724.ONE builds secure, scalable mobile apps for startups and enterprises from first sketch to App Store launch. 12+ years engineering iOS, Android, and cross-platform products that survive contact with real users.
From native iOS builds to enterprise-grade backend architecture, our team delivers the full stack engineered for App Store approval, scale, and security compliance from day one.
Swift-built apps optimized for App Store approval, performance, and Apple's latest OS standards no rejected builds, no rework cycles.
Kotlin-based apps engineered for device fragmentation, Play Store compliance, and battery-efficient performance across thousands of Android configurations.
Flutter and React Native builds that cut development cost by up to 40% without sacrificing native-grade speed or UI fidelity.
Scalable, compliance-ready apps built for HIPAA, SOC 2, and GDPR requirements engineered to integrate with your existing enterprise systems.
Apps with built-in machine learning, personalization, and predictive features the technical edge that turns a functional app into a retention engine.
Post-launch monitoring, OS-update compatibility, and performance tuning so your app keeps running and ranking long after day one.
You get a detailed cost breakdown before development starts no vague estimates, no surprise invoices halfway through the build.
No account managers relaying messages. You talk to the engineers building your app, with daily standups and weekly demos.
Everything we build is yours on delivery — full source code, design files, and intellectual property, with zero licensing strings attached.
OS updates break apps. We monitor, patch, and maintain yours after launch so a new iOS release doesn't become your emergency.
Encrypted data pipelines, secure authentication, and compliance-ready architecture (HIPAA, GDPR) from the first sprint, not the last.
Agile milestones with visible progress every two weeks you always know exactly where your app stands, never guessing at launch dates.
Are You Ready to Bring Your Ideas to Life? Let’s Build Together!
A basic MVP typically runs $1,000–$5,000, while a full-featured enterprise app ranges from $3,000–$10,000+. Cost depends on platform choice, feature complexity, and backend integrations. 724.ONE provides a fixed-scope quote after a free discovery call.
A simple MVP takes 8–12 weeks. A mid-complexity app with custom backend and third-party integrations typically takes 4–6 months. Enterprise apps with compliance requirements (HIPAA, SOC 2) can run 6–12 months. You'll get a sprint-by-sprint timeline before work starts.
Both. We build native iOS (Swift) and native Android (Kotlin) apps, plus cross-platform apps using Flutter or React Native when speed-to-market and budget matter more than platform-specific performance.
You do fully. Every project includes complete source code, design files, and intellectual property transfer at delivery, with no licensing fees or ongoing dependencies.
Yes. Every engagement includes a post-launch support window covering bug fixes and OS-compatibility updates, with ongoing maintenance plans available for ongoing monitoring, performance tuning, and feature updates.
Yes. We work across US, UK, Canadian, and Australian time zones with overlapping working hours for daily standups, and we build to regional compliance standards (HIPAA, GDPR, PIPEDA) depending on your market.
