PocketMath

A clean and modern calculator app, developed using Flutter. Get quick results for basic math with a simple user interface. The app performs basic mathematical operations like addition, subtraction and multiplication.

Features

• Addition, subtraction, multiplication operations.
• Handles input errors and incomplete expressions gracefully.
• Operator replacement when changing operators mid-expression.
• iOS-style UI with rounded buttons and smooth gradients.
• Display updates reactively to reflect inputs and error states.
• Basic operations in the ViewModel are unit tested to ensure correct calculation behavior.

Tech Stack

• Language: Dart
• Framework: Flutter
• Architecture: MVVM
• State Management: Provider (ChangeNotifier)
• UI: Flutter Widgets (Column, Row, Expanded, Container, InkWell)
• Platform Support: Android (minSdk 31, targetSdk 34), iOS (15.6+)

Requirements

• Flutter 3.35.1 or later
• Dart 3.9.0 or later
• Android: minSdk 31, targetSdk 34
• iOS: iOS 15.6 or later

Future Improvements

• Add division and decimal point support.
• Implement continuous calculations like iOS (e.g., repeated = presses).
• Add history view to track past calculations.
• Introduce unit tests and widget tests for robust regression coverage.
• Responsive layout for landscape mode.
• Increase the limit of digits.