# GachaSimulator vs Idle App Studio

The clearest difference is in-app purchases: GachaSimulator at none against Idle App Studio's 2. Idle App Studio's advantage is ads (none vs shown) and update cadence (every 2 days vs weekly). On price there is nothing between them.

Both are free to download. Idle App Studio sells 2 one-off in-app purchases. GachaSimulator asks for nothing beyond the download.

GachaSimulator ships an update weekly, Idle App Studio every 2 days. The most recent releases landed on September 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | GachaSimulator | Idle App Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 2 days** |
| Size | 23 MB | 70 MB |
| Requires iOS | 18.1 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YUSUKE KAJIWARA](https://appshunter.io/developer/1530040087) | [DIMITRI DAVID](https://appshunter.io/developer/1844898418) |

## What reviewers say

### GachaSimulator

[App page](https://appshunter.io/ios/app/gachasimulator/id6746760878)

**Features:** macOS Compatibility

**In-app purchases:** none


### Idle App Studio

[App page](https://appshunter.io/ios/app/idle-app-studio-dev-game/id6788320331)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nuit blanche de code | $0.99 | one-time |
| Café XXL | $0.99 | one-time |


## Frequently asked questions

### Is GachaSimulator free?

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

### Is Idle App Studio free?

Idle App Studio is free to download, with in-app purchases available.

### Do GachaSimulator or Idle App Studio have ads?

GachaSimulator shows ads; Idle App Studio does not.

### Which is updated more often, GachaSimulator or Idle App Studio?

GachaSimulator ships an update weekly, and Idle App Studio every 2 days. Most recently, GachaSimulator was updated on September 9, 2026 and Idle App Studio on September 29, 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.*