Sain (Smart AI Notes) was built to rethink personal productivity by combining note-taking, task management, and AI assistance into a single intelligent workspace. Designed for modern users, the platform transforms simple notes into a collaborative experience with AI-powered suggestions, content generation, and smart organization.
We led the complete mobile application development, crafting a polished cross-platform experience with rich note editing, to-do management, AI-powered writing assistance, and a curated prompts system. Users could format text, attach images, create checklists, manage tasks, and seamlessly import AI-generated ideas directly into their workflow.
Behind the scenes, we engineered a scalable cloud architecture using Firebase for authentication and data storage, integrated OpenAI for intelligent assistance, and implemented subscription-based monetization through Stripe, Apple App Store, Google Play Billing, and RevenueCat.
The result was a premium AI productivity application that brought together the emerging capabilities of generative AI with the everyday utility of notes and task management—creating an intelligent companion that helps users think, organize, and create more effectively.