# Fire Calculator vs Big Timer

The clearest difference is update cadence: Big Timer at every 7 months against Fire Calculator's every 65 months. Big Timer also leads on device support and iOS requirement (13.0 vs 15.1). On price 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 Calculator ships an update every 65 months, Big Timer every 7 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | Fire Calculator | Big Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | Yes |
| Update frequency | Every 65 months | **Every 7 months** |
| Size | 37 MB | 33 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Burak Bilgin](https://appshunter.io/developer/1501098450) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### Fire Calculator

[App page](https://appshunter.io/ios/app/fire-calculator/id1535503681)

**In-app purchases:** none


### Big Timer

[App page](https://appshunter.io/ios/app/big-timer-focus-and-countdown/id6746898648)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fire Calculator free?

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

### Is Big Timer free?

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

### Which is updated more often, Fire Calculator or Big Timer?

Fire Calculator ships an update every 65 months, and Big Timer every 7 months. Most recently, Fire Calculator was updated on October 11, 2026 and Big Timer on October 11, 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.*