# Flip Timer Clock vs OTB Clock

The clearest difference is in-app purchases: Flip Timer Clock at none against OTB Clock's 1. Flip Timer Clock also leads on iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. OTB Clock sells 1 in-app purchase, starting at $19.99 per year. Flip Timer Clock asks for nothing beyond the download.

## The numbers

| Metric | Flip Timer Clock | OTB Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 8 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Hebei Hanyue Technology Co., Ltd.](https://appshunter.io/developer/1524038411) | [杰 向](https://appshunter.io/developer/1860305678) |

## What reviewers say

### Flip Timer Clock

[App page](https://appshunter.io/ios/app/flip-timer-clock/id6714470951)

**Features:** macOS Compatibility

**In-app purchases:** none


### OTB Clock

[App page](https://appshunter.io/ios/app/otb-clock/id6762344990)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium — Yearly | $19.99 | per year |


## Frequently asked questions

### Is Flip Timer Clock free?

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

### Is OTB Clock free?

OTB Clock is free to download, with in-app purchases available.

### Do Flip Timer Clock or OTB Clock have ads?

Neither Flip Timer Clock nor OTB Clock shows ads.

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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.*