Professional quotes.
Instant invoices.
Get paid faster.
The all-in-one invoicing app for freelancers and small businesses. Create stunning quotes, track expenses, manage clients, and accept Bitcoin payments — all from one beautiful interface.
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Software ownership. Remember that?
You used to buy software and own it. Your data lived on your device, not someone else's server.
Now everything's rented, streamed, and monetised through your usage data.
Quantum Quote is our answer: tools you control, data that stays yours, no monthly ransom.
True Ownership
No subscriptions, no cloud lock-in. Buy once, own forever. Your software, your rules.
Privacy First
Your data never leaves your device. We can't see it, we don't want it, we don't need it.
Self-Custody
Your invoices, your client data, your financials. No middlemen, no permission needed.
No Data Harvesting
We don't monetise your usage. No analytics on your business, no selling your patterns.
A Quantum Encoding product. Taking software back to before everything became subscriptions and cloud dependency.
Everything you need to run your business
From creating invoices to tracking expenses and filing taxes — Quantum Quote handles it all in one beautiful, fast interface.
Dashboard
Your business at a glance. Revenue, pending payments, recent activity.
Create PDF
Generate professional quotes and invoices in under 60ms.
Invoices
Track all your invoices. Filter by status, client, date.
Recurring
Set up recurring invoices for retainer clients.
Projects
Organize work by project. Track time, materials, and billing.
Clients
Client database with contact info, payment history, and notes.
Products
Save your services and products for quick invoice creation.
Notes
Keep notes for each client or project.
Expenses
Track business expenses. Categorize for tax deductions.
Tax Summary
Real-time tax overview. Know your liability instantly.
Tax Center
Manage VAT, income tax, and reporting periods.
MTD
Making Tax Digital compliant. Ready for HMRC submissions.
Profit & Loss
See your actual profit after expenses.
Revenue
Track income over time. Monthly, quarterly, yearly views.
Aging
See which invoices are overdue. Never miss a payment.
Charts
Visual reports and analytics for your business.
Accept Bitcoin. No third parties.
Every invoice can include a Bitcoin payment option with a QR code. Your customers scan, you receive BTC directly to your wallet. No payment processor fees. No middlemen.
- Auto-generated QR codes on every invoice
- Direct wallet-to-wallet payments
- Zero transaction fees from us
#INV-2024-0042
$1,250.00
Pay with Bitcoin:
BTC Amount:
0.0142 BTC
bc1qxy2kgdyg...7qrh
Example invoice with Bitcoin payment option
Tax Center
Q4 2024
VAT Collected
$2,450.00
+12% from Q3
VAT Paid
$890.00
Deductible
Due: 7 Feb 2025
MTD Ready. HMRC Compliant.
Built for UK businesses. Quantum Quote handles VAT calculations, keeps digital records, and prepares your data for Making Tax Digital submissions. Stay compliant without the spreadsheet chaos.
Digital Records
Automatic record keeping
VAT Tracking
Real-time VAT calculations
Tax Reports
Quarterly summaries
HMRC Ready
Export for submission
Buy once. Own forever.
No monthly subscriptions. No cloud fees. No data harvesting. Just software you own outright.
Standard
For freelancers and small businesses worldwide
- Unlimited invoices & quotes
- Client & product management
- Expense tracking
- Profit & loss reports
- Bitcoin payment QR codes
- PDF export (56ms generation)
- All future updates included
UK MTD
Making Tax Digital compliant for UK businesses
- Everything in Standard
- MTD for VAT ready
- HMRC digital records
- VAT return preparation
- Tax summary reports
- Quarterly reporting tools
Covers HMRC API changes
Spanish VAT
VeriFACTU compliant for Spanish businesses
- Everything in Standard
- Spanish VAT (IVA) support
- VeriFACTU compliant
- AEAT reporting format
- Multi-rate VAT handling
- Modelo preparation
Covers AEAT/VeriFACTU changes
Why a small annual fee for tax versions?
Government tax APIs change. When HMRC or AEAT update their systems,
we update the app. The fee covers ongoing compliance work — nothing else.
Your platform. Your choice.
Quantum Quote runs natively on your device. No web app lag. No browser tabs. Just a fast, beautiful experience.
Built with Tauri for native performance. Your data stays on your device.