Cash Tracker Web App with No Backend

2025-01-01

A working web app with no server, no account, no friction.

Built a cash tracking tool for tradespeople and small business owners. All data lives in the browser. No signup, no server costs, no complexity.

The challenge

The target users were contractors, tradespeople, and small business owners who handle cash. They were using Excel files or paper. The tool needed to be faster than a spreadsheet, work on any device including mobile, require zero setup, and never lose data. A backend would add friction they would not tolerate.

Approach

• Decided on browser-only architecture with localStorage. No account, no sync, no server needed.
• Full web app: log cash in and out, add descriptions per transaction, track a separate treasury reserve
• Mobile-first layout so it works on a phone at a job site as well as a desktop in an office
• Landing page built to explain the product clearly: who it is for, what problem it solves, how it works
• Single-focus design: cash only, no invoice generation, no expenses splitting, no multi-currency noise

Results

• 0 — backend needed. Fully browser-based, no server costs.
• 0 — signup required. Works instantly on any device.
• 2 — deliverables: full web app + landing page
• 100% — offline capable. No internet required after first load.

Tools used

HTML, CSS, JavaScript, LocalStorage, Web App