# FIREシミュレーション vs FIRE Countdown

The clearest difference is update cadence: FIREシミュレーション at every 2 days against FIRE Countdown's every 2 weeks. FIRE Countdown's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.2). On price, ads and in-app purchases there is nothing between them.

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

FIREシミュレーション ships an update every 2 days, FIRE Countdown every 2 weeks. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | FIREシミュレーション | FIRE Countdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 13 MB | 25 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mario Tanaka](https://appshunter.io/developer/505921265) | [Naoyuki Maeda](https://appshunter.io/developer/1570141186) |

## What reviewers say

### FIREシミュレーション

[App page](https://appshunter.io/ios/app/fire/id6742209276)

**Features:** macOS Compatibility

**In-app purchases:** none


### FIRE Countdown

[App page](https://appshunter.io/ios/app/fire-countdown/id6759857140)

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

**In-app purchases:** none


## Frequently asked questions

### Is FIREシミュレーション free?

FIREシミュレーション is free to download, with no in-app purchases.

### Is FIRE Countdown free?

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

### Do FIREシミュレーション or FIRE Countdown have ads?

Both FIREシミュレーション and FIRE Countdown show ads.

### Which is updated more often, FIREシミュレーション or FIRE Countdown?

FIREシミュレーション ships an update every 2 days, and FIRE Countdown every 2 weeks. Most recently, FIREシミュレーション was updated on September 17, 2026 and FIRE Countdown on September 10, 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.*