Mobile applications need a backend. Even a simple mobile app may need to store users, profiles, settings, messages, images or application data. Supabase provides many of these backend services in one stack. But you do not necessarily have to keep your backend on a hosted SaaS platform. You can also run the open-source Supabase stack on your own infrastructure.
Why Use Supabase for a Mobile App?
Supabase provides several backend services that mobile applications commonly need: PostgreSQL database Authentication REST APIs Storage Realtime Row Level Security Instead of creating each backend component separately, your mobile application can connect to Supabase as its backend.
The Basic Architecture
A typical setup looks like this: Android / iOS App | v Self-Hosted Supabase | +----+----+ | | PostgreSQL Storage | Auth / APIs
Your mobile application communicates with the Supabase APIs rather than directly connecting to PostgreSQL.
Configure the Supabase URL
The first important value is your Supabase project URL. Your mobile application needs to know where the backend is located. For example: https://supabase.example.com The exact URL depends on your production deployment.
Add Your Public Client Key
Supabase client libraries also use a public client key. The application can use the public/anon key together with your Supabase URL. However, private service-role credentials should never be embedded inside a mobile application. Anything included inside a mobile app should be considered potentially accessible to the app user.
Authentication
A mobile application can use Supabase Auth for user accounts. Common flows include:
1.User opens the application. 2.User creates an account. 3.Supabase authenticates the user. 4.The application receives the session. 5.The user accesses protected data.
You can then use Row Level Security to control what each user can access.
Example Data Model
Imagine a mobile fitness application. You could have: profiles workouts exercises progress Each record can be associated with a user. For example: user_id
can identify which account owns the record. Then database policies can restrict users to their own information.
Storage for Mobile Apps
Mobile applications often need file uploads. Examples include: Profile pictures Documents Product images Workout videos Chat attachments
Supabase Storage can handle these files. When self-hosting the full stack, Storage is part of the deployment rather than requiring a separate backend service. Hostwares describes its self-hosted Supabase setup as including Storage alongside Postgres, Auth, Realtime and Studio.
Realtime Features
Realtime can be useful for mobile applications that need live updates. For example: Chat Notifications Delivery tracking Collaboration Live dashboards Instead of repeatedly requesting new data, the application can subscribe to relevant changes.
Security Still Matters
Self-hosting does not remove the need for application security. You should still configure: Row Level Security Authentication rules Storage policies API access Secure credentials HTTPS Never put a service-role key inside the mobile application.
Hosting the Backend
The mobile application itself can be distributed through app stores while the Supabase backend runs on your server. This creates a simple architecture: Google Play / App Store | v Mobile App | v Supabase Backend | v PostgreSQL
Hostwares can deploy the complete open-source Supabase stack on dedicated infrastructure with custom domains and SSL.
Final Thoughts
A mobile application does not need a complicated backend architecture to get started. Supabase can provide database, authentication, storage and realtime features in one backend. Running the open-source stack on your own infrastructure gives you another deployment option when you want more control over the environment. Explore self-hosted Supabase on Hostwares