Comparison

SFClock vs Dual Flip Clock

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

Head to head
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.

About

Dual Flip Clock

Transform an old phone into a stylish desktop clock with this app. Easily switch between time zones for different cities or schools, and enjoy automatic day and night modes for a comfortable viewing experience.

Highlights
  • Desktop clock conversion
  • Multiple city/school time zones
  • Vertical and horizontal layouts
  • Automatic Day/Night Modes
  • Customizable display
Features
Read full description

I'm in Beijing. My family is in Vancouver. I used to do the math on my fingers, or open the world clock twice. Now I turn the phone sideways onto the charging stand and both cities stand there side by side. I just look up. TWO CITIES, ONE SCREEN Two clocks, stacked or side by side, each on its own city's time. No more counting hours. FOUR LOOKS Flip, for the mechanical clack of a split-flap board. Glass, when you want it clean. City Day & Night, to see at a glance whether it's light over there. Single City, when you only care about one. WHAT'S THE WEATHER THERE Each clock carries the current conditions and temperature. Faster than asking "is it cold where you are?" IT DIMS WHEN IT GETS DARK THERE Night brightness follows the city on screen, not your phone. When it's night on their side, that half dims and the stars come out. Easy on the eyes at 3am. IT FINDS THE PLACE A built-in worldwide city database that also includes universities and high schools - search "Stanford University" and it's there. Anything missing is looked up online, and saved only if you pick it. Cities you use often float to the top. LOCK SCREEN AND HOME SCREEN WIDGETS Small, medium, large, extra large. The larger sizes show dates and weather for both cities at once. LANDSCAPE, ALWAYS ON The screen won't lock while the app is open - it's built to sit on a desk, a nightstand, a charging stand. Works in both landscape directions, so it's upright however you set it down. PRIVACY Location is optional. It's used only when you turn on GPS mode, to show the time and temperature where you are.

Screenshots

SFClock4 screens
Dual Flip Clock4 screens

Verdict

The call

The clearest difference is review sentiment: Dual Flip Clock at 100% against SFClock's 33%. Dual Flip Clock also leads on rating (5.0 vs 4.5) and update cadence (every 10 days vs every 5 months). On price, ratings volume, ads and in-app purchases 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

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

ReceptionRating · Positive reviews · Number of ratings

Dual Flip Clock holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 33% of SFClock's written reviews are positive against 100% of Dual Flip Clock's.

UpkeepUpdate frequency

SFClock ships an update every 5 months, Dual Flip Clock every 10 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
SFClock versus Dual Flip Clock: the parameters behind the verdict, then further details
ParameterSFClockDual Flip Clock
PriceFreeFree
Rating4.5 (4 ratings)5.0 (2 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings4 — better2
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, Vision ProiPhone, iPad, Mac
Requires iOS17.017.0
Further details — not scored
Size0 MB18 MB
Age rating4+4+
DeveloperYafei Dong路 林

Customer experience

SFClock

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

Dual Flip Clock

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SFClock

No in-app purchases

None

Dual Flip Clock

No in-app purchases

Questions

Is SFClock free?
SFClock is free to download, with no in-app purchases.
Is Dual Flip Clock free?
Dual Flip Clock is free to download, with no in-app purchases.
Which has better reviews, SFClock or Dual Flip Clock?
Dual Flip Clock is rated higher. SFClock averages 4.5 out of 5 from 4 ratings, while Dual Flip Clock averages 5.0 from 2 ratings.
Do SFClock or Dual Flip Clock have ads?
Neither SFClock nor Dual Flip Clock shows ads.
Which is updated more often, SFClock or Dual Flip Clock?
SFClock ships an update every 5 months, and Dual Flip Clock every 10 days. Most recently, SFClock was updated on October 30, 2026 and Dual Flip Clock on October 24, 2026.

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