Customers, ready when you are
Keep company and private customers, contacts, VAT IDs, billing and shipping addresses, currencies, terms, and notes in one clean record.
Inline creation while writing a document
Focused invoicing, end to end
From estimate
to paid, without
losing the thread.
Customers, estimates, invoices, branded PDFs, and payment records in one focused workspace—built to make the financial side of your work feel unusually clear.
Guided business setup EUR and USD documents 10 invoices included free
invoice.strics.atLIVE VIEW
One workspaceCustomer to payment
Three templatesAlways on brand
Two languagesEnglish and German
Clear historyIssued means immutable
02 / THE WORK
Everything connected.
Nothing in the way.
The daily jobs are fast; the underlying records stay rigorous. Every view follows the same quiet, compact system.
Estimates that become invoices
Build detailed estimates, download polished PDFs, track their status, and convert accepted work into a draft invoice without retyping a thing.
Idempotent conversion with a clear audit trail
Invoices and payments in one thread
Add line items, VAT, discounts, service dates and terms. Issue final numbers only when ready, then record payments and reversals.
Net, VAT, gross, due, and paid at a glance
Your documents, not ours
Choose one of three layouts, add your logo, tune labels and visible columns, and keep every issued PDF tied to its exact template version.
English and German document labels
03 / THE THREAD
A straight line from yes to paid.
Each step keeps the context from the one before it, so your work can move forward without creating a trail of duplicate records.
01
Estimate
EST-2026-015Scope the work, price it clearly, and download a branded PDF.
02
Invoice
INV-2026-038Convert once, review the draft, then allocate its final number.
03
Paid
€3,780.00Record the payment and let the dashboard update the bigger picture.
04 / MAKE IT YOURS
Three starting points. One exact identity.
Your logo, accent, typography, labels, columns, notes, and payment details all live in a structured template—not a fragile design file.
- 01Modern
Balanced hierarchy for everyday client work.
- 02Minimal
Quiet typography with generous space and focus.
- 03Compact
Dense, structured detail for longer documents.
05 / BUILT WITH CARE
Serious underneath.
Simple on the surface.
STRICS Invoice uses Firebase for identity and data, with server-side validation for every mutation and immutable records when a document becomes official.
Google Apple
Google and Apple sign-in
Use the same STRICS Invoice account on the web and in the native iPhone companion app.
Workspace-scoped records
Firebase rules and verified membership keep customer and document reads within the right organization.
Immutable issued history
Issued documents snapshot their customer, totals, terms, numbering, and template version so history stays history.
International-ready structure
Country details, tax IDs, service dates, sequential numbering, tax treatments, bank details, and bilingual labels are part of the model.
STRICS Invoice PROType the business.
Type the business.
Review the details.
Keep moving.
PRO removes the 10-invoice limit and adds company lookup that suggests public address, contact, and VAT details from a business name. You stay in control and confirm every field before it is saved.
FREEStart without a card
10 invoices
PROMonthly or yearly
Unlimited + AI assist
Start free or upgrade Stripe on web · App Store on iPhone
New customerAI ASSIST
Northstar Studio Ltd⌘ K
Suggested detailsREVIEW BEFORE SAVING
- Business name
- Northstar Studio Ltd
- Address
- 48 Clerkenwell Road, London EC1M 5PQ
- Tax ID
- GB 781 2450 09
06 / YOUR NEXT INVOICE
Make the admin feel as considered as the work.
Start free with 10 invoices. Upgrade on the web or iPhone for unlimited invoices and AI customer assist.