Mobile App Development Services by Evolisyss iOS, Android & Cross-Platform Solutions
Evolisyss builds native and cross-platform mobile apps using Swift, Kotlin, Flutter, and React Native. Apps are secured with AES‑256, integrated with Firebase and GraphQL, and optimized for App Store ranking. CI/CD pipelines, UI/UX with SwiftUI and Jetpack Compose, and post-launch ASO ensure scalable performance.
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UX/UI Design
- Interfaces built using SwiftUI for iOS and Jetpack Compose for Android
- Figma prototyping with screen flows, design tokens, and component libraries
- Adherence to WCAG 2.1 accessibility rules (tap targets, color contrast, font hierarchy)
- Cross-platform design systems with Material Design and Cupertino widget logic
- Interaction mapping and native gesture alignment (swipe, drag, tap) per OS behavior
Native iOS and Android Development
- iOS apps built using Swift with Xcode IDE, storyboard or SwiftUI layout
- Android apps developed in Kotlin, structured via MVVM, built in Android Studio
- Integration of native SDKs such as Apple HealthKit, Google Maps, and Firebase Auth
- Use of platform-native architecture patterns (MVC, MVVM) for code separation
- Legacy support via Objective-C (iOS) or Java (Android) for existing modules
Cross-Platform App Development
- Flutter apps using Dart, compiled to native ARM with hot reload and widget trees
- React Native with JavaScript/TypeScript, bridge modules for native API access
- Xamarin (C#) and .NET MAUI for enterprise-grade shared-code apps
- Ionic + Capacitor for fast hybrid MVPs and access to device features via WebView
- Unified codebase delivery for both iOS and Android, with native-like performance
Backend Integration
- Firebase: real-time database, Firestore, and Cloud Functions for serverless logic
- REST APIs for standardized HTTP requests and GraphQL for selective data querying
- Local persistence using Core Data (iOS), Realm, and SQLite
- Secure authentication via OAuth2, JWT, or custom token-based flows
- Encrypted API traffic using TLS and schema validation via Retrofit/Alamofire
Automated Testing and CI/CD
- Unit testing with XCTest (iOS), JUnit (Android), Jest (React Native)
- UI testing with XCUITest, Espresso, and Detox
- Continuous integration via GitHub Actions, YAML pipelines for multi-stage builds
- Deployment automation with fastlane, including metadata uploads and signed builds
- Test coverage reports and crash analytics embedded before every version rollout
App Store Submission and Maintenance
- iOS deployments handled via App Store Connect, Android via Google Play Console
- Metadata optimization, screenshot preparation, version control, and permission setup
- Adherence to App Store Review Guidelines and Google Play Policy Center standards
- Signed .ipa and .aab packages with version tracking and phased release toggles
- Post-release performance monitoring and stability reporting through Crashlytics
ASO Implementation and Updates
- Title, subtitle, and bundle ID optimization for keyword targeting
- Screenshot sequencing and preview video generation (portrait/landscape)
- A/B testing for icon sets, call-to-action labels, and onboarding copy
- Structured metadata updates aligned with seasonal events or major releases
- Review and rating prompts implemented via native libraries to improve ranking
Post-Launch Support, Bug Fixes, and Feature Upgrades
- Active support with SLA-based bug resolution timelines and crash patching
- Incremental feature rollouts following semantic versioning (SemVer)
- Continuous updates to match iOS SDK or Android API level changes
- CI-based rollback plans in case of deployment regressions
- Data backup and migration handling for users on legacy OS versions
Evolisyss delivers platform-specific, secure, and scalable apps – covering business logic, APIs, compliance, and enterprise integrations.
Global Reach & Scalability
Our apps are designed for worldwide users – optimized for multiple regions, languages, and infrastructures. Whether you’re launching a FinTech solution in Europe, an IoT app in Asia, or an e-commerce store in North America, Evolisyss ensures secure, scalable, and reliable performance across the globe.
Swift / Objective-C with Xcode, SwiftUI/UIKit, Apple APIs (HealthKit, Wallet, ARKit, Core Location).
Kotlin / Java with Android Studio, Jetpack Compose/XML layouts, Google APIs (Maps, Firebase, Play Billing, NFC).
Flutter (Dart), React Native (JS/TS), Xamarin (.NET), NativeScript (Angular/Vue) – built for scalability.
API-integrated with CRM, ERP, HRMS; OAuth2/JWT auth; real-time sync via Firebase, Redis, WebSockets.
BLE pairing, NFC tags, MQTT protocols; live sensor visualization; smart home & wearables.
