Case study

TBOU Notes

Feature-rich notes app with calendar integration, OCR, and rich text editing.

Overview

TBOU is a feature-rich notes and journaling app that combines powerful text editing capabilities with seamless cloud synchronization. The app serves as a complete productivity solution for capturing thoughts, managing to-dos, and organizing information with rich text formatting and multimedia support.

Project Details

Role: Senior iOS Developer

Timeline: Jan 2022 - Aug 2023

Platform: iOS

Productivity & Note Taking

TBOU Notes — Consumer Apps | Technical Portfolio

Key Technical Challenges

Core engineering challenges tackled during application development:

Rich text formatting with NSMutableAttributedString supporting multiple attributes simultaneously
OCR integration for accurate text extraction from images in various lighting conditions
Complex drag-and-drop between table views and collection views with smooth animations
Offline-first sync logic preventing conflicts when same note edited on multiple devices
Calendar events integration with proper permission handling and iOS system integration

Features & Technical Capabilities

Engineered capabilities and platform functionality:

System Capabilities

Integrated Calendar Events/Reminders with local and remote notifications
Integrated CoreData for storing notes locally with REST API sync via Alamofire
Built multiple row selection with drag-and-drop between table and collection views
Implemented real-time text formatting using NSMutableAttributedString (highlight, bold, headers, bullets)
Integrated OCR scanning to extract text from images and add to notes
Built intelligent link detection system while typing
Implemented biometric login (Face ID/Touch ID) for secure access
Created share functionality for collaboration with other users