Development Proposals

Mobile App Development Proposal

An iOS and Android app for your core customer journey, at a fixed price.

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A clear structure

A starting point for the scope, pricing and next steps you want to share

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About this template

This mobile app proposal template sets out a fixed-price build of an iOS and Android app, priced in four milestones from specification to store submission. It is for app studios, agencies and freelance developers asking a client to approve a defined scope, a team and a delivery plan before any code is written.

Who this template is for

Use it when a client already has a product or service, most of their customers arrive on phones, and they want the core customer journey in a native-feeling app. It assumes one cross-platform codebase and an existing backend, so it fits teams that build on the client’s API rather than rebuilding it.

What each section covers

Introduction and Our recommendation: A letter that names the decision you are asking for, then the planned scope: screen count, platforms, store releases and weeks to submission.
Your situation and How we build: Three cards on the client’s problem, then four stages: specification, design with a tested prototype, the iOS and Android build, and testing and release.
Your team and Client results: Cards for the product lead, designer and lead engineer, plus space for a testimonial and case study.
What is included and Timeline: Inclusions, exclusions such as tablets and new backend work, a responsibilities table covering API access and developer accounts, and a 16-week phased timeline.
Questions, Pricing and Next steps: Seven answers on store approval, devices, ownership, API readiness, changes, offline use and support, then milestone pricing with optional extras and three steps to kick off.

How to price an app development proposal

The template uses a fixed price split into discovery, design, build and testing, with payments due at approval, design sign-off, beta delivery and store submission. Each payment matches something the client can see and test.

Price ongoing work separately. Tablet layouts, extra screens and monthly support with OS updates sit as optional extras, so the core build stays fixed. If the specification is still unclear, consider pricing discovery on its own first and quoting the build once the scope is agreed.

Before you send it

Check the API: Confirm the client’s API can support the journey. The template schedules an API gap list in week two for a reason.
Name the devices: State minimum iOS and Android versions and say plainly that tablets and wearables are out unless priced.
Clarify store fees: Make clear the client pays Apple and Google developer fees and owns the accounts.
Do not promise approval: Store review is outside your control. Promise submission and fixes for review feedback, not approval.

See how agencies run proposals

What’s in the Mobile App Development Proposal

11 parts, in the order your client reads them. Every part is editable: keep what fits the job, rewrite the rest and add your own.

Introduction
This proposal sets out the app you get on iOS and Android, the devices it supports, the 16-week schedule, the fixed price and what your team needs to provide.
Our recommendation
We recommend one app for iPhone and Android, built from a single codebase around booking and payments.
Covers: Planned scope
Your situation
Here is your situation as you described it to us. If anything has changed since your call, tell us and your proposal will be updated.
How we build
The project has four parts. You review and approve each one before the next begins.
What is included
Everything the fixed price covers, the devices the app supports, and what it does not cover.
Timeline
Workshops, user flows, feature list, acceptance criteria and a review of your API.
Your team
Runs the workshops and reviews, owns the specification and schedule, and is your day-to-day contact.
Client results
A similar customer journey, the scoped mobile experience and the evidence reviewed at release.
Covers: The client, The result
Questions
No one can guarantee approval, because Apple and Google make the final decision.
Pricing
Three options. We recommend Full app. Choose an option and any extras on this page.
Covers: Included in the price, Not included
Next steps
How we get started once you approve the fixed-price build.

Frequently Asked Questions

What goes into a mobile app development proposal?

The problem the app solves, the screens and features in scope, supported platforms and OS versions, the build approach, a timeline to store submission, what the client must provide, what is excluded, ownership of code and accounts, and milestone pricing.

Should an app proposal be fixed price or time and materials?

Fixed price works when the screens and integrations are defined, as here. When requirements are unclear, price a paid discovery phase first, then fix the build. Time and materials suits ongoing feature work after launch.

Who owns the app code and store listings?

State it in the proposal. This template gives the client ownership of the code and store listings and has them hold their own developer accounts, which avoids disputes if the relationship ends.

What happens after the app is released?

The template includes a fixed period of post-release fixes, then offers monthly support and OS updates as an optional extra. Say what counts as a fix and what counts as new work.

See all proposal templates