SFD
Shopping and loyalty in every pocket.
Commerce, loyalty, and motivation in one app customers use every day.
- Mobile commerce
- Loyalty programme
- Push and activity
React Native development agency
React Native app development services for iOS and Android
Hire React Native developers — or one accountable product team. We design and grow iOS and Android products with a solid backend, analytics, and store launch.
- 100,000+
- SFD downloads
- 100,000+
- My World of Books downloads
- 4.9
- SFD App Store rating
- Top 1
- Hi! School in Education
Products working in the real world
Proof before promises.
A mobile app matters when it improves sales, retention, or daily operations. These products show four different value models.
My World of Books
Thousands of books, always within reach.
Catalog, offers, coupons, and loyalty connected to an everyday bookstore experience.
- Catalog and search
- Offers and coupons
- Store availability
BERG System
In the field. On time. Fully in control.
A mobile CRM designed for field sales, poor connectivity, and zero-training workflows.
- Accounts and tasks
- Reports and documents
- Offline sync
Hi! School
Education that engages students and helps schools work.
Lessons, tasks, communication, and learning plans in one mobile product.
- Tasks and lessons
- Messages
- Progress and grades
For different business models
We match the product to how your business creates value.
Commerce and loyalty
Shopping, loyalty, personalisation, and an owned channel.
Field operations
Offline workflows, service, sales, and documents on the move.
Education
Learning, communication, tasks, and engaging experiences.
AI and data
Assistants, automation, and recommendations inside the product.
Architecture that scales
The app is only one part of the product.
We connect the mobile experience with the backend, business systems, and analytics, so you do not have to coordinate several vendors.
Mobile app
React Native for iOS and Android
Backend and API
Logic, data, and authentication
Integrations
ERP, CRM, payments, and other systems
Analytics
Events, funnels, and retention
Value at every stage
From acquisition to retention.
Acquisition
Reach the right users.
Activation
Reach product value quickly.
Engagement
Relevant triggers and messaging.
Revenue
Purchases, subscriptions, and workflows.
Retention
Data-led iteration that keeps users.
Why React Native
One product. Two platforms. One release rhythm.
React Native is our default for most B2B and B2C products. If PWA, Flutter, or native is a better fit, we will say so before development.
- One codebase for iOS and Android
- Access to native capabilities
- Faster releases and simpler maintenance
- Natural fit with React and TypeScript
Delivery process
From decision to outcomes.
- 01
DDT
Goals, users, risks, integrations, and success metrics.
- 02
UX and prototype
Test the critical journeys before coding.
- 03
Build
Mobile, backend, integrations, and QA in one cadence.
- 04
Launch
App Store, Google Play, analytics, and monitoring.
- 05
Grow
A roadmap driven by data and user behaviour.
Typical ranges
Budget follows risk, not screen count.
After DDT you receive a defined scope and fixed price. These ranges help you assess the likely scale before the first call.
Loyalty / B2C MVP
€18k–€28k
3–5 months
Commerce with integrations
€35k–€55k
5–8 months
CRM / operational product
€45k–€70k
6–10 months
Local delivery pilot
Mobile app development for San Francisco product teams.
Work with a Poland-based product team through remote delivery, shared checkpoints, and focused workshops when the project needs them.
FAQ
Common questions.
How much does a React Native app cost at GMI Software?
Ballpark: loyalty MVP EUR 18-28k, commerce app with integrations EUR 35-55k, full CRM-style mobile EUR 45-70k. Initial estimate within 48 hours; fixed price after DDT.
Is React Native production-ready?
Yes. The SFD app built by GMI Software in React Native hit 100,000+ downloads and 4.9★ on the App Store (Mobile Trends Awards 2025 Commerce nomination).
Can I hire React Native developers or a complete product team?
Both models are available. We can extend an established team with React Native specialists when you already own the backlog, architecture, QA and release process. For a new product, our strongest model is one accountable team covering discovery, UX, app, backend, QA and store release.
How long does mobile app development take?
A simpler production MVP usually takes 3-5 months. Apps with complex integrations, offline workflows, or multiple user roles typically take 5-10 months. DDT turns that range into a delivery plan by resolving scope, UX, architecture, and risk first.
Do I own the source code after delivery?
Yes. GMI Software transfers full IP and source code after project completion. No vendor lock-in.
Do you work with international clients?
Yes. We deliver for companies across the EU, UK and US with English as the primary project language.
React Native or Flutter in 2026?
For most B2B/B2C products we default to React Native + Expo when you already run React/TypeScript on web. Flutter fits better when your in-house team already ships Dart.
Ready to build the right product?
Let us build an app that grows with your business.
Tell us about the goal, users, and current systems. We will come back with a practical next step.
Talk about your product