For app development studios
Scope the build.
Bill the milestone. Get paid on delivery.
Hanko gives app development studios one workspace to turn an estimate into a signed SOW, invoice each milestone as you ship, and bill maintenance retainers, paid by international clients in fiat or crypto.
Set up in minutes · One workspace · Get paid in fiat or crypto
Trusted by app studios shipping iOS, Android and cross-platform builds for clients worldwide
The build-shop tax
You ship clean code, then lose a week to scoping, signatures and chasing milestone payments.
Estimates stall before sign-off
You scope an iOS and Android build, send the estimate, then wait while it bounces between the client and their lawyer before anyone signs a SOW.
Milestone billing drifts from delivery
You ship the sprint, but the invoice goes out late and unlinked to the deliverable, so payment lags every release.
Change requests with no paper trail
Mid-build scope changes get agreed on a call, never signed, and quietly eat your margin.
Retainers and overseas clients
Post-launch maintenance invoices get sent by hand, and international clients mean FX fees and slow bank wires.
How it works
Up and running in three steps
No migration project, no five separate tools. Set it up once and run the whole client relationship from one place.
Scope it once, send a branded proposal
Lay out phases, milestones and pricing on a proposal microsite, start from a dev template or let AI draft the scope from a short brief.
Turn the yes into a signed SOW
Convert the accepted proposal into a SOW or MSA with pre-placed signature fields, and e-sign every change order the same way.
Invoice each milestone, then get paid
Bill milestones as you ship, schedule recurring maintenance retainers, and collect in fiat or crypto, all reconciled on one ledger.
What you get
Everything the job needs, in one workspace
Estimates that turn into signed builds
Branded proposal microsites that lay out phases, milestones and pricing, not a static PDF. Start from a dev template or let AI draft the scope from a short brief; the client reviews, accepts and signs on the same page.
- Phase & milestone pricing on a branded microsite
- AI drafts the scope from a short brief
- Client accepts and signs in one place

SOWs and change orders, signed in minutes
Ten contract templates, SOW, MSA, NDA, consulting, retainer, with placeholders, pre-placed signature fields and signer roles, plus a full audit trail. Save your own as reusable templates for every new engagement.
- SOW, MSA & NDA templates ready to send
- E-sign change orders with a full audit trail
- Save your contracts as reusable templates

Bill every milestone, every retainer
Milestone and deposit invoicing tied to delivery, plus recurring billing for maintenance and support retainers, in 15 branded designs. Clients pay by card, bank transfer or stablecoin, and you settle into the currency you want.
- Milestone, deposit & recurring invoices
- Pay by card, bank (ACH/SEPA) or stablecoin
- Fiat & crypto reconciled on one ledger

Minutes
From accepted estimate to signed SOW
Recurring
Maintenance & support retainers bill themselves
Fiat + crypto
International clients pay however they prefer
“We scope an app build, the client signs the SOW the same day, and every milestone invoices itself as we ship. Our US and EU clients pay by card or USDC, and it all reconciles in one place.”
Questions
Good questions, answered
Yes. Create milestone and deposit invoices linked to each phase and send them as you ship a release, or schedule them in advance so billing never lags delivery.
Ship the app. Hanko handles the paperwork.
Send your first scoped proposal today.
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