Mobile Apps

Mobile app development services cover the full lifecycle of building a professional application for iOS, Android, or both platforms. At Rare Crew, this includes: discovery and requirements analysis, UI/UX design, development, QA testing, App Store and Play Store submission, and post-launch support. We build iOS-native, Android-native, cross-platform (React Native, Flutter, Avalonia), and Progressive Web Apps. All apps are GDPR and CCPA compliant, enterprise-ready, and built with security best practices from day one.

A basic mobile app can be developed by anyone with some experience with mobile platforms and coding. The point where it gets difficult is the quality of the mobile apps and their usefulness for businesses in areas such as information service, customer support, or generating leads. Robust mobile development projects require years of experience in the field, great project management, and design thinking skills.

As far as anyone can tell, the future of mobile app development is bright. Mobile apps are integrated with artificial intelligence, use the cloud as a backup, protect personal and company data, automate workflow, and are used in every day life. Basically, apps are using every new and promising technology, and can make our lives easier. That’s also the reason why this area attracts investors.

When evaluating a mobile app development partner, look for: verified client reviews on Clutch or G2 (not just testimonials on their own site), specific experience in your industry, clear communication of timeline and pricing before contracts are signed, and evidence of post-delivery support. Rare Crew has 30+ verified reviews on Clutch with a 4.9/5 rating, 14+ years of enterprise app delivery, and a 96% client return rate. We are GDPR/CCPA compliant, ISO 27001 certified, and work with named project managers — not anonymous offshore teams.

Mobile app development costs at Rare Crew depend on platform, complexity, and integrations required. A well-scoped enterprise app with core functionality typically ranges from €40,000 to €120,000. Apps with complex integrations, offline capability, real-time data sync, or deep device features range from €120,000 to €300,000+. All our apps include GDPR and CCPA compliance by default — no additional cost. We provide a fixed-price or time-and-materials estimate after an initial scoping session. There are no hidden fees — any scope change is formally documented and repriced before work proceeds.

You can check our portfolio of clients and reviews of our services on our Clutch profile. Unfortunately, not every project can be showcased to the public. We have established confidentiality between our clients as we protect the information shared with us.

Timeline at Rare Crew depends on platform and scope. A basic enterprise mobile app with core functionality typically takes 3 to 5 months from kickoff to App Store/Play Store submission. A complex app with real-time data, offline sync, third-party integrations, or custom authentication takes 6 to 12 months. We use Agile with 2-week sprints, so you see working screens and features within the first 4 weeks. Timeline and milestone plan are provided during the scoping phase before any commitment.

The right choice depends on your users and budget. If your users are enterprise employees on company-managed devices, the device mix in your organization guides the decision. For consumer-facing apps, iOS users show higher engagement in Western markets; Android has broader global reach. Cross-platform development using React Native, Flutter, or Avalonia typically reduces cost by 30–40% compared to two separate native apps, with minimal performance trade-off for most enterprise use cases. Rare Crew recommends cross-platform for the majority of new enterprise mobile projects unless deep native hardware integration is required.