Sumbee: Kids Math Practice

Nikolai Poriadin

About this app

Math facts practice for kids: addition, subtraction, multiplication and division flashcards your child can start on their own, in one tap.

Sumbee is a simple arithmetic drill for kids aged 5 to 12. Pick how big the numbers go, which operations to practice and how many cards, then tap Start. Your child answers each card on a big keypad and sees their score and time at the end. The next day, their settings are remembered: open the app, tap Start.

MADE FOR DAILY SCHOOL PRACTICE
• Addition, subtraction, multiplication and division, in any mix
• Numbers up to 5 for beginners, up to 100 for older kids
• Multiplication and division stay within the times tables, up to 12 × 12
• 25, 50, 75 or 100 cards per session
• Fits kindergarten through 6th grade, from first sums to mental math with the times tables

A SMART DECK, NOT RANDOM NUMBERS
Cards feel fresh every time. Your child never sees the same card twice in a session or gets 6 + 5 right after 6 + 4, and throwaway cards like × 1 are rare. Answers are never negative, division always comes out even, and there's no dividing by zero.

GENTLE, NOT PUNISHING
A wrong answer gets a friendly "Are you sure?" and a second try. No buzzers, no red flashes, no sounds.

PERSONAL
Your child types their name once, and every session ends with their own score: "Jenny's score: 21 / 25".

SAFE BY DESIGN
• Free, with no ads and no in-app purchases
• No accounts and no sign-up
• Works fully offline
• Collects no data: the name and settings stay on the device and aren't included in backups
• No streaks, coins or leaderboards. The score and time are the reward.

FOR PHONES AND TABLETS
Works on phones and tablets, with a layout that grows to fill a big screen. In English, Spanish, Portuguese and Ukrainian, following your device's language.

Built by a parent for their own 2nd grader's daily homework, now shared with every family.

What’s new

Sumbee is now on Google Play for everyone!
• Addition, subtraction, multiplication and division flash cards
• Numbers up to 5 for beginners, up to 100 for older kids
• Times tables up to 12 × 12
• Gentle second try on mistakes
• Works offline. No ads, no accounts, no data collected
• Now in Spanish, Portuguese and Ukrainian, with tablet support