Oral Calculation

Oral Calculation is a simple, focused mental math practice app for children aged 6-12. No ads, no accounts, no internet required — just math.

FEATURES

- Four basic operations: addition, subtraction, multiplication, division
- Age-appropriate difficulty presets (6-7, 8-9, 10-11, 12+)
- Customizable number ranges for each operation
- Multi-operand expressions (2-4 numbers) with optional brackets
- Two input methods: numeric keyboard or handwriting recognition
- Adaptive layout: one question at a time on phone, full grid on tablet
- Built-in handwriting digit recognition powered by neural network (~98% accuracy)
- Wrong question review: redo weekly mistakes for targeted practice
- Progress tracking: accuracy, streaks, per-operation stats
- Seed sharing: generate identical question sets for classmates or siblings
- Dark mode support
- English and Chinese languages

DESIGNED FOR KIDS

- Clean, distraction-free interface
- No ads, no in-app purchases after download
- No account required
- All data stays on device — nothing is uploaded

PERFECT FOR

- Daily math practice at home
- Classroom quick drills
- Parents who want to track their child's progress
- Teachers sharing the same question set to the whole class