# ONE WATCH vs Hourline

The clearest difference is update cadence: ONE WATCH at every 3 days against Hourline's every 2 weeks. ONE WATCH also leads on device support (3 vs 1). Hourline's advantage is iOS requirement (16.4 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ONE WATCH sells 3 in-app purchases, starting at $2.99 per month and Hourline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ONE WATCH ships an update every 3 days, Hourline every 2 weeks. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ONE WATCH | Hourline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 52 MB | 46 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Johann Szebeni](https://appshunter.io/developer/1880746405) | [Jin Woo Park](https://appshunter.io/developer/6792679666) |

## What reviewers say

### ONE WATCH

[App page](https://appshunter.io/ios/app/one-watch-timezone-clock/id6777670673)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $24.99 | per year |
| Premium Lifetime | $99.99 | one-time |


### Hourline

[App page](https://appshunter.io/ios/app/hourline-timezone-widget/id6792679664)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Customizations | $4.99 | one-time |


## Frequently asked questions

### Is ONE WATCH free?

ONE WATCH is free to download, with in-app purchases available.

### Is Hourline free?

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

### Do ONE WATCH or Hourline have ads?

Neither ONE WATCH nor Hourline shows ads.

### Which is updated more often, ONE WATCH or Hourline?

ONE WATCH ships an update every 3 days, and Hourline every 2 weeks. Most recently, ONE WATCH was updated on October 9, 2026 and Hourline on October 25, 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.*