auxofund

“A finance app that keeps your data only on your device”

A personal finance app where your data never leaves the device. Multiple wallets, budgets, goals, investments, month-end forecasts and OCR for payment slips.

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auxofund

RoleProduct design · Full-stack

Period2024 — 2026

TypePWA · v1.2

721commits

138test files

12+apps you can import from

0data sent to a server

auxofund

01 / 03

Home

Totals across all currencies, daily Safe to Spend, a month-end balance forecast and recent transactions.

02 / 03

Insights

Money calendar, income and expenses, savings rate and average daily spending.

03 / 03

Assets

Net worth, split into wallets and investments.

Architecture

Data never leaves the device

Every layer runs on the user’s device. Data is encrypted at the core, and outside data can only flow in.

RING 1

PWA shelloffline-first · service worker

RING 2

UI · Next.js 15home · insights · assets · import

RING 3

State · Zustandwallets · budgets · goals

RING 4

SecurityPBKDF2 per profile

CORE

IndexedDBencrypted · stays on device

App03

Next.js 15

PWA shell

TypeScript

Tailwind 4

design system

Data02

Zustand

state

Dexie

IndexedDB wrapper

Quality01

Vitest

138 test files

Platform01

PWA

install · offline

Next project · 04 / 05

“See how much AI quota each account has left, from the menu bar”

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