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Phone 18 Calculator — Receipt Scanner & Math Notes
Monetized Android productivity utility with 17,000+ downloads. Features an iOS-inspired fluid interface, scientific math engine, Math Notes, real-time receipt OCR scanner, and financial tools.
Built by Augustine Cobbold
Kotlin
Jetpack Compose
ML Kit (OCR Vision)
Android SDK
Google AdMob
In-App Billing
Room DB
Problem
Standard mobile calculators lack integrated receipt OCR scanning for expense tracking, receipt itemization, and real-time equation evaluation directly from physical receipts.
Solution
Built a lightweight, beautifully styled Android calculator app combining fluid Glass UI themes, ML Kit text recognition for receipt scanning, financial tip/tax splitters, and AdMob monetization.
Architecture
Receipt Scanner & Math Engine
Gallery