Comparison

Calendar Clock vs SFClock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calendar Clock

This app displays the current year, month, week, and time on a single screen with a clean design. It offers customizable theme colors and functions as a desk clock. The app disables device sleep mode while active.

Highlights
  • All-in-one screen display
  • Year, month, week, day, hour, minute, second
  • Switchable theme colors (dark, light, green, blue)
  • Disables device sleep mode
  • Acts as a desk clock
Features
Read full description

Time and date, beautifully together. Calendar Clock is a simple, elegant time-and-calendar app designed for iPhone and iPad. See the current time and the entire month at a glance, with a clean interface that stays out of your way. Features * Large digital clock — View the current system time clearly and instantly. * 24-hour or 12-hour format — Swipe across the clock to switch between 24-hour and AM/PM formats. * Monthly calendar — See the full month with the current year and month displayed above it. * Swipe through months — Swipe left or right on the calendar to move between months. * Today at a glance — Today's date is highlighted with a red circle. * Weekend highlighting — Saturdays and Sundays are displayed in red. * Multiple themes — Swipe up or down to change the screen theme. * Remembers your preferences — Your selected clock format and theme are preserved. * iPhone & iPad — Designed for both iPhone and iPad. Simple by design No complicated menus. No unnecessary controls. Just the time and the calendar, exactly when you need them. Calendar Clock — See time. See your day. Note that this application disables your device's sleep mode while running, so make sure you have enough battery life. *Important notice: Use the information recoded or functionality provided in / or generated with this application only as a rough indication, rough estimates or as a rough guide. Even though we do our best to provide you with confirmed information and tried-and-tested features, the accuracy and successful operation and performance of the application are NOT GUARANTEED by us. Users are strongly advised to confirm the information of their interest with other sources and not to ultimately rely on functionality and performance of this application. This application is provided “as is” and with all faults. You bear the risk of using it. We shall not be responsible or liable for any loss or damage of any kind incurred as a result of the use of functions or the content of this application. By using this application you are agreeing to these terms. If you do not agree to these terms do not use this application.

About

SFClock

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
Read full description

SFClock is a simple flip clock and calendar App. Flip clock and calendar are displayed in portrait, and only clock in landscape. You can change 12/24 hours and seconds display of clock. You also can move month in calendar with the arrows, and back to current month by tapping the month title. There are many color themes, and you can choose a light or dark one to use.

Screenshots

Calendar Clock4 screens
SFClock4 screens

Verdict

The call

The clearest difference is price: SFClock at Free against Calendar Clock's $0.99. SFClock also leads on review sentiment (33% vs 0%) and update cadence (every 5 months vs every 41 months). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

SFClock is free to download; Calendar Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calendar Clock ships an update every 41 months, SFClock every 5 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

Scorecard5 real differences · 5 level
Calendar Clock versus SFClock: the parameters behind the verdict, then further details
ParameterCalendar ClockSFClock
Price$0.99Free — better
Rating—4.5 (4 ratings) — better
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings—4 — better
Update frequencyEvery 41 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, Vision Pro — better
Requires iOS26.517.0 — better
Further details — not scored
Size4 MB0 MB
Age rating4+4+
DeveloperSystemiko Inc.Yafei Dong

Customer experience

Calendar Clock

Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

SFClock

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral66.7%
Negative0.0%

In-app purchases

None

Calendar Clock

No in-app purchases

None

SFClock

No in-app purchases

Questions

Is Calendar Clock free?
Calendar Clock costs $0.99, with no in-app purchases.
Is SFClock free?
SFClock is free to download, with no in-app purchases.
Do Calendar Clock or SFClock have ads?
Neither Calendar Clock nor SFClock shows ads.
Which is updated more often, Calendar Clock or SFClock?
Calendar Clock ships an update every 41 months, and SFClock every 5 months. Most recently, Calendar Clock was updated on September 30, 2026 and SFClock on October 2, 2026.

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