Math Flashcards: Number Nimbus
Smart math flashcards for kids
Free
Transform Math Practice into an Adventure Your Kids Will Love!
Number Nimbus makes mastering math as engaging as playing their favorite game. Using scientifically-proven spaced repetition, our app adapts to your child's learning pace, ensuring they build rock-solid math foundations while having fun.
WHY PARENTS LOVE NUMBER NIMBUS
• Smart Learning System - Our algorithm shows problems at the perfect time for maximum retention
• Builds Confidence - Kids succeed more because the app adapts to their individual pace
• No More Math Anxiety - Gentle progression from easy to challenging keeps frustration at bay
• Screen Time That Counts - Finally, an app parents can feel good about
• Works Offline - Perfect for car rides, waiting rooms, or anywhere
FEATURES THAT MAKE MATH FUN
ADAPTIVE DIFFICULTY
The app learns what your child knows and adjusts automatically. Struggling with 7+8? It'll show up more often. Mastered 3+2? It appears less frequently. Every child gets their perfect challenge level.
FOUR CORE SKILLS
• Addition - From simple sums to multi-digit challenges
• Subtraction - Build confidence with take-away problems
• Multiplication - Master times tables the smart way
• Division - Conquer sharing and grouping with ease
PRACTICE MODES THAT MOTIVATE
• Smart Review - Personalized daily practice based on what needs work
• Timed Challenge - Race against the clock for extra excitement
• Endless Mode - Keep going as long as they want to learn
REAL-TIME PROGRESS
• See accuracy improve session by session
• Track cards mastered vs. still learning
• Celebrate streaks and achievements
• Watch confidence grow with visual progress
THE SCIENCE BEHIND THE FUN
Number Nimbus uses the FSRS (Free Spaced Repetition Scheduler) algorithm - the same technology used by medical students and language learners worldwide. But we've made it kid-friendly:
• Problems appear just before they'd be forgotten
• Correct answers space out review times
• Missed problems come back sooner for reinforcement
• Every session is optimized for long-term retention
DESIGNED FOR YOUNG LEARNERS
• Big, colorful buttons perfect for small fingers
• Clean, distraction-free interface
• Instant feedback with encouraging animations
• No ads, no in-app purchases, no distractions
• Works great on iPhone and iPad
PERFECT FOR:
• Ages 5-12 (adjusts to any skill level)
• Homework help and extra practice
• Summer learning to prevent skill loss
• Building speed and accuracy
• Homeschooling supplement
• Special needs learners who benefit from repetition
GAMIFICATION THAT TEACHES
Unlike typical math games that focus on entertainment, Number Nimbus prioritizes learning outcomes:
• Progress feels like leveling up in a game
• Mistakes are learning opportunities, not failures
• Success is measured by mastery, not speed
• Rewards come from understanding, not points
PARENT-FRIENDLY FEATURES
• No account required - just download and start learning
• No subscriptions - one purchase, unlimited learning
• Privacy focused - all data stays on your device
• Export progress reports for teachers or tutors
• Multiple child profiles on one device
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
• per deck and global daily max review settings
The developer, Patrick Michalina, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Snow Tree LLC
- Size
- 2.3 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Snow Tree LLC. All rights reserved.