Log the day. Send the invoice.
Know who owes you.
BillSlate is a private, offline-first invoicing app for freelancers who charge by the day. Turn unbilled days into a clean, bank-ready invoice PDF in a few taps and keep an eye on what's owed — no account, no subscription to a bookkeeping platform, and no spreadsheet.
Everything a day-rate invoice needs
Three-Tap Day Logging
Pick a client, pick a date (or several at once) on the calendar, confirm. The day is logged at that client's rate — frozen at that moment, so a later rate change never silently re-prices work you already logged.
Invoices That Don't Change
Build a draft from any client's unbilled days, preview it, then issue it. Once issued, an invoice is permanent. Need to fix something? Void it and issue a linked replacement.
Know Who's Overdue
Aging buckets (Current, 1–30, 31–60, 61+ days) and a sortable chase list keep you from having to remember who owes you. Pro adds optional overdue reminders.
Handles Real Tax Situations
Add one or more named tax lines per invoice — each rounded independently, the way multi-tax jurisdictions actually expect. Pro adds a one-tap accountant CSV export and a tax set-aside estimate.
Built for Phone and Tablet
The same app adapts from a phone's bottom nav to a tablet's side rail and bento-style dashboard — light and dark, in English, Spanish, Portuguese (Brazil), French (Canada), and German.
Private by Design
Everything lives on your device. No developer-run server, no analytics SDK, no ad SDK. Back up your ledger to an encrypted, password-protected file any time, for free.
Free, no catch
Start invoicing
- 1 active client, up to 10 logged days, 1 active invoice
- Full PDF export and the basic aging view
- Home-screen widget
- Unpaywalled backup, restore, and delete
Subscription or lifetime
- Unlimited clients, days, and invoices
- Partial payment tracking and overdue reminders
- Client statement PDFs and accountant CSV export
- Tax set-aside estimate and a widget with real totals
BillSlate is a billing and record-keeping tool. It is not an accounting, bookkeeping, or tax-preparation product, doesn't connect to a bank, and gives no legal or tax advice. Pro is available as a monthly or yearly subscription, or a one-time Lifetime purchase — manage or cancel a subscription anytime from your App Store or Google Play account.