United States:
Transform Digital LLC
44 Montgomery Street, Suite 300
San Francisco, CA 94104
Mobile App Development
Mobile App Development Services for iOS & Android
SDLC Corp builds custom iOS, Android, and cross-platform applications for startups and enterprises worldwide. From concept to post-launch support, secure, scalable, and engineered around real business outcomes.
ISO-Certified Development Process
Dedicated Project Manager on Every Build
On-Time Delivery, Guaranteed in Writing
500+ Apps Delivered
10+ Years in Mobile
98% Client Retention
25+ Countries Served
4.9 Clutch Rating
What We Build
Our Mobile App
Development Services
End-to-end mobile development from native iOS and Android to cross-platform Flutter and React Native. Full lifecycle: discovery, design, development, QA, and launch.
01 Native iOS
iOS App Development
Swift + SwiftUI + XcodeSwift and SwiftUI for iPhone and iPad, built to Apple HIG standards with full App Store submission. From concept to live on the App Store.
- Swift & SwiftUI
- TestFlight QA
- App Store submission
- In-app purchases
02 Native Android
Android App Development
Kotlin + Jetpack ComposeKotlin and Jetpack Compose for phones, tablets, and foldables, optimised for Google Play policies and Material Design 3 guidelines.
- Kotlin + Jetpack
- Google Play submission
- Offline-first architecture
- Material Design 3
03 Cross-Platform
Cross-Platform Development
Flutter + React NativeOne codebase for iOS and Android. Flutter for custom UI; React Native for JS teams. Cuts cost 30 to 50% vs two native builds without sacrificing quality.
- Flutter / Dart
- React Native New Arch
- Single codebase
- 30 to 50% cost saving
04 PWA
PWA & App Modernisation
React + Service WorkersInstallable web apps with native-like UX and offline support. We also rebuild outdated apps after a thorough codebase audit and technical review.
- Service workers
- Push notifications
- Offline capability
- App modernisation
Industry Experience
Mobile App Development
for Your Industry
Domain knowledge built into every project. We understand compliance requirements, user expectations, and sector-specific architecture that drives real business outcomes.
Discuss Your Industry
Healthcare
Hover to exploreHealthcare
Patient portals, telemedicine, scheduling, and remote monitoring with HIPAA-aware architecture and audit logging.
Learn About Healthcare
FinTech
Hover to exploreFinTech
Digital wallets, investment platforms, and BNPL apps with PCI-DSS considerations and biometric authentication.
Learn About FinTech
eCommerce
Hover to exploreeCommerce
Product catalogues, checkout flows, Stripe and Apple Pay integration, loyalty programmes, and recommendation engines.
Learn About eCommerce
Real Estate
Hover to exploreReal Estate
Property search, listing management, virtual tours, and mortgage calculators with map integration, real-time alerts, and agent-buyer communication built in.
Learn About Real Estate
EdTech
Hover to exploreEdTech
LMS platforms, course apps, and student portals with offline access, video streaming, gamification, and FERPA compliance.
Learn About EdTech
Enterprise & Logistics
Hover to exploreEnterprise & Logistics
Field service, fleet tracking, warehouse tools with offline support, barcode scanning, and ERP/CRM integration.
Learn About LogisticsCase Studies
Real Projects.
Measured Outcomes.
See how SDLC Corp delivers real results. Each case study shows the problem, what we built, the tech stack, and measurable outcomes.
Buy Now Pay Later App
A seed-stage US FinTech needed a compliance-ready BNPL app with real-time credit decisioning and merchant API integration.
- Real-time credit decisioning engine
- PCI-DSS-aware architecture
- Plaid bank connectivity integration
14 wksLaunch to market
$2M+Q1 transactions
650/dayAvg transactions
FinTechCorporate Website Redesign
AdCoop needed a full redesign of their corporate platform with a stronger brand identity and a lead generation funnel that converts.
- Full UX and visual redesign
- PageSpeed score lifted to 98
- Lead generation funnel rebuild
3xLead growth post-launch
98PageSpeed score
6 wksDelivery timeline
Corporate WebCross-Platform Travel Booking App
A Series A US travel startup needed flight search, hotel booking, itinerary management, and real-time notifications in one Flutter app.
- Flight, hotel and itinerary management
- Real-time push notifications via Firebase
- Stripe payments and App Store launch
10 wksiOS and Android launch
+35%Booking completion rate
2Platforms, one codebase
Travel TechReady to Build
Turn Your App Idea Into a
Live Product in 18 Days
Talk to our mobile app team and get a scoped estimate, tech recommendation, and delivery timeline in one free call, no obligation.
No commitment required NDA signed on request Response within 24 hours
Technology Stack
Technologies We
Work With
We pick technology around your project goals, not our convenience. Here is what our mobile engineering team works with across 500+ delivered apps.
