# SFClock vs Alarmium

The clearest difference is in-app purchases: SFClock at none against Alarmium's 2. SFClock also leads on iOS requirement (17.0 vs 26.0). Alarmium's advantage is update cadence (every 8 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Alarmium sells 2 one-off in-app purchases. SFClock asks for nothing beyond the download.

SFClock ships an update every 5 months, Alarmium every 8 days. The most recent releases landed on September 14, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | SFClock | Alarmium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/sfclock/id1627863783/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 0 MB | 8 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yafei Dong](https://appshunter.io/developer/1562436731) | [Ravindu Wataketiya](https://appshunter.io/developer/1671339042) |

## 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


### Alarmium

[App page](https://appshunter.io/ios/app/alarmium/id6752128301)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alarmium Essentials | $4.99 | one-time |
| Alarmium Plus | $9.99 | one-time |


## Frequently asked questions

### Is SFClock free?

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

### Is Alarmium free?

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

### Do SFClock or Alarmium have ads?

Neither SFClock nor Alarmium shows ads.

### Which is updated more often, SFClock or Alarmium?

SFClock ships an update every 5 months, and Alarmium every 8 days. Most recently, SFClock was updated on September 14, 2026 and Alarmium on August 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*