# CarrySo

> CarrySo is a mobile app development company specialising in Flutter and cross-platform mobile applications. We build custom mobile apps, SaaS mobile apps and MVPs for clients for Android and iOS, and we develop and publish our own apps on Google Play.

We are a mobile app development company specialising in Flutter and cross-platform mobile applications. We build custom mobile apps, SaaS applications and MVPs for clients, while also developing and operating our own software products.

Key facts:
- Type of company: mobile app development company
- Track record: 150+ projects delivered for clients (owner-stated); 6 own apps published on Google Play
- Primary service: mobile app development, implemented mainly with Flutter
- Specialisms: Flutter, Android, iOS, cross-platform, SaaS mobile apps, MVPs, mobile UI/UX, backend/API (Firebase), app store deployment, maintenance
- Platforms: Android apps published on Google Play; iOS from the same Flutter code base
- Builds for: founders (MVPs), SaaS businesses, companies needing custom apps, owners of existing Flutter apps
- Technologies: Flutter, Dart, Firebase (Cloud Firestore, Cloud Functions, Cloud Messaging, Crashlytics), GetX, Riverpod, Bloc, Isar, FFmpeg
- Google Play developer page: https://play.google.com/store/apps/developer?id=CarrySo
- Contact: carrysoofficial@gmail.com or https://carryso.com/contact
- Pricing: quoted per project from scope; no fixed public prices

## Services (what CarrySo builds for clients)
- [Mobile app development](https://carryso.com/services/mobile-app-development): Mobile app development from idea to app store: Flutter apps for Android and iOS, SaaS mobile apps, MVPs, UI/UX, backend APIs, store deployment and maintenance. (pillar page)
- [Flutter app development](https://carryso.com/services/flutter-app-development): Flutter app development for Android and cross-platform apps: architecture, state management, Firebase, on-device processing, testing and store release.
- [Android app development](https://carryso.com/services/android-app-development): Android app development with Flutter: apps built for real devices, published and maintained on Google Play, with Data safety, privacy policies and updates.
- [MVP app development](https://carryso.com/services/mvp-app-development): Launch a focused mobile MVP with Flutter: tight scope, real users on the app store, crash reporting and remote config, so you learn fast and iterate.
- [Mobile app maintenance and updates](https://carryso.com/services/app-maintenance-and-updates): Mobile app maintenance for Flutter apps: crash monitoring, SDK and target API updates, Google Play policy compliance, update prompts and regular releases.
- [iOS app development](https://carryso.com/services/ios-app-development): iOS app development with Flutter: iPhone and iPad apps from one code base, Apple Developer setup, TestFlight, App Store review, privacy labels and updates.
- [Cross-platform app development](https://carryso.com/services/cross-platform-app-development): Cross-platform mobile app development with Flutter: one code base for Android and iOS, native performance, shared tests, and lower build and maintenance cost.
- [SaaS mobile app development](https://carryso.com/services/saas-mobile-app-development): Mobile apps for SaaS businesses and mobile-first SaaS products in Flutter: subscriptions, auth, onboarding, dashboards, payments, push, APIs and admin panels.
- [Mobile app UI/UX design](https://carryso.com/services/mobile-app-ui-ux-design): Mobile app UI/UX design that ships: user flows, wireframes, screens and a Flutter design system for Android and iOS, with onboarding, dark mode and accessibility.
- [Mobile app backend and API development](https://carryso.com/services/mobile-app-backend-api-development): Backend and API development for mobile apps: Firebase (Auth, Firestore, Cloud Functions, FCM), REST API integration, security rules, admin panels and remote config.
- [App store deployment](https://carryso.com/services/app-store-deployment): App deployment to Google Play and the App Store: listings, screenshots, privacy policy, Data safety and privacy labels, signing, review, staged rollout and updates.
- [AI app development](https://carryso.com/services/ai-app-development): AI app development for mobile: on-device models for photo, video and text tasks, plus LLM-powered features through APIs, built into Flutter apps with Firebase.
- [App rescue and existing app development](https://carryso.com/services/app-rescue-and-existing-app-development): App rescue for Flutter apps: audit, stabilise and take over an existing mobile app, fix crashes and store issues, then add features on a sustainable footing.

