Mobile App Development for iOS, Android, and Modern Products
Advenno is a mobile app agency for teams that need iOS, Android, and cross-platform products backed by clear product strategy, reliable delivery, and launch support.
Our Mobile Tech Stack
Mobile Market Growth
Why mobile-first is no longer optional for businesses.
Challenges You Might Be Facing
Fragmented Device Landscape
Thousands of screen sizes, OS versions, and hardware configurations make it nearly impossible to deliver a consistent experience without the right strategy.
Poor App Performance
Laggy animations, slow load times, and unresponsive interfaces drive users to uninstall. Users expect instant responsiveness, and anything less costs you retention.
High Multi-Platform Costs
Building separate apps for iOS and Android doubles your budget and timeline. Maintaining two codebases means every feature takes twice the effort.
User Retention Challenges
Most apps lose the majority of their users within the first few days. Without a thoughtful retention strategy, your acquisition spend goes to waste.
Complex Backend Integration
Connecting your app to payment gateways, third-party APIs, CRMs, and real-time databases introduces complexity that can derail timelines.
App Store Compliance
Apple and Google have strict review guidelines that change frequently. Rejections delay your launch and cost momentum at the worst possible time.
How We Solve This
Advenno combines platform expertise with user-centered design to build mobile apps that perform, engage, and scale.
Cross-Platform Efficiency
One codebase, two platforms. Reach iOS and Android users simultaneously without sacrificing quality or doubling costs.
Native Performance
Smooth 60 FPS animations, instant transitions, and optimized memory usage that feels indistinguishable from native.
User-Centric Design
Platform-specific UX patterns, intuitive gestures, and accessibility-first design that keeps users coming back.
Scalable Architecture
Cloud-native backends, efficient data sync, and modular codebases that grow with your user base from thousands to millions.
What's Included
From native builds and cross-platform delivery to MVP planning, backend systems, ASO, and retention-focused optimization.
Native iOS Development
Pixel-perfect iOS applications built with Swift and SwiftUI, optimized for the Apple ecosystem with deep platform integration.
- Swift and SwiftUI development
- Apple Watch and iPad companion apps
- HealthKit, ARKit, and Core ML integration
- App Store optimization and submission
Native Android Development
Production Android applications built with Kotlin and Jetpack Compose, supporting the full range of devices with Material Design 3.
- Kotlin and Jetpack Compose development
- Material Design 3 compliance
- Multi-device and foldable support
- Google Play Store optimization and launch
Cross-Platform Development
Single-codebase applications using Flutter or React Native that deliver near-native performance on both iOS and Android simultaneously.
- Flutter and React Native expertise
- Significant code sharing across platforms
- Platform-specific UI adaptations
- Hot reload for rapid iteration
Backend & API Development
Scalable server infrastructure, APIs, and real-time services that power your mobile app with reliable data and reliable integrations.
- RESTful and GraphQL API design
- Firebase and AWS cloud services
- Push notifications and real-time sync
- Payment gateway and third-party integrations
Product Strategy, MVPs & Prototypes
Validate the opportunity before full buildout with feature prioritization, clickable prototypes, and a roadmap matched to budget, launch goals, and delivery risk.
- Discovery workshops and product backlog definition
- MVP scoping for faster first releases
- Clickable prototypes for stakeholder review
- Existing app and codebase audit support
Launch Support, Analytics & Retention
Shipping is not the finish line. We instrument the app, optimize store presence, and use real usage data to guide the next round of retention and growth improvements.
- App Store and Google Play launch assets
- Product analytics, crash reporting, and release tracking
- Onboarding, lifecycle messaging, and push strategy
- Retention experiments and post-launch optimization plans
Our Proven Process
A refined mobile development workflow from initial concept to App Store launch and beyond. See how we build or review recent case studies.
Discovery & Strategy
We analyze your target audience, competitive landscape, and business objectives. You get a detailed app strategy document with feature prioritization, platform recommendation, and a clear project roadmap.
UX Research & Wireframing
We map out every user flow, define navigation patterns, and create interactive wireframes. Platform-specific conventions for iOS and Android are considered from the start.
UI Design & Prototyping
High-fidelity mockups and clickable prototypes let you experience the app before development begins. We iterate on visual design, micro-interactions, and animations until it feels right.
Agile Development
Two-week sprints with weekly builds and beta releases. Continuous integration, automated testing, and regular demos keep you in control of progress and priorities.
QA & Device Testing
Rigorous testing across real devices, OS versions, and network conditions. Performance profiling, security audits, and accessibility checks ensure a flawless launch.
Launch & Ongoing Optimization
We handle App Store and Google Play submission, ASO optimization, and post-launch monitoring. Crash reporting, user analytics, and iterative updates keep your app competitive.
Throughout every phase, you'll have direct access to your dedicated project manager and regular progress updates.
Our Work in Action
See how we've delivered measurable outcomes for businesses like yours.
