# 1 / f Clock vs 全屏时钟

The clearest difference is in-app purchases: 全屏时钟 at none against 1 / f Clock's 1. 全屏时钟 also leads on update cadence (daily vs every 7 months). 1 / f Clock's advantage is ads (none vs shown) and iOS requirement (8.1 vs 16). On price and device support there is nothing between them.

Both are free to download. 1 / f Clock sells 1 one-off in-app purchase. 全屏时钟 asks for nothing beyond the download.

1 / f Clock ships an update every 7 months, 全屏时钟 daily. The most recent releases landed on November 6, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 1 / f Clock | 全屏时钟 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Daily** |
| Size | 47 MB | 15 MB |
| Requires iOS | **8.1** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Y. MOCHIDUKI](https://appshunter.io/developer/556544131) | [子幸 聂](https://appshunter.io/developer/1881766687) |

## What reviewers say

### 1 / f Clock

[App page](https://appshunter.io/ios/app/1-f-clock/id730286100)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### 全屏时钟

[App page](https://appshunter.io/ios/app/id6760887937)

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

**In-app purchases:** none


## Frequently asked questions

### Is 1 / f Clock free?

1 / f Clock is free to download, with in-app purchases available.

### Is 全屏时钟 free?

全屏时钟 is free to download, with no in-app purchases.

### Do 1 / f Clock or 全屏时钟 have ads?

全屏时钟 shows ads; 1 / f Clock does not.

### Which is updated more often, 1 / f Clock or 全屏时钟?

1 / f Clock ships an update every 7 months, and 全屏时钟 daily. Most recently, 1 / f Clock was updated on November 6, 2026 and 全屏时钟 on November 9, 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.*