Comparison

Clock Twirling vs KnowClock

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

Head to head
About

Clock Twirling

Features
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Master analog clocks through interactive play. Drag the hour and minute hands to observe their linkage and intuitively understand the relationship between hours and minutes. Test your learning with randomized quizzes, progressing from simple times to precise readings. Designed for children, the intuitive drag interface and visual feedback help kids easily grasp time concepts through hands-on exploration.

About

KnowClock

Features
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KnowClock takes children aged 2-8 from reading a clock face to actually using time, across seven levels that build on each other. - Full Chinese voice guidance: kids can play on their own, no reading required - Age-based difficulty: whole hours for toddlers, half hours next, then five-minute precision and time math - Works fully offline. No ads, no third-party SDKs, no personal data collected - Every purchase and settings entry is behind a parent gate Seven levels 1. Recognise: learn the hour, minute and second hands 2. Listen: hear the time spoken, pick the right clock 3. Match: connect times to daily routines like breakfast and bedtime 4. Challenge: ten mixed questions scored by accuracy 5. Set the hands: drag both hands to the correct position 6. Find the time: read a description, pick the matching clock 7. Calculate: work out elapsed time and end times, bridging into primary school maths Time-sense training Six activities build an intuition for how long a minute really is: hourglass, one-minute challenge, beat challenge, time race, scene countdown and head-to-head duel. My Schedule A 24-hour ring shows the whole day at a glance, so children can see what comes next. Assessment and weekly reports Fifteen questions measure five skills, shown on a radar chart. Every week you get practice time and stars earned, ready to save and share. Printable worksheets Age-appropriate exercises you can print and practise on paper. Peace of mind for parents - Daily time limit with a rest reminder - Parent gate with a maths challenge blocks accidental purchases - Fully offline, no sign-in - No personal data collected, no advertising identifier Who it is for Ages 2-4: start with what a clock looks like Ages 4-6: read whole and half hours Ages 6-8: master five-minute precision and time calculation Privacy Policy: https://github.com/wangzz/md-doc/blob/main/KnowClock/PRIVACY_POLICY.md Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Clock Twirling2 screens
KnowClock4 screens

Verdict

The call

The clearest difference is ads: KnowClock at none against Clock Twirling's shown. KnowClock also leads on iOS requirement (16.0 vs 18.6). Clock Twirling's advantage is update cadence (weekly vs fortnightly). 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. Clock Twirling sells 1 one-off in-app purchase and KnowClock sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Clock Twirling ships an update weekly, KnowClock fortnightly. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

Scorecard3 real differences ยท 3 level
Clock Twirling versus KnowClock: the parameters behind the verdict, then further details
ParameterClock TwirlingKnowClock
PriceFreeFree
Update frequencyWeekly โ€” betterFortnightly
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.0 โ€” better
Further details โ€” not scored
Size4 MB11 MB
Age rating4+4+
Developerzhenhua qinไธญๅ‘จ ็Ž‹

In-app purchases

1 purchases

Clock Twirling

One-time1
  • Full Version$0.99
3 purchases

KnowClock

Subscriptions2
  • ๆœˆ่ฎข้˜…$0.991 Month
  • ๅนด่ฎข้˜…3 Days trial$2.991 Year
One-time1
  • ็ปˆ่บซ่งฃ้”$4.99

Questions

Is Clock Twirling free?
Clock Twirling is free to download, with in-app purchases available.
Is KnowClock free?
KnowClock is free to download, with in-app purchases available.
Do Clock Twirling or KnowClock have ads?
Clock Twirling shows ads; KnowClock does not.
Which is updated more often, Clock Twirling or KnowClock?
Clock Twirling ships an update weekly, and KnowClock fortnightly. Most recently, Clock Twirling was updated on November 5, 2026 and KnowClock on November 9, 2026.

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