Comparison

Euclide! vs Mental Math

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

Head to head
About

Euclide!

Embark on a math adventure where solving problems advances a story. Explore worlds, play mini-games, and master concepts from elementary to middle school. Offers modes for exam preparation and general skill improvement.

Highlights
  • Story-driven math challenges
  • Mini-games and challenges
  • Middle school curriculum coverage
  • Exam preparation mode
  • Progress tracking with belts
  • Multiplayer challenges
Features
Read full description

Euclide ! L’aventure mathématique Une tortue, un chat, le collège. Et ça marche aussi pour les grands. Euclide, tortue millénaire, et Pénélope, chat aventurier, traquent le Cœur des Ténèbres. Toi, tu calcules. Chaque bonne réponse fait avancer l’histoire : sauter, attraper, cuisiner, viser. Les programmes du collège (CM → 3e) deviennent une campagne. En 3e, un mode Automatismes calé sur les attendus du brevet : épreuve type (mix de tags, 20 min, sans calculatrice) et entraînement par famille. Idéal pour les réflexes calcul, fractions, pourcentages, Pythagore, Thalès… Des collégiens ont progressé en calcul mental et en automatismes. Des adultes aussi — parents, remise à niveau, plaisir de rejouer avec les maths. Pas de cours magistral. Du jeu, des ceintures, du défi. Plus de 22 000 questions. Mode Simple ou Pro. 5 mondes. Mini-jeux. Défis entre amis. Automatismes 3e, façon brevet. Gratuit Tutoriel. Calcul mental complet. Plus la première ceinture du monde que tu as choisi à l’inscription : 6e, 5e, 4e ou 3e. Premium (abonnement) Tous les mondes, tous les mini-jeux, Fun Park, Défi et 1v1, Automatismes 3e, classements, skins. Aucune pub. Tarifs et durée affichés avant l’achat. Résiliation dans les réglages Apple (l’abonnement ne s’arrête pas si tu supprimes seulement le compte). Les 5 mondes • Calcul mental — Égypte — Mummy Jump • 6e — Forêt kawaii — Catch d’ingrédients • 5e — Abysses — Catch sous-marin • 4e — Bistrot parisien — Cuisine chrono • 3e — Espace — Penelope Attaque + automatismes brevet 8 à 16 ceintures par monde. QCM, calculs, équations, exercices Scratch. Illumine les Ténèbres. Euclide et Pénélope t’attendent. Support : euclide.app@gmail.com Conditions d’utilisation (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Mental Math

Sharpen your mental math skills with daily practice. This app uses spaced repetition to help you master concepts like fractions, percentages, and algebra. It offers two modes for flexible learning and provides real-life examples of how math is used every day.

Highlights
  • Spaced repetition system (SRS)
  • Covers multiplication, division, fractions, percentages, algebra
  • Zen and Chrono practice modes
  • Visible progress tracking
  • Real-life math examples
  • Home screen widgets
  • Customizable reminders
Features
Read full description

10 minutes a day to keep your mental math sharp. Whether you're in middle school, in high school, or an adult who wants to reconnect with math, Kalc helps you forge solid mental reflexes, without cramming. Spaced repetition system (SRS): concepts you master space out over time, the ones you miss come back the next day. The method known to deliver the most learning per minute practiced. WHO IT'S FOR · UK students (Year 7-10), US students (Grade 6-9) · Other English-speaking systems (Canada, Australia, Ireland, NZ) · Spanish-speaking students (Spain ESO, Mexico secundaria/preparatoria) · French-speaking students (France, Belgium, Switzerland, Quebec) · Adults who want to get back fluency with mental math Each user picks their school system during onboarding. Content and examples adapt. WHAT KALC COVERS · Multiplication and division (times tables, decimals, signed) · Fractions (simplification, operations, fraction of a whole) · Percentages (calculation, increase, discount, compound change) · Powers and square roots · Algebra and order of operations · Addition and subtraction of signed integers TWO PRACTICE MODES · Zen mode: at your own pace, no pressure, to consolidate the basics · Chrono mode: against the clock, to build speed under exam conditions VISIBLE PROGRESS Every skill has its own level and progress bar. You see exactly where you stand and what's left to master. IN REAL LIFE Every session ends with a concrete example of how this skill serves you day to day: splitting a restaurant tab, reading a paycheck, working out a discount, planning a budget. Mental math is something you actually use. HOME SCREEN WIDGETS Track your progress straight from your iOS home screen, without opening the app. Streak, XP and skills in progress at a glance. MEASURED REMINDERS Up to 5 reminders over the first 3 weeks, off at any time. No spam, no guilt-tripping. ONE-TIME PURCHASE, NO SUBSCRIPTION Kalc is free to download (1 skill available without purchase). Full access unlocks with a single purchase (lifetime or 1 year non-renewing). No traps, no hidden paywall. PRIVACY All your data stays on your device and syncs through your personal iCloud account. No ads, no advertising tracking, no cookies. Kalc is for people who want real progress in mental math. Privacy policy: https://lmtdigitalcreations.com/kalc/privacy.html Terms of use: https://lmtdigitalcreations.com/kalc/terms.html

Screenshots

Euclide!4 screens
Mental Math4 screens

Verdict

The call

The clearest difference is update cadence: Euclide! at daily against Mental Math's fortnightly. Euclide! also leads on iOS requirement (15.6 vs 17.6). On price, ads, in-app purchases and monetization model 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. Euclide! sells 2 in-app purchases, starting at $6.99 per month and Mental Math sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Euclide! ships an update daily, Mental Math fortnightly. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Euclide! versus Mental Math: the parameters behind the verdict, then further details
ParameterEuclide!Mental Math
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequencyDaily — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size1021 MB17 MB
Age rating9+4+
DeveloperROGER-CHARLES JEAN TISSIERLMT Digital Creations

Customer experience

Euclide!

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Mental Math

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

2 purchases

Euclide!

Subscriptions2
  • Abonnement Mensuel$6.991 Month
  • Abonnement Annuel$59.991 Year
2 purchases

Mental Math

One-time2
  • Plan Annuel$17.99
  • Accès à vie$29.99

Questions

Is Euclide! free?
Euclide! is free to download, with in-app purchases available.
Is Mental Math free?
Mental Math is free to download, with in-app purchases available.
Do Euclide! or Mental Math have ads?
Neither Euclide! nor Mental Math shows ads.
Which is updated more often, Euclide! or Mental Math?
Euclide! ships an update daily, and Mental Math fortnightly. Most recently, Euclide! was updated on October 9, 2026 and Mental Math on October 15, 2026.

Other comparisons