D Dunner Open workspace
For freelancers who invoice across borders

Chasing invoices shouldn't be a second job.

Send an invoice in one click, auto-nudge at 0 / 7 / 14 days, lock the FX rate when you send. Three screens only: new invoice, who owes you, money in.

FreshBooks is $33/mo. Dunner is $99 once — invoicing, dunning, and FX lock included. Export JSON, CSV, XML, YAML, Markdown, or Excel.
INV-1042Due in 2 days
Northline Studio
$2,480.00
Brand identity$1,800
Landing page$680
OVERDUE
INV-1038Paid · EUR locked
Atelier Mira
€1,920.00
FX at send1 EUR = 1.087 USD
You keep$2,087.04

“Chasing invoices like it's a part-time job.”

r/freelance

“Stuck on invoicing tools that charge $150–200/month for things that should cost $30.”

r/SaaS

“Watching currency conversion quietly eat into what I'm owed.”

Freelancer, EU → US

The whole product is three pages.

No accounting suite. No project board. No CRM. You send, you watch what's owed, money lands.

01 New invoice

Client, line items, pay link

ClientNorthline Studio
DueNet 14
CurrencyUSD · locked
PayEmbedded checkout
02 Who owes you

Auto-nudge at 0 / 7 / 14 days

Mira · day 0Reminder sent
Northline · day 7Chasing
Helix · day 14Final notice
Copy is editable3 templates
03 Money in

Who paid, how much, at what rate

Atelier Mira€1,920
Locked 1.087$2,087
Helix Labs$640
This month$2,727
FX lock

If the rate jumps on payday, that loss isn't yours.

Lock the mid-market rate when you send. Clients pay in invoice currency. You keep the locked USD equivalent. Demo uses a public mid rate; production can sit on Stripe Checkout.

Try a cross-currency invoice
1.087

EUR → USD locked on send day. Client pays 11 days late. You still get the amount you quoted.

Pricing stays boring on purpose.

Lifetime pricing against subscription fatigue. Full product. No per-invoice meter.

Monthly
$19
  • Unlimited invoices and nudges
  • FX lock
  • Checkout links

FreshBooks $33/mo · QuickBooks $35/mo