# S3 Clock vs Flip Clock

The clearest difference is update cadence: Flip Clock at monthly against S3 Clock's every 14 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. S3 Clock sells 2 in-app purchases, starting at $0.99 per year and Flip Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

S3 Clock ships an update every 14 months, Flip Clock monthly. The most recent releases landed on September 9, 2026 and August 11, 2026 respectively.

## The numbers

| Metric | S3 Clock | Flip Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/s3-clock/id6461214074/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nosneb Tech](https://appshunter.io/developer/1264664261) | [磊 刘](https://appshunter.io/developer/1892400556) |

## What reviewers say

### S3 Clock

[App page](https://appshunter.io/ios/app/s3-clock/id6461214074)

This app offers a customizable and ad-free idle clock experience. It features a smart, lightweight display with options for color, date/time formatting, orientation, and animation. Designed for accessibility, it promises a stable and private user environment.

**Highlights:** Ad-free experience, Customizable color and formatting, Selectable orientation, Toggleable animation, Lightweight and stable performance, Accessibility friendly

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Donation | $0.99 | per year |
| One Time Donation | $0.99 | one-time |


### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-timer-and-focus/id6767742797)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimpleClock Pro Edition | $2.99 | one-time |


## Frequently asked questions

### Is S3 Clock free?

S3 Clock is free to download, with in-app purchases available.

### Is Flip Clock free?

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

### Do S3 Clock or Flip Clock have ads?

Neither S3 Clock nor Flip Clock shows ads.

### Which is updated more often, S3 Clock or Flip Clock?

S3 Clock ships an update every 14 months, and Flip Clock monthly. Most recently, S3 Clock was updated on September 9, 2026 and Flip Clock on August 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.*