Addition and Subtraction is a browser extension that helps you practice simple addition and subtraction expression. It is like a quiz extension.

FEATURES

• Quick random expressions
• Easy, Medium, Hard, and Custom modes
• Addition, Subtraction, or random operations
• Save user settings to the cloud for access from other devices.
• Leaderboard
• Dark/Light theme
• Open-source

if you need more feature on this app, highly requested to create an issue on our GitHub repository https://github.com/biplobsd/as/issues tab.

Read more: https://github.com/biplobsd/as