App info
- Installs
- 100+
- Category
- Educational
- Content rating
- Everyone
- Version
- 2.9
- Released
- Jan 31, 2026
- Last updated
- 2 Oct 2026
- In-app purchases
- No
- Contains ads
- Yes
- Promo video
- No
- Requires Android
- 7.0
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What's newin version 2.9
Five illustrated 2D avatars with unique animations. 41 cars with longer previews and lively race actions. Clear practice instructions, immediate success feedback, and smoother clock-hand controls. Audio controls on every page and improved narration. New Space Clock icon and improved phone layouts. Your progress and unlocks are preserved.
About this app
Learn clocks with Otterly, race cars and explore space. Learn and play offline.
Read full description
Learn to tell time with Otterly in Clock Master, a colorful clock-learning game with hands-on lessons, car races and space exploration. LEARN BY MOVING THE CLOCK Drag the hour and minute hands and see how they work together. Follow 11 guided chapters covering hours, minutes, reading time, AM and PM, the 24-hour clock, quarter and half past, adding and subtracting time, clock angles and moving-hand challenges. PRACTICE AT YOUR OWN PACE Clear instructions show what to do. Check your answer, see correct or try-again feedback, and move to the next question when you are ready. Replay spoken instructions or adjust music, sound effects and narration from the audio controls. RACE AGAINST THE CLOCK Put your time-telling skills to work in Time Race. Choose a difficulty, read the clock and answer questions to help your car race ahead. Earn coins and explore a collection of 41 animated cars, with colors and accessories to make your ride your own. EXPLORE SPACE Travel through an illustrated universe of planets, stars and other space objects. Pan around the map, discover facts and take on time questions along the way. MEET YOUR ANIMATED COMPANIONS Choose from five illustrated 2D avatars: Otterly, Time Robot, Clock Cat, Space Explorer and Time Wizard. Each has its own animated action. Preview characters in the shop and equip unlocked favorites to see them on your home screen. KEEP MAKING PROGRESS Return for daily challenges, earn stars and coins, and collect achievements. Clock Master supports everyday time practice at home, classroom learning and extra practice with more advanced clock questions. OFFLINE PLAY AND PARENT SETTINGS Core lessons and races work offline. Parent settings provide control over the learning experience. Music, sound effects and spoken guidance can be adjusted separately. ABOUT ADS No ads are shown during lessons or active races. Optional rewarded videos require an internet connection. Banner ads may appear on race menus, pause screens and results screens when online. Clock Master by Otterly Games. Built with ❤️ by a mom who believes every child can master the clock. Questions? Contact us: labmindsprint@gmail.com