Product · Personal Finance
Trackie
Real-time financial insights for personal spending and savings, with encryption and automated backup.
6 views · Last updated September 15, 2026
Balance
Saved
Insights
Overview
Real-time financial insights for personal spending and savings, with encryption and automated backup. Built with MongoDB, Express, React, Node.js.
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.
The Approach
- 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.
Key Engineering Decisions
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.
Results
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.