Billing, invoices & payment tracking
Know exactly what every client still owes you
Umikflow is a billing and invoicing workspace for freelancers, consultants, agencies and small businesses. Create invoices for products or services, add Sales Tax, VAT, or GST when you use it, track payments and outstanding balances, share a PDF, and send WhatsApp payment reminders — without treating tax invoices and outstanding follow-ups as the same job.
- No credit card required
- Private to your workspace
- WhatsApp reminders built in
Example client file. Names and amounts are illustrative.
Built for small businesses
Everything you need to track what you are owed
Client records, multi-tax invoices, payment history and balances in one workspace. No accounting setup and no chart of accounts — billing and invoicing, not a general ledger.
Client management
One record per client with their name, mobile number, an optional reference for the work and the fee you agreed. Search and filter the list as it grows.
Learn morePayment tracking
Record each payment with an amount, a date and a note. Paid and due recalculate from the entries, so partial payments need no arithmetic from you.
Learn moreOutstanding balance tracking
Every client reads as Fully Paid, Partially Paid or No Payments, and the dashboard totals what is still to be collected across all of them.
Learn moreWhatsApp payment reminders
Pick English, Hindi or Gujarati and WhatsApp opens with the fee, the amount paid and the balance already written out. You review it and press send.
Learn moreTax invoices
Add multiple products or services, choose an invoice look, apply tax-inclusive or exclusive pricing, then print or download an A4 PDF. Outstanding balances stay on the client ledger.
Learn morePrivate workspace
Your clients and payments belong to your account. The rules that enforce it run inside the database, not only in the browser.
Learn moreGetting started
How Umikflow works
Four steps from an empty workspace to knowing exactly who still owes you.
Create your workspace
Sign up with an email address and confirm it. The workspace is yours and starts empty.
Add your clients
Enter a name, a mobile number and the fee you agreed. A reference for the work is optional.
Record payments
Log each amount as it arrives, with the date it landed and a note if it helps you remember.
Track balances and follow up
See who is still outstanding, create a tax invoice when you need a document, or prepare a WhatsApp reminder.
The billing workflow
From a new client to a settled balance
This is the whole product. Each stage feeds the next, and the balance is never something you maintain by hand.
Add client
Name, mobile number and an optional reference for the work.
Set agreed fee
The total you and the client settled on for this piece of work.
Record payment
Amount, date and a note — one entry per instalment received.
Balance updates
Paid and due recalculate from the entries. Nothing to maintain by hand.
Generate a tax invoice
Add products or services, apply GST you configure, then print or download an A4 PDF. Invoice look is chosen on your profile.
Send a WhatsApp reminder
Pick a language and WhatsApp opens with the agreed fee, amount paid and balance written out. You review it and press send.
ROI Calculator
Estimate what you would be tracking
Three numbers from your own business. No assumptions and no projections — just the amount that would be sitting in your workspace marked outstanding.
Your figures
Move each slider. The estimate updates as you go.
The calculator uses the figures you provide. Umikflow does not collect client payments; it helps you track what you billed, what was paid, and what remains outstanding.
Outstanding to follow up
₹45,000/ mo
The balance your workspace would be showing as unpaid
Total billed
₹2,25,000/ mo
Across 15 clients
Privacy
Your billing workspace stays private
What your clients owe you is commercially sensitive. Here is how access is actually restricted — no certifications claimed, just the mechanisms that are in place.
Authenticated access
Sign-in, email confirmation and password resets are handled by Supabase Auth.
Database-level isolation
Row Level Security policies decide which rows a request may read, inside Postgres.
Admin boundaries
Administrators moderate accounts. They have no route into a merchant's client or payment ledger.
No privileged keys in the browser
The app ships with the public anon key only. Service-role credentials never reach it.
Answering your questions
Frequently asked questions
What Umikflow does, what it deliberately does not do, and how your records are kept private.
What is Umikflow?
Does Umikflow support US Sales Tax, VAT, or GST?
Can I generate invoices?
Can I track client payments?
Can I track outstanding balances?
Can I send payment reminders through WhatsApp?
Does Umikflow process or collect client payments?
Ready to take control of your client billing?
Create invoices, record payments, and follow up on outstanding balances — then send a WhatsApp reminder when you need to.