# NumAndShape vs Mental Math

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

Both are free to download. NumAndShape sells 6 one-off in-app purchases and Mental Math sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

NumAndShape ships an update every 2 months, Mental Math fortnightly. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | NumAndShape | 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 | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 17 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ken morobayashi](https://appshunter.io/developer/954811891) | [LMT Digital Creations](https://appshunter.io/developer/640455461) |

## What reviewers say

### NumAndShape

[App page](https://appshunter.io/ios/app/numandshape/id6468994873)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| prime number | $0.49 | one-time |
| power | $0.49 | one-time |
| per hour | $0.49 | one-time |
| binary number | $0.49 | one-time |
| sin cos tan | $0.49 | one-time |
| NumAndShape Unlimited | $1.99 | one-time |


### 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 NumAndShape free?

NumAndShape 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 NumAndShape or Mental Math have ads?

NumAndShape shows ads; Mental Math does not.

### Which is updated more often, NumAndShape or Mental Math?

NumAndShape ships an update every 2 months, and Mental Math fortnightly. Most recently, NumAndShape was updated on October 8, 2026 and Mental Math on October 15, 2026.

---

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