Comparison

20 Girls Clock vs Strange Clocks

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

Head to head
About

20 Girls Clock

Features
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This app is a digital & analog clock app featuring 20 girls. // how to operate // - The clock text, analog clock, and girl images can be moved with your finger. - You can also adjust the size of the letters by pressing buttons such as "1X" and "2X". - The analog clock and the image of the girl can be enlarged or reduced with two fingers. - You can switch between 12-hour and 24-hour displays. // setting mode // - Touching the clock character switches to the setting mode. - In setting mode, the date can be changed to various formats by touching it. - It can also sound a time signal at 0 minutes of every hour, and there are 78 different tones to choose from. // Background // - There are 30 backgrounds to choose from, and they can be set to change automatically every hour. - You can also set the background to change correspondingly in the evening and at night. // Miscellaneous // - Rotation of the screen in portrait and landscape mode is supported. - The girl's image changes between two different images every 10 minutes. These are the main functions and operations of this app. We hope you enjoy it!

About

Strange Clocks

Features
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Strange Clocks turns "what time is it?" into a small daily puzzle. Instead of one clock face, you get 15, each a different, real way humans (and machines) have told time throughout history: from a Cold War-era German clock made of lamps to the way a resistor's color bands encode a number. Every clock is stranger than the last, but none of them stay strange for long. Each one ships with a short animated guide that highlights exactly what to read and when, plus a live calculation line so you can watch the math happen in real time. WHAT'S INSIDE - 15 unusual clocks: Berlin Clock, Word Clock, Binary Clock, Cistercian Clock, Fibonacci Clock, Tix Clock, Hex Clock, Maya Clock, Moon Clock, Polar Clock, Resistor Clock, Decimal Time, Internet Time, Roman Hours, and the Prague Orloj. - An animated how-to-read guide for every single clock, no exceptions. - Widgets for Home Screen, Lock Screen, and StandBy, in small and medium sizes. - Clock Wall mode: turn your iPhone, or the inner display of iPhone Duo, into a live wall of clocks, screensaver-style. - 10 languages: English, Spanish, Simplified Chinese, Japanese, German, French, Brazilian Portuguese, Russian, Korean, and Italian. ONE CLOCK ON US Pick any clock as your gift and keep it free, forever: live in the app, on your widgets, and in StandBy. Every how-to-read guide is free for all 15. Want them all? A single one-time purchase of $1.99 unlocks every clock. No subscription, no recurring charges, no ads, and no tracking, ever. PRIVACY Strange Clocks doesn't collect your data. The one place it asks for location, to compute local sunrise and sunset for the Roman Hours clock, is used entirely on your device and never leaves it. Fifteen clocks. One phone. Zero reasons to know what time it "normally" is.

Screenshots

20 Girls Clock4 screens
Strange Clocks4 screens

Verdict

The call

The clearest difference is ads: Strange Clocks at none against 20 Girls Clock's shown. Strange Clocks also leads on update cadence (every 3 days vs fortnightly). 20 Girls Clock's advantage is iOS requirement (12.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. 20 Girls Clock sells 1 one-off in-app purchase and Strange Clocks sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

20 Girls Clock ships an update fortnightly, Strange Clocks every 3 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

Scorecard3 real differences ยท 3 level
20 Girls Clock versus Strange Clocks: the parameters behind the verdict, then further details
Parameter20 Girls ClockStrange Clocks
PriceFreeFree
Update frequencyFortnightlyEvery 3 days โ€” better
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS12.0 โ€” better17.0
Further details โ€” not scored
Size35 MB9 MB
Age rating4+4+
DeveloperMihoko ArakiKIP Networks

In-app purchases

1 purchases

20 Girls Clock

One-time1
  • Girls Clock with no ads$1.99
1 purchases

Strange Clocks

One-time1
  • Unlock all 15 clocks$1.99

Questions

Is 20 Girls Clock free?
20 Girls Clock is free to download, with in-app purchases available.
Is Strange Clocks free?
Strange Clocks is free to download, with in-app purchases available.
Do 20 Girls Clock or Strange Clocks have ads?
20 Girls Clock shows ads; Strange Clocks does not.
Which is updated more often, 20 Girls Clock or Strange Clocks?
20 Girls Clock ships an update fortnightly, and Strange Clocks every 3 days. Most recently, 20 Girls Clock was updated on November 7, 2026 and Strange Clocks on November 10, 2026.

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