Invoicing · Incomes · Expenses
Invoices, payments and costs for a small business — with a Telegram bot that does not merely tell you something needs doing. It carries the button that does it.
Northgate Studio — example data
The surface
Telegram
One message per chat, rewritten in place. Press a button and the same screen answers — a listing, a set of figures, a confirmation.
Invoice 2026-037 — Northgate Studio, $4,315.00. Still a draft, due in 3 days.
› sent, signed, and filed — 14:02
Signatures
Finalizing writes the PDF and signs it. Your client checks the file with plain minisign — no account here required.
$ minisign -Vm inv.pdf Signature verified
Recurring
Rent, hosting, the accountant. Written once, filed on the day it falls, every month, without anyone remembering.
Currency
Backups
The database and every stored file in one archive, encrypted to keys you name. Downloaded, or dropped into your own chat.
Reminders
Each message: on or off, how many days from the date it is about, and the hour it goes out.
| Finalize reminder | 3 days before | 09:00 |
| Tax reminder | 7 days before | 08:00 |
| Expense reminder | 1 day before | 10:00 |
Companies
Each with its own clients, catalogue, bot, mail relay and signing key. Nothing leaks between them.
Northgate Studio
$12,480.00 · awaiting
Harbour Consulting
€2,050.00 · awaiting
Pricing
The plans are not settled, and a number posted today would be a number changed on you in a month. Nothing here is billed while that is true.
One account holds every business you run — each with its own books, its own bot and its own signing key.