Private by design
No account, no analytics, no tracking. Your invoices, customers and business details live only on your device.
Professional invoices & quotes. No subscriptions, no ongoing fees.
Slipstream Invoices is an offline-first invoicing app for small business. Build branded PDF invoices and quotes on your phone, send them to clients in a couple of taps, and keep every bit of your data on your device.
100% offline. No sign-up, no subscription service, nothing leaving your phone unless you send it.
Everything you need to bill clients — nothing you don't.
Branded PDF documents
Generate clean A4 invoices and quotes with your logo, accent colour, tax ID and payment details baked in.
Quotes that convert
Send a quote, then turn it into an invoice in one tap when the job is approved — no retyping.
Automatic numbering
Configurable prefixes and counters produce document numbers like INV-0001 and QTE-0007, always in sequence.
Customers & item catalog
Import clients straight from your contacts and keep a reusable catalog of items and rates to build documents fast.
Backups & CSV export
Export a full JSON backup you can restore on a new device, or a CSV of your documents for your records or accountant.
How it works
Step 1
Set up your business
Add your business name, tax ID, payment details, logo and regional tax preset once — every document picks it up automatically.
Step 2
Build an invoice or quote
Pick a customer, add items from your catalog, apply discounts and tax. Drafts autosave as you type.
Step 3
Preview the PDF & send
See the finished document instantly, then email it straight to your client or share it however you like.
Frequently asked questions
Quick answers about Slipstream Invoices. Can't find what you're looking for? Head to the support page or email us directly.
Contact supportDo I need an account or internet connection?
No. Slipstream Invoices works fully offline. There is no sign-up, no login, and no server — you can create and send documents anywhere.
Where is my data stored?
Everything — your business profile, customers, items, invoices and quotes — is stored on your device in the app's private storage. Nothing is sent to us; we don't run a backend.
How do I back up or move to a new phone?
In Settings you can export a full JSON backup through the share sheet, and restore it on any device running the app. Your data is also included in your normal iOS device backups.
Can I send a quote and turn it into an invoice later?
Yes. Saved quotes can be converted to invoices in one tap from the Documents tab — a new invoice number is assigned and nothing needs retyping.
Which countries and taxes are supported?
The app ships with regional presets for GST, VAT, sales tax and more (Australia, UK, EU, US, Canada, New Zealand, Japan), and you can set your own tax rate and currency formatting.
Invoice faster. Keep your data.
Slipstream Invoices is coming soon to the App Store and Google Play — one purchase, yours for good.
Questions? support-slipstream@jorrel.dev