← Work/04 of 10/AI-driven

A family expense tracker that reads UPI payment screenshots on-device and charts where the money goes.

RoleDesigner & developer
CompanyIndependent
TeamSolo + AI
Timeline2026
StatusIn daily use · on my phone
(01)

Overview

I wanted a family budget app without typing every expense. Share a GPay or PhonePe screenshot and PaisaPal reads the amount on the phone itself, with no AI API. Then tag it by category and family member.

(02)

My role

Designer & developer
  1. 01Defined the product: screenshot-first entry, categories, family members and savings tracking.
  2. 02Chose React Native with Supabase, installed locally on my own phone.
  3. 03Built screenshot reading on-device without calling an AI API.
  4. 04Directed the build with Claude Code and reviewed every change.
(03)

How it was built

AI-driven

AI-driven build. I set the product rules and constraints (on-device only, no AI API); Claude Code did the implementation under review.

  1. Me

    Define

    Categories like rent, car service, groceries and milk, tagged by family member.

  2. Claude Code

    Build

    React Native screens, Supabase schema and on-device screenshot reading.

  3. Me

    Use

    Installed on my own phone and refined from daily use.

(04)

Key features

Screenshot → expense

Share a UPI screenshot from the gallery and the amount fills itself.

Family tagging

Every entry belongs to a category and a family member.

Money overview

Track salary, savings and investments alongside spending.

Charts

Weekly, monthly and yearly views.

(05)

Impact

0AI API calls — all on-device
3Chart views: week, month, year
(06)

Screens

7 of 7 added
01Home — what's left this month, lent and borrowed, and where it went
02Add entry — from a UPI screenshot, a bill photo or by hand
03Every entry gets a category: rent, milk, fuel, EMI and more
04History — search by payee, note, amount or family member
05Insights — income vs spend by week, month or year, against budgets
06Categories with optional monthly budgets
07Recurring entries, auto-add from bank SMS, and PDF or Excel export
(07)

Stack

Mobile

  • React Native
  • TypeScript

Backend

  • Supabase

AI workflow

  • Claude Code
(05) Next step — open to senior roles & freelance projectsLet’s
talk.