Technologies We Use
We select the right tools for your specific platform, audience, and performance requirements.
Mobile Frameworks
Backend
Database & Storage
DevOps & Tools
Why Partner With Advenno
Dedicated Project Manager
One point of contact who understands your product vision, manages timelines, and keeps every stakeholder aligned from kickoff to launch.
Real-Device Testing
We test on physical devices across iOS and Android, covering edge cases that emulators miss. Your app works flawlessly in the real world.
App Store Expertise
We handle submission, compliance, and ASO for both Apple App Store and Google Play. Avoid rejections and maximize discoverability.
Post-Launch Support
Ongoing maintenance, OS compatibility updates, performance monitoring, and feature additions. We stay with you long after launch day.
Full Code Ownership
You own 100% of the source code, app store listings, and all associated assets. Clean architecture and documentation mean zero vendor lock-in.
Data-Driven Iteration
Built-in analytics, crash reporting, and A/B testing from day one. We use real user data to continuously improve retention and engagement.
How We Work With You
Every app is different. We offer flexible engagement models to match your scope, timeline, and budget.
Project-Based
Fixed scope, fixed timeline, fixed investment. Ideal for well-defined apps with clear feature requirements and a target launch date.
Ideal for: MVPs, v1 launches, and scoped feature builds.
- Detailed proposal and app roadmap
- Milestone-based payments
- Full source code and store handover
Dedicated Team
A dedicated mobile team working exclusively on your product, integrated into your workflow with full transparency.
Ideal for: Long-term products and ongoing feature development.
- Full-time dedicated developers
- Direct team communication
- Flexible scope and priority adjustments
Retainer / Ongoing
Monthly retainer for continuous app maintenance, OS updates, feature additions, and performance optimization. Scale up or down as needed.
Ideal for: Live apps needing regular updates and support.
- Priority support and response times
- Monthly strategy and analytics reviews
- Rollover unused hours
Custom pricing based on platform, complexity, and scope. We'll create a tailored proposal after understanding your requirements.
Common Questions About Mobile App Development
Should I build for iOS, Android, or both?
It depends on your target audience and business goals. In markets like the US and UK, iOS users tend to have higher spending power. Globally, Android holds over 70% market share. For most businesses, we recommend starting with cross-platform development using Flutter or React Native to reach both audiences simultaneously at a lower cost.
What is the difference between cross-platform and native development?
Native development uses platform-specific languages (Swift for iOS, Kotlin for Android) and delivers top-tier performance with full access to device APIs. Cross-platform frameworks like Flutter and React Native share a significant portion of code across platforms, reducing both cost and timeline. Advenno recommends native when your app requires heavy graphics, AR, or complex hardware integration, and cross-platform for most other use cases.
How long does it take to build a mobile app?
A focused MVP typically takes 8-12 weeks. A full-featured app with backend integration, authentication, payments, and admin dashboards generally takes 3-6 months. We provide a detailed timeline during discovery so you have clear expectations before any work begins.
Can you help validate an app idea before full development?
Yes. Advenno can run a discovery phase to define the problem, prioritize features, map user flows, and build a prototype or MVP roadmap before you commit to a larger build. That helps reduce launch risk and avoid overbuilding version one.
How much does mobile app development cost?
Cost depends on complexity, platform choice, and feature set. A simple single-platform app might start in the mid five figures, while a complex multi-platform product with custom backend can reach six figures. We provide transparent, fixed-price proposals after a thorough discovery phase so there are no surprises.
Can you improve or take over an existing mobile app?
Yes. We can audit an existing codebase, stabilize release processes, improve architecture, fix crash patterns, modernize the UI, and continue feature development without forcing a full rewrite unless the codebase truly requires it.
Do you handle App Store and Google Play submission?
Yes, we manage the entire submission process for both stores. This includes preparing screenshots, writing optimized descriptions, ensuring compliance with Apple and Google guidelines, and handling any review feedback or rejections. We also set up App Store Optimization (ASO) to improve your discoverability.
What kind of post-launch maintenance do you provide?
Our maintenance packages include OS compatibility updates when Apple and Google release new versions, bug fixes, performance monitoring, crash reporting via Sentry or Crashlytics, security patches, and feature additions. We typically release updates every 4-6 weeks to keep your app stable and competitive.
How do you improve app retention after launch?
We use onboarding reviews, lifecycle messaging, analytics, crash data, App Store feedback, and feature-usage trends to identify where users drop off. From there, we prioritize experiments and updates that improve retention without bloating the product.
Can the app work offline?
Yes. We architect apps with offline-first capabilities using local databases like Realm or SQLite, with intelligent sync mechanisms that reconcile data when connectivity is restored. This is especially important for apps used in areas with unreliable network coverage or for features that need to work without an internet connection.
Ready to Build a Mobile App With Advenno?
Share your app idea and our team will get back to you with an initial strategy and development roadmap.
No commitment required. Free initial consultation.