# igs　イグズ vs Relaxation mummy　公式アプリ

igs　イグズ and Relaxation mummy　公式アプリ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

igs　イグズ ships an update every 38 months, Relaxation mummy　公式アプリ every 39 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | igs　イグズ | Relaxation mummy　公式アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 38 months** | Every 39 months |
| Size | 35 MB | 22 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SUGURU ISHIGURO](https://appshunter.io/developer/1566959243) | [MAYUMI UWAFUNE](https://appshunter.io/developer/1627465248) |

## What reviewers say

### igs　イグズ

[App page](https://appshunter.io/ios/app/igs/id1566959241)

**In-app purchases:** none


### Relaxation mummy　公式アプリ

[App page](https://appshunter.io/ios/app/relaxation-mummy/id1627465246)

**In-app purchases:** none


## Frequently asked questions

### Is igs　イグズ free?

igs　イグズ is free to download, with no in-app purchases.

### Is Relaxation mummy　公式アプリ free?

Relaxation mummy　公式アプリ is free to download, with no in-app purchases.

### Do igs　イグズ or Relaxation mummy　公式アプリ have ads?

Neither igs　イグズ nor Relaxation mummy　公式アプリ shows ads.

### Which is updated more often, igs　イグズ or Relaxation mummy　公式アプリ?

igs　イグズ ships an update every 38 months, and Relaxation mummy　公式アプリ every 39 months. Most recently, igs　イグズ was updated on November 3, 2026 and Relaxation mummy　公式アプリ on November 3, 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.*