# MARU World vs Math Grid Calculation Training

The clearest difference is ads: MARU World at none against Math Grid Calculation Training's shown. MARU World also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MARU World ships an update every 4 weeks, Math Grid Calculation Training every 2 months. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | MARU World | Math Grid Calculation Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Size | 93 MB | 95 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ENONE Inc.](https://appshunter.io/developer/867422611) | [Masaki Kanno](https://appshunter.io/developer/843112443) |

## What reviewers say

### MARU World

[App page](https://appshunter.io/ios/app/maru-world/id6745872396)

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Grid Calculation Training

[App page](https://appshunter.io/ios/app/math-grid-calculation-training/id6769310340)

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

**In-app purchases:** none


## Frequently asked questions

### Is MARU World free?

MARU World is free to download, with no in-app purchases.

### Is Math Grid Calculation Training free?

Math Grid Calculation Training is free to download, with no in-app purchases.

### Do MARU World or Math Grid Calculation Training have ads?

Math Grid Calculation Training shows ads; MARU World does not.

### Which is updated more often, MARU World or Math Grid Calculation Training?

MARU World ships an update every 4 weeks, and Math Grid Calculation Training every 2 months. Most recently, MARU World was updated on October 11, 2026 and Math Grid Calculation Training on October 12, 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.*