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

2-min tour · Estimate → signed SOW → milestone invoice

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.

01

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.

02

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.

03

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

Proposals

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
Hanko proposal studio showing a branded app build proposal
Agreements

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
Preparing a statement of work for signature in Hanko
Invoices & payments

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
Branded milestone invoice designs in Hanko

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.
Marcus Tan · Co-founder, Tidewave Apps

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.

Set up in minutesOne workspaceFiat or crypto

Want the details first? See pricing

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