

Questions

Is M3 Mental Math free?
M3 Mental Math is free to download, with in-app purchases available.
Is Grammatiko free?
Grammatiko is free to download, with in-app purchases available.
Do M3 Mental Math or Grammatiko have ads?
Neither M3 Mental Math nor Grammatiko shows ads.
Which is updated more often, M3 Mental Math or Grammatiko?
M3 Mental Math ships an update every 6 weeks, and Grammatiko every 6 days. Most recently, M3 Mental Math was updated on October 6, 2026 and Grammatiko on October 8, 2026.

Other comparisons