# I.M.T.C. vs Mental Math

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.

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.

## The numbers

| Metric | I.M.T.C. | Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mental-math-kalc/id6764098294/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 30 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 17 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Buzz Micro Buzz Micro](https://appshunter.io/developer/1657138114) | [LMT Digital Creations](https://appshunter.io/developer/640455461) |

## What reviewers say

### I.M.T.C.

[App page](https://appshunter.io/ios/app/imtc/id6444828042)

**In-app purchases:** none


### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-kalc/id6764098294)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plan Annuel | $17.99 | one-time |
| Accès à vie | $29.99 | one-time |


## Frequently asked questions

### Is I.M.T.C. free?

I.M.T.C. is free to download, with no in-app purchases.

### Is Mental Math free?

Mental Math is free to download, with in-app purchases available.

### Which is updated more often, I.M.T.C. or Mental Math?

I.M.T.C. ships an update every 30 months, and Mental Math fortnightly. Most recently, I.M.T.C. was updated on October 1, 2026 and Mental Math on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*