Case Study

Thanks Note

A mobile application for recording daily gratitude and emotions with offline-first architecture, real-time synchronization, and advanced user management.

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Project Overview

Thanks Note is an Expo-based mobile app for recording gratitude and daily emotions. It combines offline-first local usage with cloud synchronization, anonymous-to-authenticated user migration, 13 emotion categories, statistics, calendar views, push notifications, and production deployment on Google Cloud Platform.

Key Challenges

Implementing offline-first data handling with reliable synchronization
Migrating data from anonymous users to authenticated accounts
Designing a 13-category emotion tracking model
Managing push notifications across individual, group, and broadcast flows

Key Outcomes

Released a production mobile app for gratitude and emotion records
Built anonymous-to-authenticated account migration
Added emotion statistics, activity patterns, and calendar views
Deployed backend services with Docker, Terraform, and GCP Cloud Run

Technologies

React NativeExpoTypeScriptNestJSPostgreSQLTypeORMZustandClerkGCP Cloud RunTerraform