I.M.T.C. vs Mental Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
I.M.T.C.
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Soyez informé des actualités et des informations importantes de l'Institut de Médecine Traditionnelle Chinoise. (Application réservée aux élèves de l'école)
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.
- 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
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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
Verdict
The clearest difference is in-app purchases: I.M.T.C. at none against Mental Math's 2. Mental Math's advantage is update cadence (fortnightly vs every 30 months) and device support. On price 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. Mental Math sells 2 one-off in-app purchases. I.M.T.C. asks for nothing beyond the download.
I.M.T.C. ships an update every 30 months, Mental Math fortnightly. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.
| Parameter | I.M.T.C. | Mental Math |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 30 months | Fortnightly — better |
| Ads | — | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | — | iPhone, iPad — better |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Buzz Micro Buzz Micro | LMT Digital Creations |
In-app purchases
I.M.T.C.
No in-app purchases
Mental Math
- Plan Annuel$17.99
- Accès à vie$29.99









