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Rivac Labs
Engineering & Software Development

Mobile App Builder

Shipping a mobile app that customers actually keep on their home screen means getting the platform conventions right, not just porting a web layout onto a phone. We build native iOS and Android apps, or cross-platform apps in React Native or Flutter when a shared codebase genuinely fits the product, choosing the approach based on your performance needs, team size, and release cadence rather than defaulting to whichever is trendiest. This is the right service when you're taking a web product mobile for the first time, when an existing app's crash rate or store reviews are dragging on growth, or when you need feature parity across iOS and Android without doubling the engineering headcount. You get an app built for the store review process from day one, not one that gets rejected on submission.

How We’d Approach This

A clear, staged plan — not a black box

  1. 1

    Assess your target platforms, existing codebase, and release constraints to pick native vs. cross-platform honestly.

  2. 2

    Build a working core flow — onboarding, main screen, one key action — to validate the technical approach on-device.

  3. 3

    Review the prototype with you on real hardware, checking performance, gestures, and platform-specific behavior.

  4. 4

    Complete the remaining app surface, then prepare it for store submission with the release process built in.

What You Get

Deliverables from this engagement

  • Native or cross-platform app source code, fully documented
  • App running on both target platforms tested on real devices
  • Store-submission-ready build with assets and metadata
  • Crash reporting and analytics wired in from launch

Six Ways We Could Architect This

Different engagement, different build — pick the shape that fits

There’s more than one way to deliver on this service. Browse a few of the ways we’d structure the work, depending on your speed, budget, and integration needs.

Ready to get started?

Tell us what you’re trying to get done and we’ll help you find the highest-leverage place to start — scoped small enough to prove itself before you commit to anything bigger.

Talk to us about Mobile App Builder

Most engagements like this start as a $500–$2,500 pilot — see full pricing.

Questions? Book a free call