AES-256 encryption, biometric login, 2FA; KYC/AML via Onfido, Trulioo SDKs.
HIPAA/GDPR compliance; HealthKit, Google Fit, FHIR APIs; symptom trackers, reminders, secure chat.
Catalogs via Firebase, Shopify, WooCommerce; Stripe, Apple Pay, Google Pay; real-time orders & push alerts.
Swift, Kotlin, Dart, JS/TS; Xcode, Android Studio; SwiftUI & Jetpack Compose; Firebase, GraphQL, REST, Core Data, Realm.
GitHub Actions, Bitrise, fastlane; XCTest, Espresso, Detox, Jest; error tracking with Crashlytics & Sentry.
AES-256 encryption, OAuth2/JWT, GDPR/HIPAA compliance, encrypted storage (Core Data, Realm, Keychain).
Working With Evolisyss
We don't just take briefs — we decode them. Every contact is treated as the beginning of a clear, standards-backed execution.
Discovery & Planning
Define app objectives, user personas, and feature scope. Platform selection (iOS, Android, or cross-platform) with MVP planning.
UI/UX Wireframing and Interactive Prototyping
High-fidelity Figma designs with annotated flows. Platform-native component logic using SwiftUI or Jetpack Compose.
Native or Cross-Platform Development
Swift (iOS), Kotlin (Android) or shared codebase with Flutter, React Native. Architecture patterns: MVVM, Clean Architecture, or VIPER.
API Integration and Database Connectivity
Backend services via REST or GraphQL. Real-time sync with Firebase, and local storage using Core Data or Realm.
Quality Assurance and Automated Testing
Unit tests (XCTest, JUnit), UI tests (Espresso, Detox). CI/CD setup with GitHub Actions and fastlane.
Deployment to Apple App Store and Google Play
Signed builds (.ipa/.aab), metadata, screenshots, versioning. App Store Connect and Play Console integration for live rollout.
Ongoing Support, Analytics, and App Iteration
Crash tracking via Crashlytics, performance logs via Sentry. Feature updates and SDK compatibility patches across OS versions.
App Store Optimization (ASO) Best Practices
Evolisyss applies structured ASO techniques to improve visibility, conversion, and ranking across both the Apple App Store and Google Play.
App Title and Bundle ID Optimization
Clear, keyword-optimized titles with character-limit adherence (≤30 for iOS, ≤50 for Android). Bundle identifiers aligned with brand and taxonomy.
Strategic Keyword Targeting
Metadata fields optimized for high-search, low-competition queries. Localization of keywords across markets for regional ranking.
Conversion-Focused Visual Assets
Screenshot sequences demonstrating key app flows and UI aesthetics. Preview videos optimized for portrait/landscape formats with auto-play compliance.
A/B Testing of Store Elements
Variant testing for icons, screenshots, CTA headlines, and short descriptions. Data-driven adjustments via Store Listing Experiments and iOS Product Page Optimization.
Ratings, Reviews, and Update Frequency
Native prompt triggers for in-app rating requests (SKStoreReviewController, in-app review APIs). Frequent updates to signal freshness and maintain SDK compatibility.
Ready to start your project? Get in touch with us today.
Contact Us NowOur Plans
Discover our diverse portfolio of cutting-edge projects and innovative solutions.
MVP App
Ideal for Startups, Founders
$3,000
- +Wireframes, core feature set
- +Firebase backend
- +MVP deployment to App Store/Play
Full Mobile App
Ideal for SMEs, SaaS Platforms
$6,500+
- +Native (Swift/Kotlin) or Flutter build
- +API integration
- +Automated testing
Enterprise Build
Ideal for Healthcare, Finance
Custom Quote
- +AES-256 encryption
- +GDPR/HIPAA compliance
- +CI/CD pipelines
- +Custom backend
Native app development using Swift (iOS) and Kotlin (Android) with complete IDE and SDK-level control.
Cross-platform solutions in Flutter and React Native using a single codebase compiled to native ARM.
Full-stack integration with Firebase, REST APIs, and secure storage like SQLite and Realm.
CI/CD pipelines automated via GitHub Actions, fastlane, and multi-stage Bitrise workflows.
Data privacy enforced through AES-256 encryption, OAuth2, and JWT-based authentication.
In-house ASO specialists for bundle ID optimization, screenshot testing, and metadata targeting.
Proven results across verticals: mHealth (HIPAA), FinTech (KYC), Retail apps, and IoT controllers.
Frequently Asked Questions
