# Mental Math Interview Trainer vs Mental Math

The clearest difference is in-app purchases: Mental Math Interview Trainer at none against Mental Math's 2. Mental Math Interview Trainer also leads on update cadence (every 2 days vs fortnightly). Mental Math's advantage is ads (none vs shown) and iOS requirement (17.6 vs 26.4). On price and device support there is nothing between them.

Both are free to download. Mental Math sells 2 one-off in-app purchases. Mental Math Interview Trainer asks for nothing beyond the download.

Mental Math Interview Trainer ships an update every 2 days, Mental Math fortnightly. The most recent releases landed on September 15, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Mental Math Interview Trainer | 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 | Yes | **No** |
| Update frequency | **Every 2 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 17 MB |
| Requires iOS | 26.4 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ludovic Lepic](https://appshunter.io/developer/1892835258) | [LMT Digital Creations](https://appshunter.io/developer/640455461) |

## What reviewers say

### Mental Math Interview Trainer

[App page](https://appshunter.io/ios/app/mental-math-interview-trainer/id6762084410)

**Features:** macOS Compatibility

**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 Mental Math Interview Trainer free?

Mental Math Interview Trainer is free to download, with no in-app purchases.

### Is Mental Math free?

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

### Do Mental Math Interview Trainer or Mental Math have ads?

Mental Math Interview Trainer shows ads; Mental Math does not.

### Which is updated more often, Mental Math Interview Trainer or Mental Math?

Mental Math Interview Trainer ships an update every 2 days, and Mental Math fortnightly. Most recently, Mental Math Interview Trainer was updated on September 15, 2026 and Mental Math on September 26, 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.*