React Native app development cost in 2026
React Native loyalty MVP: EUR 18,000 - 28,000; commerce app with integrations EUR 35,000 - 55,000; IoT/BLE or medical compliance app EUR 45,000 - 80,000. GMI Software: initial estimate in 48h, fixed price after DDT.
What affects mobile app cost?
React Native app cost is not “screen count”. It is feature scope, backend integrations (REST, GraphQL), in-app payments, push notifications, offline mode, compliance (GDPR, PCI, medical MDR) and quality of the existing API the app connects to.
React Native ships iOS and Android from one codebase - the 30-40% savings vs dual native is a real number from GMI projects. But if backend does not exist or needs rewriting, app cost grows by the NestJS/Medusa layer - hence one partner for mobile and API.
Poland nearshore vs US rates: at the same seniority typically 30-50% lower hourly rate, CET overlap and US East Coast mornings. EUR/USD invoicing, English delivery - GMI standard for EU, UK and US clients.
Ranges by app type
Loyalty MVP (account, points, push, basic catalogue): EUR 18,000 - 28,000. Timeline 3-4 months. Needs ready API or simple backend.
Commerce app (cart, payments, headless/Medusa integration, offline cache): EUR 35,000 - 55,000. Timeline 4-6 months. The SFD case sits in this segment with peak-traffic hardening.
B2B app (price lists, limits, approval workflows, ERP sync): EUR 45,000 - 70,000. Needs stable API and regression tests for business rules.
IoT/BLE, medical or financial compliance (audit trail, encryption, certification): EUR 45,000 - 80,000+. Each regulatory requirement is a separate QA and documentation block.
Project phases and what is included
Discovery (DDT): 1-3 weeks, EUR 3,500 - 12,000 depending on complexity. UX mocks, architecture, integration list, test plan and fixed-price build quote.
Build: 2-week sprints, demo each iteration, code review, E2E tests (Maestro/Detox), CI/CD via Expo EAS. Backend in scope when agreed in DDT - NestJS, ERP integrations, Medusa API.
Release: App Store and Google Play submission, compliance review (privacy policy, data safety form), push setup (FCM/APNs), crash-free monitoring (Sentry). GMI guides clients through first submission and updates.
Post launch: run EUR 2,000 - 6,000/month (SLA, monitoring, small iterations) or dedicated developer from EUR 5,200/month. We plan Expo SDK and React Native upgrades 1-2 times per year.
Comparison: nearshore, US agency, freelancer
Freelancer: lower rate, but without QA, PM and architect delay and rework cost rise. Makes sense on very small scope (1-2 screens, ready API).
US agency: 150-250 USD/h, same scope as GMI can cost 2x more. Time overlap with Poland can be worse; delivery quality depends on the team, not the country.
GMI nearshore (Poland): EUR/USD fixed price after DDT, 50+ store apps, Clutch 4.9★, full code handover. One partner for React Native, NestJS/Medusa backend and release - less vendor ping-pong.
React Native app estimate
Prepare a short brief: app type, integrations, store publication deadline. GMI replies with ranges within 48h; full fixed-price offer after DDT.
Mobile apps service: https://gmi.software/services/mobile-apps
Sources and references
PayScale - developer rate benchmarks: https://www.payscale.com
Expo EAS pricing: https://expo.dev/pricing
GMI mobile apps service: https://gmi.software/services/mobile-apps
Frequently asked questions
- How long for an MVP?
- Typically 3-5 months to store production with RN plus Expo, depending on integrations and API readiness. B2B with ERP: 5-7 months.
- Does the cost include backend?
- Depends on DDT scope. GMI often delivers React Native plus NestJS/Medusa in one fixed price - one partner, shared TypeScript types, lower integration risk.
- What does app maintenance cost after launch?
- SLA with monitoring and small iterations: EUR 2,000 - 6,000/month. Dedicated developer: from EUR 5,200/month. We plan OS and Expo SDK upgrades proactively.
- Can I get a fixed price for the app?
- Yes - after DDT we issue a fixed-price guarantee on agreed scope. Technical blockers inside scope are on GMI.
Content updated: July 2, 2026