Hourbook: Time & Invoice Maker

Othman Tarahbi

In-app purchases

About this app

Hourbook is the simple, offline way for freelancers and hourly professionals to track billable time and turn it into a clean, professional PDF invoice in one tap. No account. No ads. Your data stays on your device.

Built for tutors, coaches, consultants, developers, designers, tradespeople, and anyone who bills by the hour.

Your first three invoices are free, and they are the real thing: your own logo, your own colours, and no Hourbook mark anywhere on them. What your client sees is never gated.

WHY HOURBOOK
- Start a timer for any client at their hourly rate, or add time by hand.
- A short guided tour walks you through your first invoice, and you can skip it.
- Turn unbilled hours into a polished PDF invoice in seconds.
- Works completely offline. Nothing is uploaded, ever.
- Put your bank details, IBAN, PayPal or payment link on the invoice, so you get paid.
- Invoice in your client's language, from your own country's conventions.

TRACK TIME THE EASY WAY
- One tap to start and stop the timer.
- Set a rate per client or per project.
- Add manual entries for work done away from your phone.
- See today, this week, and unbilled totals at a glance.
- Round time to the nearest 6, 15, or 30 minutes if you bill that way.

PROFESSIONAL INVOICES
- Group unbilled hours into itemized lines automatically.
- Add fixed fees and expenses.
- Apply tax and discounts.
- Choose how invoices are numbered: INV-0001, 2026-0001, or a format of your own.
- Set issue and due dates, a reference or PO number, and notes.
- Export a clean PDF and share it by email, messaging, or anything else.
- Mark invoices as sent or paid and see what is still outstanding.

NEVER LOSE YOUR HOURS
- Full backup and restore, built in and free.
- Moving to a new phone is easy. Back up, restore, done.
- Everything stays on your device, under your control.

CLIENTS AND PROJECTS
- Keep a tidy list of clients with their contact details and rates.
- Organize work into projects with their own rates.
- See each client's unbilled total and invoice history.

PRIVATE BY DESIGN
- No sign up and no account.
- No analytics and no tracking.
- Optional app lock using your device biometrics.

WORKS IN YOUR LANGUAGE
- English and Dutch, with dates and amounts written the way your country writes them.
- Set a different invoice language per client, so you can work in one language and bill in another.
- Country presets for the rows your invoice needs, whether that is BTW and KvK, a VAT number, or an EIN.

HOURBOOK PRO
The free version gives you unlimited time tracking, unlimited clients, full backup and restore, and your first 3 invoices.

Everything your client sees stays free: your own logo, your own colours, your payment details, and a clean PDF with no Hourbook mark on it. We do not hold your invoice hostage.

Pro adds:
- Unlimited invoices
- CSV export for spreadsheets and your accountant

Pro is available monthly, yearly, or as a one-time lifetime purchase. Prices are shown in your own currency inside the app.

Perfect for freelancers, consultants, tutors, coaches, designers, developers, tradespeople, and anyone who bills by the hour.

Track your hours. Get paid. Keep it simple.

What’s new

Welcome to Hourbook 1.0.

The simple, offline way to track billable hours and turn them into professional PDF invoices.

- One-tap timer per client, plus manual time entry
- Turn unbilled hours into an itemized PDF invoice
- Clients and projects with their own rates
- Tax, discounts, invoice numbers, and notes
- Mark invoices sent or paid
- Full backup and restore, plus CSV export
- Optional app lock, light and dark themes

Everything stays on your phone. No account, no ads.