# SFClock vs Digital Clock Ultra

The clearest difference is review sentiment: Digital Clock Ultra at 100% against SFClock's 33%. Digital Clock Ultra also leads on rating (5.0 vs 4.5) and update cadence (every 3 weeks vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Digital Clock Ultra holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 33% of SFClock's written reviews are positive against 100% of Digital Clock Ultra's.

SFClock ships an update every 5 months, Digital Clock Ultra every 3 weeks. The most recent releases landed on September 14, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SFClock | Digital Clock Ultra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/sfclock/id1627863783/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/digital-clock-ultra/id1672768275/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 0 MB | 42 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Yafei Dong](https://appshunter.io/developer/1562436731) | [SeungJun Lee](https://appshunter.io/developer/1435485286) |

## What reviewers say

### SFClock

[App page](https://appshunter.io/ios/app/sfclock/id1627863783)

This utility app displays a flip clock and calendar. It offers customizable clock settings like 12/24 hour format and seconds display. Users can navigate the calendar and choose from various light and dark color themes.

**Highlights:** Flip clock display, Calendar view, 12/24 hour format, Seconds display toggle, Calendar month navigation, Color themes, Light/dark mode

**Features:** macOS Compatibility

**In-app purchases:** none


### Digital Clock Ultra

[App page](https://appshunter.io/ios/app/digital-clock-ultra/id1672768275)

Customize your device's clock with personalized backgrounds, calendar integration, and a year progress tracker. Enjoy a sleek, easy-to-navigate interface for a unique time-keeping experience.

**Highlights:** Customizable digital clock display, 12/24 hour format, Built-in calendar with date marking, Year progress percentage tracker, Personalized photo backgrounds, Sleek and modern UI

**In-app purchases:** none


## Frequently asked questions

### Is SFClock free?

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

### Is Digital Clock Ultra free?

Digital Clock Ultra is free to download, with no in-app purchases.

### Which has better reviews, SFClock or Digital Clock Ultra?

Digital Clock Ultra is rated higher. SFClock averages 4.5 out of 5 from 4 ratings, while Digital Clock Ultra averages 5.0 from 4 ratings.

### Do SFClock or Digital Clock Ultra have ads?

Neither SFClock nor Digital Clock Ultra shows ads.

### Which is updated more often, SFClock or Digital Clock Ultra?

SFClock ships an update every 5 months, and Digital Clock Ultra every 3 weeks. Most recently, SFClock was updated on September 14, 2026 and Digital Clock Ultra on September 20, 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.*