MOBILE DESIGN CONTRACT

Mobile Design Contract

A product design agreement between Northwind Studio and Acme Co covering the design of a native mobile app across iOS and Android.

PREPARED FOR

Acme Co

PREPARED BY

Northwind Studio

DATE

August 18, 2026

Northwind Studio

MOBILE DESIGN CONTRACT

Parties and Product

This agreement is entered into by Northwind Studio (the "Designer") and Acme Co (the "Client") for the design of a native mobile application. Scope covers UX, UI, prototypes, and a design system handoff for the engineering team building the app.

PLATFORMS

iOS + Android

Native design language applied per platform where it matters.

SCREENS

~35

Core flows across onboarding, main app, and settings.

TIMELINE

10 weeks

From kickoff to design system handoff.

Recitals

The Client is building a native mobile app and needs a partner to shape the user experience, visual design, and design system. Both parties agree that quick iteration, honest usability feedback, and a tight loop with engineering are what separate a good mobile app from a shipped one.

Northwind Studio

MOBILE DESIGN CONTRACT

Scope of Design

The project runs in three phases. Each closes with a working deliverable and a review before the next phase begins.

PHASE 1 · UX AND FLOWS

UX and flows

Discovery, information architecture, user flows, and low-fidelity wireframes for every core screen. Closes with an interactive click-through prototype used to validate the structure with real users.

PHASE 2 · VISUAL DESIGN

Visual design

High-fidelity mockups for iOS and Android across the approved flows, respecting each platform's native patterns. Two revision rounds on the visual language, plus an interactive prototype for the primary user journey.

PHASE 3 · DESIGN SYSTEM AND HANDOFF

Design system and engineering handoff

A component library covering typography, color, spacing, icons, and reusable UI patterns. Handoff sessions with engineering, ongoing Q&A during the build, and design QA on the first release build.

What is included

User flows and wireframes for all core screens
High-fidelity iOS and Android designs, primary journey prototyped
Reusable component library in Figma with tokens and documentation
Two engineering handoff sessions and Q&A during the build
Design QA on the first release candidate on both platforms

Not included: mobile engineering, brand identity development, illustration, motion beyond micro-interactions, App Store and Play Store listing assets, and localization. New scope can be added in writing at any time.

Northwind Studio

MOBILE DESIGN CONTRACT

Fees and Ownership

The project is a fixed-fee engagement billed across the three phases. Line items map to the deliverables described above.

Item	Rate	Qty	Amount
UX, flows, and prototype	$12,000	1	$12,000
Visual design (iOS + Android)	$18,000	1	$18,000
Design system and handoff	$8,000	1	$8,000
Total			$38,000

Payment Schedule

Milestone	Share	Amount
On signature	40%	$15,200
On visual design approval	40%	$15,200
On design system handoff	20%	$7,600

Ownership and Portfolio

On receipt of final payment, the Client owns all approved final design files, prototypes, and the component library outright. The Designer retains ownership of internal tools and templates used to deliver the work, and may show the final product in a portfolio unless the Client requests otherwise in writing.

Northwind Studio

MOBILE DESIGN CONTRACT

Acceptance

To start the project, complete the fields below and sign. Kickoff is scheduled within two weeks of signature and the first invoice being settled.

APP WORKING TITLE

Internal or public name for the app

TARGET RELEASE DATE

e.g. Q1 2027

I confirm I am authorized to commission this design work on behalf of the Client.

CLIENT

Sign here

Acme Co

DESIGNER

Sign here

Northwind Studio

About this template

The Mobile Design Contract template is a five-page document for putting the arrangement on paper before it starts. It carries a cover, a parties and purpose page with stat cards, a scope or terms section broken into three tracks with obligations, a fees or reference table with a computed total, and an acceptance page with inputs and signatures.

It is intentionally simple: rename what needs renaming in Bonsai, adjust the terms to match your engagement, and set the numbers. Merge fields handle the party names and date, and the last page collects the details you asked for, an authorization checkbox, and both signatures.

Details

Format: Doc · 5 pages

Recipients: Client + Provider

Signature: Client + Provider

Merge fields: Sender, Receiver, Date

Mobile Design Contract Template

Mobile Design Contract Template