App development company in Missouri

Cross-platform development suits many apps built around accounts, forms, bookings, payments or content. React Native shares most code across iOS and Android while using each platform’s own interface components. It uses JavaScript or TypeScript, so web developers can contribute, and some logic can be shared with a React website.

Flutter is another cross-platform option. It uses Dart and draws its own interface, which suits a heavily branded design where you want screens to look identical across platforms. Your team would need to be comfortable working in Dart and maintaining that interface.

Native development uses Swift for iPhone and Kotlin for Android. It fits apps built around deep device features, heavy graphics, complex background work or new platform features at launch, though you have separate codebases to build and maintain. We usually choose React Native and add native modules where a feature needs them; when deep device features drive the product, we choose native development.

For a state or local government app, the US accessibility rule calls for WCAG 2.1 Level AA. We set up the screen design and accessibility testing against that standard as part of the build, so the work covers the app’s screens and flows before release.

The checkout also needs to match what you sell. Apple requires in-app purchase for digital content, features and subscriptions used in the app. For physical goods or services used outside it, we set up another payment route, such as a card gateway.

These details help us agree a useful first release.

• Systemslist your website, CRM, booking system, ERP software and payment provider; note which have an API and who holds admin access.
• Privacy policyhave a policy that matches the data the app collects, ready to link from the app and its store listing.
• Apple account deletionidentify whether users can create an account, so the app can let them start deleting it inside the app.
• Google Play deletionplan an in-app deletion path and a web link for deletion requests if users can create accounts.
• First-release taskswrite down what users must do in the order they will do it, from the first action onwards.

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  Putting sign-up first

  let people use an app without logging in when it has no significant account-based features. Apple’s guidelines ask for that access, and people can see the value before registering.

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  Leaving access with an agency

  keep developer accounts, signing access and code repositories in your business’s name, so moving the app later is less difficult.

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  Adding an SDK without updating privacy answers

  include data collected by third-party analytics or advertising SDKs in Google Play’s Data safety form.