Mobile Layer
Native and cross-platform technologies powering our iOS and Android apps with industry-leading performance.
SwiftSwiftUIKotlin Jetpack ComposeFlutterDart React NativeJava
Backend & APIs
Scalable server-side architectures and API layers that power the intelligence behind your mobile application.
Node.jsPythonDjango FirebaseGraphQLREST APIs Auth0PostgreSQL
Cloud & DevOps
Enterprise-grade cloud infrastructure with automated CI/CD pipelines and containerised deployments.
AWSGoogle CloudAzure DockerKubernetesTerraform GitHub ActionsFastlane
Payments & Finance
Secure payment integrations, banking connectivity, and financial compliance tools across all app types.
StripePayPalApple Pay Google PayPlaidBraintree Adyen
Communication
Real-time messaging, notifications, voice, and video integrations for user engagement and operations.
TwilioSendGridFirebase FCM OneSignalAgoraPusher WebSockets
Maps & Enterprise
Location services, mapping, and enterprise system integrations that power logistics and field operations.
Google MapsMapboxHERE Maps SalesforceSAPZendesk HubSpot
How We Work
Our Mobile App
Development Process
A structured agile process that reduces risk and delivers working software at every sprint. Each stage ends with a client deliverable and sign-off before we move forward.
01
02
03
Discovery & Scoping
Project brief, feature list, wireframes, and cost estimate. We define what gets built before coding begins.
1 to 2 WeeksUX & UI Design
Figma prototype, design system, and screen-by-screen sign-off before development starts.
2 to 4 WeeksAgile Development
Working demo every two-week sprint. You review progress throughout, not just at final delivery.
8 to 20 Weeks04
05
06
QA & Testing
Device matrix testing, security validation, QA report and UAT sign-off before App Store submission.
2 to 4 WeeksLaunch & Submission
Live on App Store and Google Play. We handle metadata, privacy labels, and staged rollouts.
1 to 2 WeeksMaintenance & Support
OS updates, security patches, bug resolution, and feature development on retainer or per-project.
OngoingPricing Transparency
Mobile App Cost
& Timeline
Honest estimates based on real project data. Ranges reflect our blended global delivery model. US-only engineering typically runs 2 to 3x higher for the same scope.
Simple App
Single Platform
from$10k to $30k
2 to 4 Months- 1 platform (iOS or Android)
- 5 to 8 screens
- Basic auth and user accounts
- Firebase or Auth0 backend
- App Store submission
Most Popular Mid-Complexity
Dual Platform
from$30k to $100k
4 to 7 Months- iOS and Android (native or cross-platform)
- Payment processing (Stripe, Apple Pay)
- Push notifications and real-time features
- Custom backend architecture
- Admin dashboard included
Enterprise
Full Complexity
from$100k+
6 to 14 Months- AI/ML features
- HIPAA/GDPR compliance
- Complex third-party integrations
- Multi-role architecture
- Dedicated project manager
What Increases Cost
- Building for both iOS and Android natively
- Real-time features (chat, GPS, live data)
- Payment processing and financial compliance
- AI, ML, or on-device intelligence
- Complex third-party integrations
What Increases Timeline
- Unclear requirements at project kickoff
- Long approval cycles between stages
- Third-party API dependencies
- App Store review time (1 to 3 business days)
Why Choose Us
Why Businesses
Choose SDLC Corp
From the first scoping call to post-launch support, we are accountable for the complete outcome. One team, full lifecycle, zero hand-offs.
Global Delivery, Your Timezone
Dedicated PMs, async updates, and sprint demos scheduled around North America, Europe, and APAC timezones.
Transparent Pricing
Fixed-scope quotes with itemised estimates. Scope changes are flagged before they are built, no invoice surprises.
Full-Lifecycle Ownership
One team owns wireframe to post-launch maintenance. No hand-offs between separate agencies or teams.
Verified Reviews
4.9 out of 5 across 80+ reviews on Clutch and G2. Independent platforms, not just our own testimonials.
4.7/5Avg App Store Rating at Launch
18 daysKickoff to First Working Build
99.2%Avg Crash-Free Rate at Launch
Built-In by Design
Security & Compliance
in Every App We Build
Security at SDLC Corp is an engineering requirement, not a checklist item added before delivery. Every layer of the stack is built with compliance in mind from day one.
Enterprise-Grade SecurityGDPR · HIPAA · SOC2 Ready
GDPR Compliance
Privacy-by-design, consent flows, data minimisation, and right-to-erasure for EU apps.
HIPAA-Aware
AES-256 encrypted storage, audit logging, role-based access, and BAA support for healthcare.
Secure API Design
OAuth 2.0, JWT auth, TLS 1.3, API rate limiting, and input validation throughout.
