Most freelancer tools do one thing, so you end up with an invoicing app, a spreadsheet for expenses, a calendar somewhere else and a shoebox of receipts. FreelanceOS puts the whole job-to-job workflow in one place: the job goes in the calendar, becomes an invoice when it's done, and every expense along the way lands in the right tax box automatically.
Invoicing
Invoice creation in seconds
Turn a finished job into an invoice without retyping anything. Your clients, rates and job details are already there, so raising an invoice takes seconds rather than an evening at the end of the month. Quotes work the same way, and convert to invoices when the work is confirmed.
Getting paid
Overdue warnings and outstanding actions
Every invoice due shows a clear countdown to when payment's expected, and the moment one goes overdue your dashboard flags it with how many days it's been waiting. It also surfaces finished jobs you haven't invoiced yet and expenses you haven't billed on. It's a running list of money you're owed but would otherwise forget to chase.
Jobs & scheduling
Job tracking with a built-in calendar
Schedule jobs into the calendar, see your month at a glance, and keep every job's details, client and billing status in one record from booking to payment. Voice fill lets you say the job details out loud and the form fills itself.
Calendar sync
Google Calendar sync
Jobs you book in FreelanceOS appear in your Google Calendar automatically, and your personal Google events show alongside your jobs in the app. One calendar view, no double bookings, and no copying bookings between apps.
Expenses
Expense capture with AI receipt scanning
Photograph any receipt from your phone and the merchant, amount, date and category are filled in for you. Every expense is mapped to the correct self assessment category as it's captured, which is what makes tax time a download instead of a weekend.
Job costs
Expenses and mileage on the job
Add expenses and mileage straight onto a job in a couple of taps, and mark each one billable or not. Billable costs are recharged on the invoice automatically so nothing gets forgotten, and non-billable costs count against the job, so you see what each job actually made you, not just what you charged.
Subscriptions
Subscription tracker
Adobe, Microsoft 365, hosting, insurance, software you forgot you pay for: add your subscriptions once and see exactly what leaves your account every month. Most freelancers find £30 to £100 a month in subscriptions they'd stopped noticing, and every one of them is captured as a business expense.
Mileage
Mileage logging
Log business journeys as you go and your mileage claim builds itself through the year, calculated at HMRC's approved rates. For anyone driving between jobs, venues or client sites, this is usually the biggest tax deduction people under-claim.
Forecasting
Income forecasting
Because your booked jobs live in the app, FreelanceOS can show you the revenue already committed for the months ahead, not just what you've invoiced. Feast-and-famine is the freelancer's curse; seeing the famine coming two months early is how you fix it.
Dashboard
Business statistics at a glance
Income, expenses, profit, outstanding invoices and year-to-date totals on one dashboard. The numbers an accountant would tell you quarterly, visible every morning.
Clients
Client overview
Every client in one place: their jobs, full invoice history, and what they've been invoiced, paid and still owe. Each client gets a payment score based on how quickly they actually pay, so you know who settles same-week and who needs the polite chaser before you take the next booking.
Tax & MTD
MTD-ready tax reports
Every expense category maps to the correct SA103 box, and your Making Tax Digital quarterly report is a one-click download ready for free bridging software. We've documented the whole process: see how to submit your quarterly update in under 10 minutes and our comparison of the best free MTD software.
Try the whole thing free
Every feature above, free for 14 days. Most freelancers create their first invoice in minutes.
Start Free Trial. 14 Days FreeNo credit card. No setup fee.
Built by a freelancer
FreelanceOS is built by David, a working freelancer in the UK events industry, after 20 years of doing this the hard way. If you work job to job, it was built for exactly how you work.