Comparison

Clock Seconds 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

Clock Seconds

A highly accurate and customizable digital clock that fills your screen. Offers adjustable colors, sizes, and 12/24 hour formats. Designed for minimal battery usage.

Highlights
  • Largest digital clock display
  • Accurate atomic time comparison
  • Customizable colors and dimensions
  • 12/24 hour format options
  • Minimal battery consumption design
  • Portrait mode settings access
Features
Read full description

Largest and most accurate digital clock to fit your screen, with customizable colors, dimensions, 12/24 hour modes, atomic (compare to https://time.gov) , and more. To customize the clock use Portrait, tap the clock to show / hide settings. The app was designed to minimize battery consumption on your device. Compare accuracy to https://time.gov

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

Clock Seconds4 screens
Dual Flip Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: Dual Flip Clock at none against Clock Seconds's 2. Dual Flip Clock also leads on update cadence (every 10 days vs every 4 weeks). Clock Seconds's advantage is iOS requirement (13.0 vs 17.0). On price, rating, ratings volume and ads 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. Clock Seconds sells 2 one-off in-app purchases. Dual Flip Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Clock Seconds against 5.0 for Dual Flip Clock. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UpkeepUpdate frequency

Clock Seconds ships an update every 4 weeks, Dual Flip Clock every 10 days. The most recent releases landed on October 2, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 6 level
Clock Seconds versus Dual Flip Clock: the parameters behind the verdict, then further details
ParameterClock SecondsDual Flip Clock
PriceFreeFree
Rating5.0 (4 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings4 — better2
Update frequencyEvery 4 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size22 MB10 MB
Age rating4+4+
DeveloperDavid Engler - Apps路 林

Customer experience

Clock Seconds

All ratings3 ratings
Positive100.0%
Neutral0.0%
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

2 purchases

Clock Seconds

One-time2
  • Remove Ads$2.99
  • Unlock$9.99
None

Dual Flip Clock

No in-app purchases

Questions

Is Clock Seconds free?
Clock Seconds is free to download, with in-app purchases available.
Is Dual Flip Clock free?
Dual Flip Clock is free to download, with no in-app purchases.
Which has better reviews, Clock Seconds or Dual Flip Clock?
Clock Seconds and Dual Flip Clock are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.
Do Clock Seconds or Dual Flip Clock have ads?
Neither Clock Seconds nor Dual Flip Clock shows ads.
Which is updated more often, Clock Seconds or Dual Flip Clock?
Clock Seconds ships an update every 4 weeks, and Dual Flip Clock every 10 days. Most recently, Clock Seconds was updated on October 2, 2026 and Dual Flip Clock on September 18, 2026.

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