We develop
your mobile and web app!
The Coastline Company is a collective of freelance experts in mobile and web app development.
From product design and project management to development and strategic guidance — we have everything you need to build and grow your business.
Our Expertise
Flutterflow
Firebase
Supabase
Make
Stripe
Buildship
Our Team
Marc
Guillaume
Rénald
Julien
Hugo
Sacha
Lika
Thibault
Our Services
Ready-to-Launch MVP
1 month
✅ 1 week of custom mobile UX/UI design
✅ 3 key user flows (defined together)
✅ iOS & Android development via FlutterFlow
✅ Backend with Firebase or Supabase
✅ App Store & Play Store publishing included
✅ 2 weeks of post-launch support
💰 €6,000 excl. VAT – Payable in 2 installments
Scalable Custom App
3 months
✅ 2 weeks of tailored UI/UX design
✅ 1 week of architecture & database setup
✅ Fully custom user flows, defined with your team
✅ Advanced features: push notifications, analytics, social login, etc.
✅ App Store & Play Store publishing
✅ 1 week of user testing
✅ 2 weeks of post-launch support
💰 €16,000 excl. VAT – Payable in 3 installments
Enterprise Solution
6 months
✅ Mobile app (iOS & Android) for your users
✅ Web back-office app for internal teams or clients
✅ Advanced user management (roles, permissions, security)
✅ Bilingual app (English/French)
✅ API integrations with internal tools (ERP, CRM, etc.)
✅ App Store & Play Store publishing
✅ 2 weeks of user testing
✅ 2 weeks of post-launch support
💰 €30,000 excl. VAT – Payable in 3 to 4 installments
Trusted by
LEET
Leet is the app to easily book premium lifestyle services at home.
In just a few taps, access vetted professionals — from personal trainers and chefs to photographers — and customize your bookings by need, time, and location.
Features : Reservations, Service Offerings, Chat
Secteur : Lifestyle, Services
Warzonetryhard
Warzonetryhard is a web and mobile app designed to help players optimize their gameplay in Warzone.
Access expert-recommended loadouts from Nanou_FPS, build your own custom meta classes, and level up with official guides and coaching to improve your skills efficiently.
Features : Rankings, Online Courses, News
Secteur : Game, Entertainment
PokerPro
Texas Poker Pro delivers the ultimate poker experience with daily tournaments, tables for all skill levels, a built-in odds calculator, and advanced stats tracking.
Social features, a virtual shop, and personalized challenges enhance gameplay, with daily rewards and fun mini-games to keep the action going.
Features : Social Experiences, Advanced Statistics, Daily Tournaments
Secteur : Game, Entertainment
Kontnu
Warzonetryhard is a web and mobile app designed to help players optimize their gameplay in Warzone.
Access expert-recommended loadouts from Nanou_FPS, build your own custom meta classes, and level up with official guides and coaching to improve your skills efficiently.
Features : Service Exchanges, Social Visibility, Connection
Secteur : Life Style, Entertainment
A mobile app + dashboard
the perfect combo for businesses needing real-time information sharing between back office and field employees.
Employees get instant access to updates, while the back office can manage everything from one place — including document uploads/downloads, planning, and more.
Secteur : Internal tool
Ready to build your app?
Book a call with our team!