by OntiqoYour AI reads everything
It decides what each item is, and Longtom books the receipt, files the letter or opens a ticket with a drafted reply.
- Press Process when you sit down, or let it run as things arrive.
Accounting and support for a business of one.
The books, the tax, customer support and licensing for a one-person business, handled while you build.
How it works
Put it in the inbox. Press Process.
Drop receipts, invoices and letters in the Longtom Inbox on your desktop. Mail, texts, voicemail and bank lines come in by themselves.
What it does
Setting up, the books, support and sales.
A company to register, a return to file, a receipt to book, a customer waiting on a reply. None of it is why you started.
Setting up
Which registrations you need, in what order, what each costs and which blocks which. Done once.
Bookkeeping
Bank statements and receipts in, a trial balance out, and the return prepared in your authority’s own labels.
- You lodge it yourself. Every figure shows the ledger lines it came from.
Support
Email, texts and voicemail become tickets with a drafted reply. A reported bug is reproduced against your repository and fixed on a branch.
- Routine replies go out on their own; the rest wait for you, with the reason on the ticket.
Sales and licences
Orders, licences, reviews and store payouts, with invoices and credit notes in your country’s form.
Your AI
It uses the AI you already pay for.
Claude Code, Codex, GitHub Copilot, Cursor, Antigravity and nine more, or a command you name, on your own subscription.
Most of it never asks a model
Rates, deadlines, fees and the order of the steps are built in: the same answer every time, without spending your plan.
One folder
Books, documents and backups in one folder, backed up to your OneDrive or any folder you choose. A new computer restores it in one click.
Countries
77 countries, each one known in full.
For each: the tax and its rate, the registration threshold, the return and its real due dates, the authorities and the privacy law.
Albania TVSH (VAT)
Argentina IVA (Impuesto al Valor Agregado)
Armenia ԱԱՀ (VAT)
Australia GST
Austria USt (Umsatzsteuer)
Bangladesh মূল্য সংযোজন কর (VAT)
Belgium BTW / TVA (belasting over de toegevoegde waarde / taxe sur la valeur ajoutée)
Brazil
Bulgaria ДДС (DDS, value added tax)
Canada GST/HST
Chile IVA (Impuesto al Valor Agregado)
Colombia IVA (Impuesto sobre las Ventas)
Costa Rica IVA (value added tax)
Croatia PDV (porez na dodanu vrijednost)
Cyprus ΦΠΑ (VAT)
Czechia DPH (daň z přidané hodnoty)
Denmark moms (merværdiafgift)
Egypt ضريبة القيمة المضافة (VAT)
Estonia käibemaks
Finland ALV (arvonlisävero)
France TVA (taxe sur la valeur ajoutée)
Georgia დღგ (VAT)
Germany Umsatzsteuer
Ghana VAT (Value Added Tax)
Greece ΦΠΑ (FPA, value added tax)
Hong Kong
Hungary ÁFA (általános forgalmi adó)
Iceland VSK (virðisaukaskattur)
India GST (Goods and Services Tax)
Indonesia PPN (Pajak Pertambahan Nilai)
Ireland VAT
Isle of Man VAT (value added tax)
Israel מע"מ (ma'am, value added tax)
Italy IVA (imposta sul valore aggiunto)
Japan 消費税 (consumption tax)
Jersey GST (goods and services tax)
Kazakhstan ҚҚС / НДС (VAT)
Kenya VAT (Value Added Tax)
Latvia PVN (pievienotās vērtības nodoklis)
Lithuania PVM (pridėtinės vertės mokestis)
Luxembourg TVA (taxe sur la valeur ajoutée)
Malaysia SST (Sales and Service Tax)
Malta VAT (Value Added Tax)
Mexico IVA (Impuesto al Valor Agregado)
Moldova TVA (VAT)
Morocco TVA (value added tax)
Netherlands btw (omzetbelasting)
New Zealand GST
Nigeria VAT (Value Added Tax)
Norway MVA (merverdiavgift)
Pakistan
Peru IGV (Impuesto General a las Ventas)
Philippines VAT (Value Added Tax)
Poland VAT (podatek od towarów i usług)
Portugal IVA (Imposto sobre o Valor Acrescentado)
Romania TVA (taxa pe valoarea adăugată)
Rwanda VAT (value added tax)
Saudi Arabia ضريبة القيمة المضافة (VAT)
Serbia PDV (porez na dodatu vrednost)
Singapore GST
Slovakia DPH (daň z pridanej hodnoty)
Slovenia DDV (davek na dodano vrednost)
South Africa VAT
South Korea 부가가치세 (value added tax)
Spain IVA (Impuesto sobre el Valor Añadido)
Sri Lanka VAT (value added tax)
Sweden moms (mervärdesskatt)
Switzerland MWST / TVA (Mehrwertsteuer / taxe sur la valeur ajoutée)
Taiwan 營業稅 (business tax)
Thailand ภาษีมูลค่าเพิ่ม (VAT)
Türkiye KDV (Katma Değer Vergisi)
Ukraine ПДВ (VAT)
United Arab Emirates VAT
United Kingdom VAT
United States
Uruguay IVA (VAT)
Vietnam Thuế GTGT (value added tax)
No tax named means none, a tax levied state by state, or one being changed; the profile says which. Country data updates without a new version.
Price
Free until you earn.
Longtom
Free until 100 days after your first booked income. Then US$99.99 a year or US$11.99 a month, through the Microsoft Store.
Stop paying and you keep your books, invoices, documents and exports. New work stops.
Online backup
Optional, US$39.99 a year or US$4.99 a month: an encrypted copy of your books and documents, up to 5 GB, that only your recovery key opens.
Where it stops
Made for a business of one.
Never payroll. Never an accounting package. Never multi-user.
That is the whole product, not a stage on the way to something bigger.
Leaving is designed
Outgrow it and move to your country’s usual accounting package: the ledger exports OFX, and each country profile names the ones accountants there accept.
Coming to the Microsoft Store
Longtom is in development.
- Windows 10 or 11
- Windows 10 version 2004 or later.
- A coding AI
- Claude Code, Codex, GitHub Copilot, Cursor or another coding CLI, on your own plan.
- Your country
- One of the 77 listed above.
Questions? See Help and the guide, or contact support.