Design & build
Native iOS & Android Development
When an app needs the best possible performance or deep access to device features, we build it natively for each platform, following Apple and Google guidelines.
Design & build
Your Mobile App Development Company
As a mobile app development company, CouSync builds iOS and Android apps that are fast, secure and easy to use. We handle the app, the backend behind it and the release to the App Store and Google Play.
What we deliver
What you get from our mobile app development company
Our own products run on phones: PIA VPN Master on Android and iOS, and Ransync with mobile access for employees and managers. Building and maintaining apps that real users install taught us what matters on mobile: speed, battery, offline behaviour and a smooth store release.
Whether you need a customer-facing app, a companion to an existing web platform or a tool for staff in the field, we plan the app around the moments people reach for their phone. We design for small screens and patchy connections, keep sign-in and onboarding short, and build the backend so the app stays fast as your user base grows. We also help you prepare for store review, privacy declarations and the release schedule that keeps users on the latest version.
Cross-Platform Development
When speed to market and one shared codebase matter more, we build a single cross-platform app for iOS and Android. We explain the trade-offs so you can choose with confidence.
API Integration & Backend Development
Most apps need accounts, data sync, notifications and payments. Our backend engineers build the APIs and services your app depends on, or connect it to the systems you already run.
App Store & Play Store Deployment
We prepare builds, store listings and the review submissions for the App Store and Google Play, and handle the questions reviewers raise along the way.
Performance Optimization & Security
We keep apps quick to start and light on battery and data, store sensitive data securely, and protect traffic between the app and your servers.
Ongoing Maintenance & Support
New OS versions and devices arrive every year. We keep your app compatible, fix issues reported by users and ship updates on a regular schedule.
Process
How we work
-
Plan
We define the users, the core features for version one and the platforms to launch on.
-
Design
Mobile-first flows and screens are designed and prototyped for both platforms.
-
Build
We develop the app and its backend in iterations, with test builds you can install on your own phone.
-
Test & release
We test on real devices, then prepare and submit the store releases.
-
Maintain
After launch we monitor crashes and feedback and ship updates.
Tools & capabilities
What we work with
- Native iOS
- Native Android
- Cross-platform frameworks
- Node.js, NestJS and Django backends
- Push notifications
- App Store and Google Play release
We recommend native or cross-platform per project, based on the features, budget and timeline.
Why CouSync
Why choose CouSync
We ship our own apps
PIA VPN Master is a CouSync product on Android and iOS, so we deal with store reviews, updates and user feedback first-hand.
App and backend from one team
The same team builds the mobile app and the server it talks to, which removes a common source of delays and bugs.
Security-minded engineering
PIA VPN Master, one of our products, is built around encryption and leak protection.
Support after release
We keep apps working through new OS versions and devices, and help you plan new features based on real usage.
FAQ
Frequently asked questions
Do you build for both iOS and Android?
Yes. We build native apps for each platform or a single cross-platform app, depending on what suits your product and budget.
Should I choose native or cross-platform development?
Native gives the best performance and full device access; cross-platform gets you to both stores faster with one codebase. We recommend one after understanding your features and plans.
Can you build the backend for my app as well?
Yes. We design and build the APIs, databases and admin tools behind the app, or integrate with the systems you already have.
Do you publish the app to the App Store and Google Play?
Yes. We prepare the builds and store listings and manage the submission and review process. We agree with you which developer accounts the app is published under.
How much does it cost to develop a mobile app?
Cost depends on the features, platforms and integrations. After a first call we give you a scoped estimate for version one.
What happens after the app is launched?
We offer maintenance and support: bug fixes, OS compatibility updates, performance monitoring and new features.
Other services
Explore more services
UX/UI Design
Creative and user-friendly designs that captivate your audience and drive conversions through strategic user experience optimization.
Learn more
Web Application Development
Custom and user-centric web applications that drive growth through innovation, functionality, and seamless digital experiences.
Learn more
Desktop Application Development
Powerful and user-focused desktop applications tailored to enhance productivity, ensure seamless integration, and deliver peak performance.
Learn moreNeed help with Mobile Application Development?
Tell us what you are building. We will reply with questions, ideas and a clear next step.