Mobile apps that earn their place on the home screen.
Native iOS, native Android, or one cross-platform codebase — whichever wins on cost, time, and long-term maintainability for your US product.
What we do for US teams
Horizam Tech is the US brand of Horizam, a global engineering group with 100+ senior engineers in the US, Australia, the UAE, and Pakistan. Our US-based mobile practice designs, builds, and ships iOS and Android apps for American startups, scale-ups, and Fortune 500 teams — from the first product brief to a stable, monitored, post-launch system.
Whether your project calls for native Swift on iOS, native Kotlin on Android, or a single cross-platform codebase in Flutter or React Native, our senior engineers pick the stack that fits the product, the timeline, and the long-term roadmap — not the one that is trending this quarter.
Every engagement ships with a US-based account director, US-time stand-ups, and a security posture that meets SOC 2 and HIPAA requirements for healthcare, fintech, and other regulated US industries.
Everything in scope for mobile app development.
Native iOS development
Swift, SwiftUI, and UIKit. We ship iPhone and iPad apps tuned for the latest OS releases, Apple silicon, and the Apple design guidelines US users expect.
Native Android development
Kotlin, Jetpack Compose, and modern Android architecture. Pixel-perfect across OEM skins, with deep links, widgets, and platform-specific integrations.
Cross-platform with Flutter
Single Dart codebase for iOS, Android, web, and desktop. Ideal for MVPs and design-led products that need pixel parity across platforms.
Cross-platform with React Native
TypeScript + React Native for teams that want to share code with an existing web stack. New Architecture ready, with Expo and bare workflows.
App Store & Play Store launch
End-to-end submission, ASO metadata, screenshots, review response, and rollout strategy. We handle the Apple and Google bureaucracy so you do not have to.
Mobile DevOps & observability
Fastlane, Bitrise, GitHub Actions, Sentry, and Datadog wired in from day one. Crash-free sessions, ANR rates, and release health visible in one dashboard.
How we ship mobile app development.
Discover
Two-week product sprint. Personas, jobs-to-be-done, and a fixed-fee proposal with explicit assumptions — signed before a line of code is written.
Architect
Stack selection (native vs cross-platform), module boundaries, offline strategy, auth model, and a security plan reviewed by a senior staff engineer.
Design & prototype
Clickable Figma covering every flow, edge case, and empty state. Approved by stakeholders before engineering starts.
Build in two-week sprints
Weekly demos, Linear-tracked work, and a direct Slack channel. Each sprint ends with a TestFlight or internal track build you can install.
QA, security, and compliance
Automated UI tests, manual exploratory QA, dependency scanning, and a SOC 2 / HIPAA control review before public submission.
Launch & 30-day hyper-care
Phased rollout, store submission, and 30 days of in-production triage with a named on-call engineer. 98% of US clients renew.
What you walk away with
- Production iOS app, live on the App Store
- Production Android app, live on Play Store
- Clickable Figma source of truth
- CI/CD pipelines (Fastlane + Bitrise / GitHub Actions)
- Crash, ANR, and release-health monitoring
- Architecture decision records (ADRs)
- Post-launch runbook and 30-day hyper-care window
Tech we reach for
Where we typically deploy
- Fintech & banking
- Healthcare & telehealth
- B2B SaaS & field service
- Marketplaces & consumer
- Logistics & on-demand
Mobile App Development questions
The questions US teams ask us most often about this engagement.
Do you build native or cross-platform apps?
Both. We recommend native Swift/Kotlin for performance-critical, platform-specific products and Flutter or React Native when speed-to-market and a single team are the priorities. We pick based on your product, not our preference.
How long does a typical US mobile app take?
An MVP usually ships in 12–16 weeks; an enterprise engagement is 6–9 months. We share a milestone plan and a fixed monthly retainer in the proposal.
Can you sign a BAA for HIPAA apps?
Yes. We are HIPAA-aware, sign Business Associate Agreements on request, and routinely deploy to US-only AWS and GCP regions.
Do you handle App Store and Play Store submissions?
Yes. We prepare the metadata, screenshots, privacy details, and review responses, and manage the rollout and phased release on both stores.