# Zen Flip Clock vs Su

The clearest difference is in-app purchases: Su at none against Zen Flip Clock's 3. Su also leads on iOS requirement (8.0 vs 15.0). Zen Flip Clock's advantage is update cadence (every 2 weeks vs every 23 months). On price, ads and device support there is nothing between them.

Both are free to download. Zen Flip Clock sells 3 in-app purchases, starting at $0.99 per month. Su asks for nothing beyond the download.

Zen Flip Clock ships an update every 2 weeks, Su every 23 months. The most recent releases landed on October 3, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Zen Flip Clock | Su |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (6.2K ratings)](https://appshunter.io/ios/app/zen-flip-clock-minimal-timer/id1265404088/reviews)** | — |
| Number of ratings | **6.2K** | — |
| Positive reviews | 71.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 23 months |
| Monetization | Free with in-app purchases | — |
| Size | 104 MB | 3 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chaoyang Minimal Software Studio](https://appshunter.io/developer/1065436362) | [takashi ishimoto](https://appshunter.io/developer/1491708628) |

## What reviewers say

### Zen Flip Clock

[App page](https://appshunter.io/ios/app/zen-flip-clock-minimal-timer/id1265404088)

This app offers a minimalist clock experience with multiple themes and powerful focus tools. It functions as a fullscreen desk clock and includes a Pomodoro timer, stopwatch, and hourly chime to help manage time and improve productivity.

**Highlights:** Multiple clock themes (flip, digital, minimalist), Fullscreen desk clock functionality, Pomodoro timer for focused work sessions, Stopwatch for timing tasks, Hourly chime for routine building, Time usage statistics, Home and lock screen widgets

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $0.99 | per month |
| Yearly Pro | $4.99 | per year |
| Lifetime Pro | $9.99 | one-time |

**What reviewers like**

- 🚀 Amazing app
- 👍 Aesthetic and minimalistic
- 👍 Useful for studying and productivity
- 👍 Simple and easy to use
- 👍 Great for a desk clock

**What reviewers complain about**

- 🐛 Time display issues
- 🐛 Widget not working as expected
- 🐛 Pomodoro timer resets when switching apps
- 🔋 High battery consumption
- 💰 Paid features required for full functionality

**Reported bugs**

- Time display inaccuracies
- Widget freezing and displaying incorrect time
- Pomodoro timer not working as expected
- Compatibility issues with latest iOS updates
- App crashing or becoming unresponsive

**Requested features**

- Add alarm functionality
- Implement live activities support
- Allow custom pomodoro timer durations
- Provide more theme/color options
- Add world clock/timezone support


### Su

[App page](https://appshunter.io/ios/app/su/id1491709516)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zen Flip Clock free?

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

### Is Su free?

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

### Do Zen Flip Clock or Su have ads?

Neither Zen Flip Clock nor Su shows ads.

### Which is updated more often, Zen Flip Clock or Su?

Zen Flip Clock ships an update every 2 weeks, and Su every 23 months. Most recently, Zen Flip Clock was updated on October 3, 2026 and Su on September 13, 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.*