# MENTENA（メンテナ） vs 1A1M

The clearest difference is update cadence: MENTENA（メンテナ） at monthly against 1A1M's every 4 months. 1A1M's advantage is iOS requirement (15.0 vs 18.0). On price, ads, 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.

MENTENA（メンテナ） ships an update monthly, 1A1M every 4 months. The most recent releases landed on September 9, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | MENTENA（メンテナ） | 1A1M |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 137 MB | 71 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [八千代ソリューションズ株式会社](https://appshunter.io/developer/1795814388) | [IDEC CORPORATION](https://appshunter.io/developer/609407337) |

## What reviewers say

### MENTENA（メンテナ）

[App page](https://appshunter.io/ios/app/mentena/id1490994411)

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

**In-app purchases:** none


### 1A1M

[App page](https://appshunter.io/ios/app/1a1m/id6461311298)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MENTENA（メンテナ） free?

MENTENA（メンテナ） is free to download, with no in-app purchases.

### Is 1A1M free?

1A1M is free to download, with no in-app purchases.

### Do MENTENA（メンテナ） or 1A1M have ads?

Neither MENTENA（メンテナ） nor 1A1M shows ads.

### Which is updated more often, MENTENA（メンテナ） or 1A1M?

MENTENA（メンテナ） ships an update monthly, and 1A1M every 4 months. Most recently, MENTENA（メンテナ） was updated on September 9, 2026 and 1A1M on May 19, 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.*