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Mobile App Design & Development

Mobile App Development for Real User Needs

We plan mobile experiences around user tasks, device limits and release requirements.

NovaCraft maps flows, designs interfaces, develops agreed features, tests key journeys and prepares store submission with documented handover for future releases.

  • iOS & Android
  • Cross-Platform Builds
  • Store Submission
Small screen, sharper decisions

Plan Mobile Apps Around User Tasks

Every app decision runs into the same four constraints:

  1. One thing at a time, there is no second column to hide complexity in.

  2. Interrupted use, people are queuing, walking or half-watching something else.

  3. Unreliable connections, the network will drop mid-action, and often does.

  4. Two platforms with different conventions, expectations and review processes.

Designing for those constraints means cutting more than you would on the web, and being much more deliberate about sequence. A form that is merely long on a desktop becomes a reason to abandon on a phone.

We plan for the constraints rather than around them: fewer steps per screen, work that survives a lost connection, and platform conventions respected instead of overridden by one shared design.

What we can build

Mobile App Development Scope

App projects carry costs a website does not, store review, device testing, release cycles. We scope those in from the start so the timeline is realistic.

  • App Strategy and Scoping

    Deciding what the first release genuinely needs, what belongs in version two, and whether an app is even the right answer rather than a mobile web experience.

  • Mobile UX and UI Design

    Flows, screens and navigation designed for thumbs and interruptions, following iOS and Android conventions where users expect them.

  • Cross-Platform Development

    One codebase serving both platforms, which suits most products and keeps two versions from drifting apart. We say when a native build is the better call.

  • Native Device Features

    Camera, location, biometrics, notifications, file access and background tasks, with permission requests made at a point where the reason is obvious.

  • Offline and Sync

    Local storage, queued actions and conflict handling, so a dropped connection does not lose someone’s work or leave the interface lying to them.

  • Back-End and APIs

    Accounts, data, sync endpoints and integrations, built alongside the app rather than assumed to exist.

  • Store Submission

    Listings, screenshots, privacy declarations, age ratings, signing and the review process itself, including handling a rejection when one arrives.

  • Releases and Support

    Ongoing updates, OS version compatibility, crash monitoring and the maintenance an app needs simply to keep working.

Our toolkit

Tools for Mobile App Delivery

Cross-platform is the right default for most products. It stops being right when an app depends heavily on platform-specific behaviour or sustained high-performance graphics, and we will tell you when that is the case.

  • Design

    • Figma
    • Human Interface Guidelines
    • Material Design

    Used for flows, screens and prototypes, checked against each platform’s own conventions rather than one design imposed on both.

  • Cross-Platform

    • React Native
    • Expo
    • TypeScript

    Used for apps that should behave consistently on both platforms from a single codebase, with over-the-air updates for minor changes.

  • Native

    • Swift
    • Kotlin

    Used where an app depends on platform-specific capability, tight hardware integration or performance a shared runtime cannot reach.

  • Back-End and Services

    • Node.js
    • PostgreSQL
    • Firebase
    • REST

    Used for accounts, data, sync, push notifications and the endpoints the app depends on.

  • Release and Monitoring

    • App Store Connect
    • Google Play Console
    • TestFlight
    • Sentry

    Used for beta distribution, staged rollouts, store submission and crash reporting once real devices are involved.

Before submission

Prepare for Store Review Early

App review rejects things a browser never would: an unexplained permission, a missing privacy disclosure, an account you can create but not delete. Each rejection costs days.

We work through the requirements before submitting rather than discovering them in a review note, and we tell you which ones need a decision from you, a privacy policy, a support contact, data handling declarations.

Our pre-submission work can include:

  • Privacy manifest and data-collection declarations
  • Permission requests explained in context, at the point of use
  • Account deletion available in-app where an account can be created
  • Sign-in options meeting each platform’s current requirements
  • Age rating and content declarations
  • Store listing copy, screenshots and preview assets
  • Testing across a range of real devices and OS versions
  • Dark mode and dynamic type support
  • Accessibility passes with VoiceOver and TalkBack
  • Crash reporting configured before launch, not after
  • Staged rollout so a bad release can be halted
  • App signing and credentials held in your own accounts

Store policies change, and review outcomes are ultimately the platforms’ decision. What we can do is make sure nothing avoidable is what holds your release up.

Who this suits

Planning a Mobile App Project?

  • Products Used Repeatedly

    Where someone opens it several times a week and the home-screen icon saves real friction.

  • Field and On-Site Teams

    Work happening away from a desk, often with poor signal, where offline capability is the whole point.

  • Fintech and Wallets

    Products needing biometrics, secure local storage and a flow that feels trustworthy at every step.

  • Marketplaces and Booking

    Two-sided products where notifications and quick repeat actions drive the experience.

  • Health and Habit Tracking

    Apps that depend on sensors, daily reminders and data that accumulates to become useful.

  • Companion Apps

    A focused mobile counterpart to an existing web product, doing the few things that suit a phone.

What you receive

What the App Project Delivers

Deliverables follow the agreed scope. A typical app project may include:

  • Scope and feature definition for the first release
  • User flows and navigation map
  • Wireframes and high-fidelity screens for both platforms
  • Interactive prototype
  • Design system and component library
  • Application build for iOS and Android
  • Back-end, API and database work
  • Push notification setup
  • Beta builds via TestFlight and Play internal testing
  • Device and OS compatibility testing
  • Store listings, screenshots and metadata
  • Submission and review handling
  • Crash and error monitoring
  • Source code in your own repository
  • Signing credentials in your own developer accounts
  • Release and maintenance plan
Client project management

How we manage app design & development projects

The delivery method stays visible to both teams. Scope, responsibilities, feedback, approvals and handover are documented from the start.

  • Written scope and responsibilities

    We document deliverables, responsibilities, dependencies, review points and exclusions before production begins, so every participant works from the same agreed scope.

  • One shared project workspace

    Files, notes, decisions, links and current priorities stay in one shared workspace, giving both teams a consistent source of project information.

  • Weekly status and next actions

    Each week we record completed work, current tasks, blockers, decisions required and the next review point, keeping progress visible without constant meetings.

  • Structured feedback and approvals

    Feedback is consolidated by the client decision owner, reviewed against the agreed objective, then recorded before the next production stage begins.

  • Documented scope changes

    Requests outside the approved scope are documented with their impact on timing, effort and dependencies before either team commits to the change.

  • QA, handover and next steps

    Before handover, we review agreed acceptance criteria, test required journeys, document remaining actions and confirm ownership for launch or ongoing support.

Working instructions

What we agree with the client at kickoff

  • Nominate one client decision owner for consolidated approvals.
  • Share required access, brand assets and source material before the relevant stage begins.
  • Return consolidated feedback against the agreed review date whenever possible.
  • Use the shared workspace for decisions so important context is not split across channels.
  • Raise blockers and changing priorities early so timeline or scope impact can be reviewed before work continues.
Frequently asked questions

App Design & Development questions we are asked most

Yes. Most projects use a single cross-platform codebase serving both, which keeps the two versions consistent and reduces cost. Where a product depends on platform-specific capability or heavy performance, we will recommend native builds instead and explain why.

Start with the first release

Let’s work out what version one should actually contain

Most app projects go wrong by trying to launch with everything. The useful conversation is about what the first release must do to be worth installing.

Tell us who the app is for, what they would do with it, and what you have already decided.

Straight advice on whether you need an app. Your accounts, your code.