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product · personal finance
Trackie
Real-time financial insights for personal spending and savings, with encryption and automated backup.
- MongoDB
- Express
- React
- Node.js
36 views · updated September 15, 2026
Trackie
the problem
Personal finance data is sensitive by default, so a tracking tool needs to treat security and durability as core requirements, not add-ons.
what I did
- Built a MERN-stack application (MongoDB, Express, React, Node.js) for tracking personal financial activity.
- Delivered real-time financial insights to users as their data changes.
- Added encryption for stored financial data and automated backups to protect against data loss.
decisions that mattered
Architecture
Full MERN stack — Express/Node.js API, MongoDB storage, React client.
Security
Financial data encrypted at rest, with automated backups guarding against loss.
Real-time insights
Financial summaries update as new activity comes in, instead of on a fixed batch schedule.
what happened
1,500+Users
what I learned
For data this sensitive, encryption and backups aren't features to add later — they shape the schema and data flow from day one.