# ロック画面カレンダー vs SFClock

The clearest difference is in-app purchases: SFClock at none against ロック画面カレンダー's 1. SFClock also leads on update cadence (every 5 months vs every 14 months) and device support (3 vs 1). ロック画面カレンダー's advantage is review sentiment (58% vs 33%). On price, ads and iOS requirement there is nothing between them.

Both are free to download. ロック画面カレンダー sells 1 one-off in-app purchase. SFClock asks for nothing beyond the download.

ロック画面カレンダー ships an update every 14 months, SFClock every 5 months. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ロック画面カレンダー | SFClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/sfclock/id1627863783/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | **58.0% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 29 MB | 0 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Suzuki Creative](https://appshunter.io/developer/404832413) | [Yafei Dong](https://appshunter.io/developer/1562436731) |

## What reviewers say

### ロック画面カレンダー

[App page](https://appshunter.io/ios/app/id908861866)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除 | $0.99 | one-time |


### 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


## Frequently asked questions

### Is ロック画面カレンダー free?

ロック画面カレンダー is free to download, with in-app purchases available.

### Is SFClock free?

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

### Do ロック画面カレンダー or SFClock have ads?

Neither ロック画面カレンダー nor SFClock shows ads.

### Which is updated more often, ロック画面カレンダー or SFClock?

ロック画面カレンダー ships an update every 14 months, and SFClock every 5 months. Most recently, ロック画面カレンダー was updated on October 15, 2026 and SFClock on October 18, 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.*