Wwebuildanyapp.ukDesign your app
All work
PrototypeFinance2026

Ledger

Invoicing, expenses and tax estimate for freelancers and one-person businesses.

Client:UK freelancers earning under £85k VAT thresholdIndustry:Solo and micro-business finance
Built in
12 days
Ledger
The problem

FreeAgent and Xero cost £30 a month and do ten times what a freelance designer needs. Most freelancers run on spreadsheets and panic in January.

What we built

A simple iOS / Android / web app that does the five things a one-person business actually needs: invoice, receipt capture, tax estimate, Stripe pay link, January export.

Outcome

Prototype shipped. Tax estimate accuracy validated against HMRC self-assessment.

How this one happened

The story behind the build.

The founder is a freelance illustrator who lost two days every January to her accountant. She wanted something that did just enough and got out of her way. We shipped a Next.js prototype with a Stripe pay link and an AI receipt scanner.

What's inside

Features that matter.

01

One-tap invoice from a saved client

02

Receipt photo with AI extract of amount and date

03

Tax estimate updated live as income comes in

04

Stripe pay link on every invoice

05

Self-assessment export ready for HMRC

06

Mileage tracker with HMRC-rate calculation

Stack

Built with.

Next.js 16FlutterStripeHMRC MTD API patterns