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Mobile app development native quality on both stores, from one codebase

iPhone and Android apps from one codebase, with the accounts, backend and store review handled.

At a glance

  • React Native + Flutter, one codebase, two stores
  • PWA when an install isn't worth it
  • Offline-first sync
  • Push, deep links, store submission
  • Backend and APIs in-house

What a typical engagement includes

  1. Platform decision first: native, cross-platform, or PWA, with the reasoning and the cost difference in writing
  2. Product and interface design for both platforms (see /services/ui-ux-design)
  3. The build in React Native or Flutter, typed end to end
  4. Offline-first data layer with background sync and conflict handling
  5. Push notifications and deep links wired to real triggers, not broadcast blasts
  6. Backend and APIs in-house: auth, database, payments, admin, integrations
  7. App Store and Google Play submission: listings, screenshots, privacy declarations, review responses, signing set up inside your own accounts
  8. Release management: staged rollouts, over-the-air updates where the platform allows, crash reporting, versioning
  9. Handover documentation, with ongoing releases available on a Care Plan

Mobile apps, in detail

React Native and Flutter apps, or a PWA when an install is not worth it. Offline-first sync, push, store submission, backend and APIs in-house.

Two things sink mobile projects, and neither one is the code. The first is the decision itself: a business funds an app its customers were never going to install, when an installable mobile web experience would have done the job for a fraction of the money. The second is the year after launch, when a store rejects an update, a signing certificate expires, and the backend belongs to a vendor who has moved on.

We work at both ends, and we build the backend ourselves. The API your app talks to is never someone else's problem.

What mobile app development means in our hands

We'll tell you when you don't need an app. A native app earns its place when you need the camera, background location, offline work, biometrics, or a habit that push notifications genuinely support. When the honest answer is "people will open this twice a year", we build a progressive web app instead: installable, push-capable, no store review, one thing to maintain. That conversation happens before anyone writes a proposal.

Cross-platform, held to native standards. React Native or Flutter gives you both stores from one codebase, and we hold it to platform behaviour: correct navigation, the Android back button doing what Android users expect, animation that keeps its frame rate on a mid-range phone rather than the flagship on our desk. We test on real, cheap devices.

Offline-first, not offline-someday. Basements, job sites, lifts, trains. Our apps write locally first and sync when the network returns, with queued writes and a conflict policy decided during design rather than discovered in production.

The stack and the approach

  • Cross-platform: React Native (Expo) or Flutter, chosen for the app rather than for our convenience
  • PWA path: Next.js 16 and TypeScript, installable and push-enabled, on the same stack as our webapps
  • Backend: Postgres with Drizzle, Supabase auth with row-level security, typed APIs shared with your web product so the two never drift
  • Payments: Stripe or Razorpay, with the store billing rules for digital goods handled correctly
  • Quality: testing across old and new hardware, WCAG 2.1 AA including VoiceOver and TalkBack, crash and performance monitoring from day one

What this looks like in practice

A field operations app. Technicians, drivers, or inspectors working where the signal isn't: jobs, forms, photos, and signatures captured offline and synced the moment a connection returns, feeding the same database as the office dashboard or CRM.

A customer-facing app on top of an existing business. Accounts, bookings or orders, tracking, saved details, and push that brings people back, sitting on the web product or store you already run. This shape often starts as a PWA and graduates to the stores once usage proves the habit is real.

Pricing

Mobile work is scoped per project. A PWA and a two-store app with offline sync and a new backend behind it are different builds, and a price list flattering both would be dishonest. Tell us what the app has to do; after a short call you get a fixed-price scope in writing. Contact us for a quote.

Planning the work

Give users a reason to install the app and return to it.

What to cover in the scope

  1. Define the core mobile tasks and decide which need device capabilities.
  2. Plan accounts, notifications and unreliable network conditions.
  3. Include release, account ownership and ongoing maintenance in the project plan.

What helps us plan

Share the intended users, existing backend and any device features the app depends on. Confirm target platforms and store-account access before estimating the full build.

How to judge the result

Test real journeys across device sizes and connection states. Installation is only the beginning; the app has to remain useful, understandable and supported.

From your first message to every month after.

  1. Tell us what to fix

    A few lines on the form, or ask the assistant. A person replies within 4 business hours.

  2. A call, then your plan

    What to fix first and why, what we'd build and run, the price and the go-live date, in writing within two business days.

  3. We build and launch

    A website takes 2 to 6 weeks, a web app 8 to 16. Tested on real phones before launch.

  4. We run it, every month

    Hosting, updates and the systems kept working. Monthly plans cancel any time.

Straight answers before you sign

  • You own everything.

    Your code, your domain, your accounts and your data.

  • One contract, your currency.

    You sign with Redenn Informatics Pvt. Ltd. (India) and are invoiced in your own currency. North American work is led from our Brampton, Ontario office (Redenn Informatics Inc.).

  • Tested on real phones.

    Built mobile-first, load time measured before launch, designed to WCAG 2.1 AA.

  • Prices published.

    Websites from $1,200, web apps from $15,000, monthly systems $149 to $249/mo plus setup from $500, and care from $49/mo.

    Quoted and invoiced in your own currency by Redenn Informatics Pvt. Ltd. (India); pay by card through Razorpay or by bank transfer.

    See every starting price

Questions about mobile apps

  • Mobile work is scoped per project and quoted as one fixed price, because two apps that look similar on screen can differ enormously underneath. The big cost drivers are whether you need store apps or a progressive web app, how much has to work offline with synced data, whether payments are involved, and how much backend we're building — authentication, database, admin panel and integrations are all built in-house rather than bolted on. You approve a written scope before anything is built, so the number you agree to is the number you pay, with no surprise add-ons.

Tell us where customers slip away. We'll write the plan.

A person replies within 4 business hours. Your written growth plan follows within two business days.

Or call +1 437 524 3001 or toll-free +1 888 905 4003, or email hello@redenn.com.