## Products (software CarrySo owns, develops and publishes; not client work)
- [Photo Compressor & Resizer](https://carryso.com/products/photo-compressor-resizer): Compress photos to an exact size in KB, resize in batch and convert formats, all on the device. (Photo utility, Android, 1,000+ installs on Google Play)
- [BG Remover AI](https://carryso.com/products/bg-remover-ai): Offline AI background removal with manual erase and restore tools and marketplace-ready exports. (Photo editor, Android, 100+ installs on Google Play)
- [GIF Maker](https://carryso.com/products/gif-maker): Turn videos and photos into GIFs, edit frame by frame, and export GIF, MP4 or WebP without a watermark. (Video editor, Android, 500+ installs on Google Play)
- [HEIC Converter Pro](https://carryso.com/products/heic-converter-pro): Batch convert iPhone HEIC photos to JPG, PNG, PDF or WebP offline, keeping EXIF data and dates. (File converter, Android)
- [MetaClean](https://carryso.com/products/metaclean): Find and remove hidden GPS, device and software metadata from photos and videos before you share them. (Privacy tool, Android)
- [CropFlow](https://carryso.com/products/cropflow): A small, fast photo cropper with social media presets, rotation, straightening and full-resolution export. (Photo utility, Android, 100+ installs on Google Play)

## Case studies (how each CarrySo product was designed and built)
- [Photo Compressor & Resizer](https://carryso.com/work/photo-compressor-resizer): How CarrySo built an offline Flutter app that compresses photos to a target size in KB, resizes in batch and converts formats on Android. (Photography, 1,000+ installs on Google Play)
- [BG Remover AI](https://carryso.com/work/bg-remover-ai): How CarrySo built an Android app that removes photo backgrounds with on-device AI, plus manual erase and restore tools, using Flutter. (Photography, 100+ installs on Google Play)
- [GIF Maker](https://carryso.com/work/gif-maker): How CarrySo built a Flutter app that turns videos and photos into GIFs, edits them frame by frame and exports GIF, MP4 or WebP on Android. (Video Players & Editors, 500+ installs on Google Play)
- [HEIC Converter Pro](https://carryso.com/work/heic-converter-pro): How CarrySo built an offline Flutter app that batch converts iPhone HEIC photos to JPG, PNG, PDF or WebP on Android while keeping EXIF data. (Tools)
- [MetaClean](https://carryso.com/work/metaclean): How CarrySo built MetaClean, a Flutter app that finds and strips GPS and device metadata from photos and videos on Android, on the device. (Photography)
- [CropFlow](https://carryso.com/work/cropflow): How CarrySo built CropFlow, a small, fast Flutter app for cropping, rotating and straightening photos with social media aspect-ratio presets. (Photography, 100+ installs on Google Play)

## Blog (guides on mobile app development, Flutter, SaaS and MVPs)
- [Flutter vs Native: Which Should You Choose in 2026?](https://carryso.com/blog/flutter-vs-native): Flutter or native Kotlin and Swift? A practical comparison of cost, performance, UI, platform access and maintenance, with the cases where each wins.
- [How Much Does It Cost to Build a Mobile App?](https://carryso.com/blog/how-much-does-a-mobile-app-cost): What drives the cost of a mobile app: scope, backend, integrations, design, platforms and maintenance. How to estimate your app and what an honest quote includes.
- [How Long Does It Take to Build an MVP App?](https://carryso.com/blog/how-long-does-it-take-to-build-an-mvp): A realistic MVP timeline for a mobile app: what fits in weeks, what pushes it to months, and how to scope a Flutter MVP that ships to real users fast.
- [How to Build a SaaS Mobile App: A Practical Guide](https://carryso.com/blog/how-to-build-a-saas-mobile-app): A step-by-step guide to building a SaaS mobile app: architecture, auth, onboarding, subscriptions, backend, push notifications, admin panel, store rules and launch.
- [Flutter SaaS App Architecture: Layers, State and Data](https://carryso.com/blog/flutter-saas-app-architecture): A reference architecture for Flutter SaaS apps: feature-first folders, a repository layer, state management, auth and entitlements, offline caching and testing.
- [Mobile App Subscription Architecture Explained](https://carryso.com/blog/mobile-app-subscription-architecture): How to architect in-app subscriptions for Android and iOS: store billing, server-side receipt validation, entitlements, restore purchases, trials and edge cases.
- [How to Launch a Mobile App on Google Play and the App Store](https://carryso.com/blog/how-to-launch-a-mobile-app): A launch checklist for mobile apps: developer accounts, signing, store listings, privacy policy, Data safety and privacy labels, test tracks, review and rollout.
- [Mobile App Maintenance Guide: What to Do After Launch](https://carryso.com/blog/mobile-app-maintenance-guide): What mobile app maintenance involves: crash monitoring, SDK and target API updates, store policy deadlines, privacy forms, update prompts and a release cadence.
- [Mobile App Security Basics for Product Teams](https://carryso.com/blog/mobile-app-security-basics): Practical mobile app security for product teams: secure storage, auth tokens, server-side validation, security rules, privacy by design, permissions and SDK hygiene.

## Company
- [About](https://carryso.com/about): who CarrySo is and how we work
- [Pricing](https://carryso.com/pricing): what decides the cost of an app and how estimates work
- [Contact](https://carryso.com/contact): start a project

## Optional
- [Products index](https://carryso.com/products)
- [Work index](https://carryso.com/work): portfolio and case studies
- [Sitemap](https://carryso.com/sitemap.xml)