End-to-End Encryption
Data encrypted at rest and in transit. No plaintext storage of PII or credentials.
WCAG 2.2 AA
VoiceOver, TalkBack, 4.5:1 contrast, touch targets, and screen-reader labels built in.
Pen Testing
Third-party penetration testing coordinated for enterprise clients before go-live.
Client Feedback
Trusted by Businesses
Worldwide
Our clients range from healthcare clinics to food delivery startups. Every review you read is verified on GoodFirms, where we hold a 5.0 rating across 155 reviews.
Verified
SDLC Corp delivered our telemedicine app on time with clean, scalable code. Their communication was transparent throughout.
Michael Joe Jorge
Healthcare Practice Owner
Verified
The team built our dental clinic booking app exactly to our requirements. Professional, patient, and reliable from start to finish.
Dr. Tannavi Yadav
Dental Clinic Owner
Verified
They developed our full food delivery app for iOS and Android. Quality work, smooth process, and great ongoing support.
Saumya
Food Delivery App Founder
Technical Decision Guide
Native vs Cross-Platform:
Which Is Right for You?
Budget, performance, and roadmap determine the answer. Here is the full comparison to help you choose the right approach.
| Native iOS / Android | Flutter | React Native | |
|---|---|---|---|
| Performance | Highest — direct OS access | Near-native | Near-native |
| Code Reuse | 0% — two codebases | 90 to 95% | 70 to 90% |
| Dev Cost | Higher | Lower | Lower |
| Dev Speed | Slower | Faster | Faster |
| UI Quality | Pixel-perfect, platform-native | Excellent custom UI | Good, some native widgets |
| Best For | Performance-critical apps | MVPs and fast launch | JS teams and SaaS products |
Choose Native When
Maximum Performance
Deep device integration or absolute performance ceiling required.
Our Recommendation
Flutter: Fastest to Market
Our default for most new projects. Polished app on both platforms, launched faster.
Start with FlutterChoose RN When
JavaScript-Heavy Teams
Strong JS/React experience or extending a web product into mobile.
Insights
Mobile App Development
Insights and Guides
Practical guides by our engineering team on frameworks, budgets, and timelines, written for founders and product managers.
FAQ
Frequently Asked
Questions
Everything founders and product teams ask before starting a mobile app project with us.
Ask Us AnythingHow much does mobile app development cost?
Costs range from $10,000 for a simple single-platform app to $250,000+ for a complex enterprise application. Mid-complexity (two platforms, payments, custom backend) runs $30K to $100K over 4 to 7 months. Enterprise with AI or compliance requirements: $100K to $250K+ over 6 to 14 months.
How long does it take to build a mobile app?
Simple apps take 2 to 4 months. Mid-complexity on two platforms: 4 to 7 months. Enterprise apps: 6 to 14 months. Key factors are requirements clarity at kickoff, approval cycle speed, third-party dependencies, and App Store review time.
Should I choose Flutter or React Native?
Flutter is our default for most new projects, offering near-native performance, excellent custom UI, and a Google-backed ecosystem. React Native suits teams with strong JavaScript or React experience or those extending a web product into mobile. Both cut cost 30 to 50% vs two native builds.
What is the difference between native and cross-platform?
Native means separate Swift (iOS) and Kotlin (Android) codebases with highest performance, full platform API access, and higher cost. Cross-platform (Flutter or React Native) uses one shared codebase for both platforms, reducing cost and time by 30 to 50% with near-native performance for most use cases.
What does your development process look like?
Six stages: Discovery/Scoping (1 to 2 weeks), UX/UI Design (2 to 4 weeks), Agile Development in 2-week sprints (8 to 20 weeks), QA/Testing (2 to 4 weeks), App Store submission (1 to 2 weeks), and ongoing Maintenance. Each stage ends with a client deliverable and sign-off.
Do you sign NDAs before project discussions?
Yes. We sign a mutual NDA before any scoping conversation, on request, at no charge. Your ideas, business logic, and requirements stay fully confidential throughout the engagement.
Do you handle App Store and Google Play submission?
Yes. Included in our standard process: metadata, screenshots, privacy labels (Apple), Data Safety sections (Google Play), staged rollouts, and App Store review team responses if required.
What post-launch support do you offer?
Monthly retainer or per-project basis: OS updates, bug resolution with defined SLAs, security patches, performance monitoring, and optional iterative feature development. We recommend a minimum 3-month post-launch engagement.
- Contact Us
Let’s Talk About Your Product
Get expert guidance on scope, architecture, timelines, and delivery approach so you can move forward with confidence.
What happens next?
- We review your requirements
- Strategy call with experts
- Clear roadmap & estimate
- NDA Protected
- Enterprise Grade Delivery
- Global Clients
