How to Invoice as an App Developer: Rates, Terms and Templates

Mobile and backend work benefits from invoices that mirror your backlog: epics, sprints, or fixed phases for MVP → v1 → polish. That helps founders map spend to runway and helps enterprise PMs reconcile PO lines.

TestFlight builds, store screenshots, and analytics are easy to give away—put them in scope documents and invoice line items when they are not complimentary. Backend API work and mobile UI should be separable lines when different sponsors pay for each track. Wear OS or Apple Watch companions are easy to underestimate—if you priced them, list platform explicitly so no one thinks “iOS app” included every screen size by default.

Typical rates

Time and materials with a not-to-exceed cap, fixed-price milestones, or monthly team retainers are common. Apple / Google developer fees and cloud usage may be pass-through or marked up—state your policy. For release-process context that affects timelines, see Apple’s App Store review guidelines when explaining rejection cycles on invoices or statements of work.

Security review or penetration test remediation blocks should be separate milestones so payment is not hostage to third-party schedules you do not control. CI/CD minutes and device farm usage spike near launch—either cap included usage or bill overage. Offline-first or sync-heavy features deserve explicit QA lines—they are not “just another screen” when regression testing doubles. Push notification and deep link plumbing often spans mobile and backend—split the hours honestly so each team lead sees what they are funding.

Payment terms

Upfront payment for sprint 1, then every 2 weeks or per milestone; Net 30 for signed B2B contracts. Holdbacks rare unless enterprise procurement requires them—mirror their wording. For fixed-price MVPs, tie 30/40/30-style splits to demo-able builds, not calendar months alone. See invoice payment terms.

What to include

Release or sprint ID, features or tickets summarised (readable by non-engineers), hours × rate or flat sprint fee, third-party costs itemised, testing/QA if billed separately, tax, total, due date. Cross-check universal fields via what to include on an invoice.

Note platform (iOS, Android, backend) on each line when one stakeholder only cares about half the stack. Build number or tag references help QA and finance match the same release.

Common mistakes

Single line “development” for $20k—finance teams reject it. Scope creep without change orders. Store submission assumed included—bill explicitly if you handle release management. Currency mismatch on global clients—state currency on every line. Crashlytics or observability spend silently absorbed—either bundle into retainer or invoice transparently. OWASP fixes rolled into “bugs” when they were security scope—label them for audit trails. Feature flags and remote config work hidden under “polish”—they are infrastructure with ongoing cost; show them when you bill setup. App store screenshot or preview video production is marketing labour—either include it in a package explicitly or invoice it separately.

Template link

Use the app developer invoice template for milestone and technical line items.

Save sprint summary snippets from your PM tool as invoice memos to reduce copy-paste errors.

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