Boncuk: Flash Anzan Arithmetic
Mental math practice for kids
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Numbers flash. Your kid does the math in their head. Stars light up. The Japanese flash anzan technique on iPhone and iPad. Ages 7 to 11. First 10 levels free.
Numbers flash on screen. Your child adds, subtracts, multiplies, divides in their head. They type the answer. They earn a star.
Boncuk brings the Japanese flash anzan technique to iPhone and iPad for kids ages 7 to 11. It is mental arithmetic practice, not a game with educational filler. A tool with a personality.
WHY FLASH ANZAN
Flash anzan is a Japanese mental calculation method born out of the soroban and abacus tradition. Numbers flash one at a time on the screen. The child captures each number visually and performs the arithmetic in their head. No paper, no pencil, no calculator. Just the child's mind and accelerating numbers.
Five to fifteen minutes a day measurably builds mental calculation speed. This is not a replacement for school math. It is a complement.
HOW IT WORKS
1. Pick a mode: Addition, Subtraction, Multiplication, Division, or Mixed.
2. Numbers flash one at a time at the level's pace.
3. Enter the answer on the keypad.
4. A correct answer earns a star toward three.
Each level has three rounds. Each round earns one star. Replay any level to chase the third star. As you advance, numbers flash faster and more of them appear.
PRACTICE MODES
- Quick Addition
- Quick Subtraction
- Quick Multiplication
- Quick Division
- Mixed mode, unlocks after 60 stars
100 levels per mode. 500 sessions total.
DESIGNED FOR KIDS
- No ads
- No third-party tracking
- No third-party analytics SDKs
- No social features, chat, user-generated content
- No streak guilt, no penalty for taking a day off
- No slot machine combos, jackpots, or coin shower animations
- Purchase, settings, and progress reset are behind a parent gate
ACCESSIBILITY
- Universal app for iPhone and iPad
- Turkish and English
- Full VoiceOver support
- Dynamic Type for larger text
- Reduced Motion respected
- iCloud sync across devices
PREMIUM
The first 10 levels in every mode are free. That is 50 free sessions to start. Premium unlocks all 500 levels and the Mixed mode.
- Weekly subscription with a 3-day free trial, then auto-renews at the local weekly price shown in the app.
- Lifetime: one-time purchase, no recurring charges.
Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your Apple ID account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your App Store account settings after purchase. Any unused portion of the free trial period will be forfeited when the user purchases a subscription.
PRIVACY
Boncuk does not collect personal information from your child. Practice progress is stored on your device and synced through your iCloud account if available. No ads, no third-party analytics.
Privacy Policy: https://boncuk.creativefactory.tr/en/privacy
Terms of Use: https://boncuk.creativefactory.tr/en/terms
Contact: hi@creativefactory.tr
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Oguzhan Kayan, 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
- Provider
- Oguzhan Kayan
- Size
- 10.6 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English and Turkish
- Age Rating
4+
- 4+
- Made For Ages 6–8
- In-App Purchases
Yes
- Boncuk Weekly USD 3.99
- Boncuk Lifetime USD 29.99
- Copyright
- © 2026 Creative Factory