App projects carry more uncertainty than almost any other freelance work. The client has an idea, a sketch on a napkin and a budget that may or may not match it. The feature list grows with every conversation. Then there are app store reviews, third-party APIs that change, and the question nobody asked: who pays for the servers after launch.
This proposal template brings that uncertainty into the open. It starts with a paid discovery phase, defines a minimum viable product with prioritized features, lists the technical stack and third-party services, and sets out testing, app store release, warranty and code ownership. It suits mobile apps, web apps and cross-platform builds by independent developers and small studios.
TL;DR
The app development proposal template scopes a mobile or web app: paid discovery, an MVP feature list ranked must, should and could, platforms and tech stack, third-party services, design, build sprints, testing devices, app store release under client-owned accounts, a warranty period, support options, milestones and code ownership. Send it after an initial call. The key practice is fixing the discovery fee and quoting the build as a range until discovery ends.
What's inside
- Problem and users: what the app solves and for whom.
- Platforms and approach: iOS, Android, web, native or cross-platform, and why.
- MVP feature list: features ranked must, should and could, with out-of-scope items.
- Technical stack and third-party services: frameworks, backend, payments, maps, messaging, analytics.
- Phases: discovery, design, development sprints, testing, release.
- Testing and quality: devices, operating system versions, acceptance testing.
- Release and hosting: app store accounts, submission, hosting and running costs.
- Warranty, support and ownership: bug-fix period, maintenance options, code and IP.
- Budget, milestones and acceptance: discovery fee, build range or fixed price, payment milestones.
When to use it
Use it for new apps, from a first MVP to a larger build with an existing product owner. It works for founders, small businesses and internal tools at larger companies.
Choose another document when:
- The client mainly wants a marketing website. The web design proposal is shorter.
- The client has signed and wants detailed tasks, acceptance criteria and change control. Follow up with the software development SOW.
- The idea is too early to scope. Sell discovery on its own with the discovery phase SOW.
Scoping an MVP the client will accept
Founders often want every feature they have imagined in version one. The proposal is where you help them cut.
Rank features. Use three buckets. Must-have features are the ones the app cannot launch without. Should-have features add real value but could follow a few weeks later. Could-have features are nice ideas to revisit after launch. Estimate each feature, so the client can see what moving one bucket costs.
Write user stories, not screens. "A customer can book a 30-minute slot and pay a deposit" says more than "booking screen." It also exposes hidden work: availability rules, payment provider, confirmation emails, cancellation.
List what is out. Admin dashboards, offline mode, multiple languages, push notification campaigns, user roles. Each is easy to assume and expensive to add.
Use a range until discovery ends. Before discovery, you are estimating from a conversation. A range such as "[LOW] to [HIGH], confirmed at the end of discovery" is honest. After discovery, convert it to a fixed price or a capped time-and-materials budget.
Running costs and release details clients forget
App store accounts. Apple and Google developer accounts should be owned by the client, with you added as a team member. Publishing under your own account makes transfer awkward later.
App store review. Reviews can reject an app for reasons outside your control. Allow time in the plan, and state that you will address review feedback within the warranty.
Third-party services. Payment processing, maps, SMS, email delivery, analytics and cloud hosting usually have usage-based fees. List them as client costs, paid on client-owned accounts.
Warranty. A bug-fix period after launch, often 30 to 90 days, covers defects in work you delivered. New features, operating system updates and third-party changes are support work, not warranty.
Maintenance. Operating systems and libraries update every year. Offer a monthly support plan, or the app slowly breaks.
Customize it in your COLO workspace
Recreate discovery, design, each sprint and release as line items in a saved proposal template in COLO Proposals, with hours and rate on each. The client accepts in the client portal, and an accepted proposal converts into the discovery invoice.
During the build, a project budget can warn you at 80 percent of the agreed hours. At 100 percent, billable timers stop and you can send a contract update request for the client to approve or decline in the portal, which is a cleaner way to handle scope growth than an awkward email.
Common mistakes
- Fixed price before discovery. Quote a range and fix it later.
- Everything is a must-have. Rank features and estimate each one.
- Your name on the app store listing. Use client-owned accounts.
- Unlisted running costs. Hosting and APIs cost money every month.
- Warranty that never ends. Set a period and offer a support plan after it.
FAQ
Q: What should an app development proposal include?
The problem the app solves, target users, platforms, an MVP feature list with priorities, technical approach, third-party services, design and development phases, testing, app store release, hosting, warranty and support, timeline, budget and ownership of code.
Q: How do developers estimate the cost of an app?
Most break the app into features, estimate each in days or hours, add time for design, testing, project management and release, then add a contingency. Many quote a fixed price for a paid discovery phase and give a range for the build until discovery is complete.
Q: Should the client have their own app store accounts?
Yes. Apps should be published under developer accounts owned by the client, with the developer added as a team member. Publishing under your own account makes later handover difficult.
Q: What is an MVP and why scope one?
A minimum viable product is the smallest version of the app that solves the core problem for real users. Scoping an MVP keeps the first release affordable and lets the client learn from users before funding further features.
Q: Who owns the source code?
Usually the client, once paid in full, with the developer keeping rights to reusable libraries and tools they built before the project. State this clearly and list any open-source components and their licenses.