Mobile app development for iOS, Android and web.

We build iOS and Android apps, with a web version where the product needs one. The backend, device testing and store submission are planned with the screens, in accounts your business owns.

iOS, Android or a responsive web app?

The right platform depends on the behavior you need to support. A customer portal people open now and then may work well in a browser. A product people use all day may benefit from device integration and an app installed on the phone. We work out those requirements before we commit to a native or shared approach.

Choosing mobile also brings release and support work. You need developer accounts, privacy information, store assets and a process for answering review questions. We put those in the launch plan from the start, so nobody finds them as leftover admin after the code is finished.

What one shared codebase can and cannot simplify

A shared approach can reuse much of the application logic and interface work across iOS and Android. It still needs device testing and platform-specific decisions. Permission prompts, navigation behavior, integrations and release configuration can differ between the two platforms.

Web support has to be designed on purpose too. A narrow phone interface does not always make a good desktop workspace, especially for operators who manage many records. We decide which journeys can be shared and which need a different presentation.

Choose the delivery approach deliberately

Approach
Responsive web application
When to consider it
A link-based workflow without essential device integration
Questions to resolve
Browser behavior, repeat use and access needs
Approach
Shared iOS and Android build
When to consider it
Similar journeys across both mobile platforms
Questions to resolve
Native integrations and platform-specific testing
Approach
Platform-specific implementation
When to consider it
A requirement depends strongly on one platform
Questions to resolve
Separate maintenance, release work and ownership

One shared build still needs platform-specific release work

Release responsibilities

Area
Customer workflow
Shared work
Common UI and business rules
Platform-specific verification
Navigation, keyboard, safe areas and accessibility on target devices
Area
Permissions
Shared work
Purpose and fallback behavior
Platform-specific verification
iOS and Android permission prompts and denied states
Area
Payments and links
Shared work
Entitlement and routing rules
Platform-specific verification
Store policies, deep links and purchase restoration where applicable
Area
Release
Shared work
Build and acceptance checklist
Platform-specific verification
Signing, store records, review responses and release approval

The backend is part of mobile app development

A mobile interface depends on accounts, data and what the server does. We follow sign-up, the core task and any payment or notification through the connected systems. An app that opens without a problem can still fail to save the work or expose the wrong account information.

Dropped connections matter too. Decide which actions should wait, which can be retried and how the user finds out whether a change was saved. These are product decisions, because repeating a read is different from repeating a payment or booking.

What App Store and Google Play submission includes

We scope the signed release builds, account configuration, store information and review preparation the project needs. Your business controls the Apple and Google developer accounts. The plan should name who supplies screenshots, support details, privacy disclosures and review access.

Expo’s submission documentation treats uploading a build, store review and public release as separate steps. Apple also publishes requirements for completeness, review access and other app behavior. We check the current requirements for your product each time, because a past approval does not guarantee the next one.

  • Confirm the business owns the relevant store and signing setup.
  • Prepare the build and test the agreed journeys on target devices.
  • Complete metadata, privacy information and any reviewer access needed.
  • Submit the version and handle review questions within the agreed scope.
  • Verify the public installation and customer journey after approval.

What changes mobile app cost and timing?

Device integrations, roles, payments, offline behavior and backend readiness affect the build. Supporting both platforms also creates a testing and release matrix. You cannot depend on a launch date that ignores external review or unfinished account setup.

We keep development milestones separate from submission, approval and public availability. Maintenance has to allow for future changes in the operating systems, dependencies and service integrations. Your proposal should say who handles those, and it should not promise that a finished app will never need further work.

Product experience that connects the screens to the work

LifeScribeAI combines voice conversations, a structured memory library and access for family members. UpGig combines employer workflows, candidate information and AI phone screens. Both examples from our work show connected product work of the kind you have to plan for in a mobile app.

For your app, that means testing the complete journey behind each screen. We use our public work to describe that experience accurately, and we agree separately on the platforms, store deliverables and release scope you need.

LifeScribeAI product interface built by Twin Designs & Tech

From our work / LifeScribeAI

LifeScribeAI connects conversational capture, a structured memory library and family access. It is a relevant example of the product and data work behind a personal mobile experience.

Read the LifeScribeAI case study

Before you hire a mobile app developer

Use this to compare an implementation quote with a complete release plan.

  1. Ask which real devices and operating system versions are included in testing.
  2. Identify who owns the store accounts and signing configuration.
  3. Ask whether store metadata, review responses and public release verification are included.
  4. Walk through a failed connection, denied permission and expired session.
  5. Define the backend handover and post-launch maintenance responsibilities.
How we can help

We can build your mobile app.

We can build and prepare your mobile app for release. We plan the iOS, Android and web journeys you need, connect the backend, test on the agreed devices and prepare the store submissions included in your proposal. You keep control of the code, signing configuration and developer accounts.

Book a free consultation

On the project call, we’ll discuss the problem, your existing tools and what TDAT should take off your hands. Then we can define the scope and next steps.

Or call (919) 289-1231

Questions before we start

Can one build support iOS and Android?

Often, yes, and the two can share much of the code. We look at native integrations and platform differences before choosing an approach, and we test the agreed experience on both platforms.

Do you help submit apps to Apple and Google?

Yes. We scope release preparation and submission work in developer accounts your business owns. The stores make their own review decisions, so the agreed release plan treats submission and public availability as separate steps.

Is TestFlight the same as being in the App Store?

No. TestFlight distributes a processed build for testing. Public App Store release requires the separate metadata, review and release process.

Can you take over an unfinished mobile app?

Yes. We review the source, backend, signing configuration and store access before defining a completion plan.

Should my business start with a web app?

It may be the better first step when a browser can handle the customer journey you need. We look at how people will use the product and what it needs from the device before we recommend mobile distribution.