Comparison

Smart Clocks vs KnowClock

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

Head to head
About

Smart Clocks

This educational app helps children learn about clocks and time through interactive exercises. It features engaging activities for practicing time-telling, writing, and understanding time intervals with voice and text instructions.

Highlights
  • Observe time changes with interactive hands
  • Practice writing time from clock indications
  • Draw clock hands from digital displays
  • Calculate time before or after a given period
  • Determine time between two clock indications
  • Text and voice instructions for all modules
  • Animation demonstrations of clocks
Features
Read full description

This is a app that helps kids understand clock and time. Practice time questions in an interactive way through a cute interface. 1 Observe the time changes by turning the hour and minute hands. 2 Practice writing the time through the clock indication. 3 Practice drawing the clock hands through digital display. 4 Write the target time before or after a period of time. 5 Write the time between two clock indications. Each module has text and voice instructions. The correct answer will be given for each question, which is convenient for checking. Some questions will give animation demonstrations of clocks.

About

KnowClock

Features
Read full description

KnowClock helps children aged 2-6 learn to read analog clocks and tell time through seven progressive learning levels. Seven progressive learning levels: recognize clock parts, listen to time, match scenes with time, quiz challenge, set clock hands, find the time, calculate duration Chinese Mandarin voice guidance throughout, kid-friendly narration, children can play independently Age-adaptive difficulty: identify parts for ages 2-3, whole-hour recognition for ages 4-5, scene-based reasoning and time calculation for age 6 Parent Center: set usage time lock, review learning progress, manage subscription Parent Gate: math question verification prevents children from accidentally accessing purchases or settings Works offline: no network requests, no ads, no third-party SDKs, no user data collected Kids Category compliant: meets all Apple Kids Category requirements 【Seven Core Game Levels】 Level 1 - Recognize: A friendly clock mascot points to clock parts (hour hand, minute hand, second hand). Voice announces "This is the minute hand." Children tap the correct part for feedback. Includes 20 questions. Level 2 - Listen: Voice announces the current time. Children listen to Clockie speaking the time, then select the correct clock face from 4 candidates. Includes 30 questions, focusing on whole and half hours. Level 3 - Match: Daily scene images (breakfast, going to kindergarten, nap time) shown above. Four clock faces below. Drag or tap to pair each scene with its matching time. Includes 20 questions. Level 4 - Quiz: 10-question comprehensive challenge mixing all three previous level types. 3-life system. Rated 1-3 stars based on time and accuracy. Level 5 - Set the Clock: Children drag the hour and minute hands to position them correctly according to the spoken time. Hands-on practice building time-reading intuition. Includes 6 questions. Level 6 - Find the Time: Children see a written time description and choose the matching clock face from 4 options. Mixes reading-digital and memory-recall styles. Includes 8 questions. Level 7 - Calculate Time: Two clocks show a start and end time. Children calculate the duration between them or figure out the end time by adding a duration. Prepares kids for real-life time problems. Includes 8 questions. 【Parent Features】 - Age group settings (ages 2-3 / 4-5 / age 6) - Single-session time lock (15 / 30 / 60 minutes) - Level unlock status and error review - Restore purchases, privacy policy, contact us 【Who Is This For】 - Children aged 2-6 (to be used under parental guidance) - Parents who want their children to systematically learn clock recognition - Kindergarten teachers (preschool math) 【Contact Us】 If you have any questions or suggestions, please contact the developer through the App Store app page "Contact Developer". 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

Smart Clocks4 screens
KnowClock4 screens

Verdict

The call

The clearest difference is in-app purchases: Smart Clocks at none against KnowClock's 3. Smart Clocks also leads on iOS requirement (12.0 vs 16.0). KnowClock's advantage is update cadence (every 11 days vs every 4 weeks). On price, ads 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

Both are free to download. KnowClock sells 3 in-app purchases, starting at $0.99 per month. Smart Clocks asks for nothing beyond the download.

UpkeepUpdate frequency

Smart Clocks ships an update every 4 weeks, KnowClock every 11 days. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 6 level
Smart Clocks versus KnowClock: the parameters behind the verdict, then further details
ParameterSmart ClocksKnowClock
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size86 MB8 MB
Age rating4+4+
DeveloperYan Xu中周 王

In-app purchases

None

Smart Clocks

No in-app purchases

3 purchases

KnowClock

Subscriptions2
  • 月订阅$0.991 Month
  • 年订阅3 Days trial$1.991 Year
One-time1
  • 终身解锁$2.99

Questions

Is Smart Clocks free?
Smart Clocks is free to download, with no in-app purchases.
Is KnowClock free?
KnowClock is free to download, with in-app purchases available.
Do Smart Clocks or KnowClock have ads?
Neither Smart Clocks nor KnowClock shows ads.
Which is updated more often, Smart Clocks or KnowClock?
Smart Clocks ships an update every 4 weeks, and KnowClock every 11 days. Most recently, Smart Clocks was updated on September 19, 2026 and KnowClock on September 23, 2026.

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