Manage your personal cloud storage and grant scoped access to apps.
Your data stays in YOUR cloud.
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The Problem
For End-Users
Today you have two choices for storing your data. You can use services like Google Drive, iCloud, or Dropbox -- but then your files get scanned, analyzed, and you have no idea where they actually end up. Or you can host your own server with something like Nextcloud -- but that requires technical skills most people don't have.
There's no good option for someone who just wants to control their own data without becoming a system administrator.
For Developers
If you want to build a privacy-respecting app, you need to run servers, manage databases, handle backups, and deal with security. On top of that, you're responsible for GDPR compliance -- which means legal requirements, documentation, and potential liability.
For a small team or indie developer, this is often too much. Many good app ideas never get built because the infrastructure burden is just too heavy.
The Solution
You Choose Your Cloud
Instead of using Big Tech services or running your own server, you pick a European cloud provider like Scaleway, Exoscale, or Hetzner. You create an account directly with them.
Your data lives in your own cloud account -- not in some app developer's database. You decide where it's stored and you can switch providers whenever you want.
Apps Get Scoped Access
When you install an app that works with Proprion, it doesn't get access to all your files. It only gets access to its own folder .
A notes app can only see /apps/notes/. A photo app can only see /apps/photos/. They can't read each other's data -- this is enforced by the cloud provider's security system, not by trusting the apps.
No Developer Servers
Apps connect directly to your cloud storage . The developer never sees your data, never stores it on their servers, and can't access it even if they wanted to.
This also means developers don't have to run servers or worry about storing your personal data. They just build the app, and your data stays yours.
How It Works
1. Install Proprion App
Download Proprion Admin App .
The app guides you through creating a cloud account with step-by-step instructions for each provider.
Download (coming soon)
2. Add Apps (30 sec each)
Install a Proprion-compatible app.
Admin App generates scoped credentials for that app.
App can only access its own folder.
3. Stay in Control
See all apps with access.
Revoke access instantly.
Monitor storage per app.
For Developers
Simple Integration
User gives you scoped S3 credentials.
Use any S3 client -- no special library needed.
Optional: Use Proprion library for encryption or non-S3 providers.
What You Skip
No backend servers.
No databases.
No backup infrastructure.
No GDPR liability for user content.
You don't control user data = you're not the data controller.
What You Can Build
Medical record apps.
Mental health journals.
Biometric tools.
Therapy systems.
Apps that were impossible become possible.
Status
Prototype Ready
CLI prototype working with Scaleway and Exoscale.
Creates scoped IAM credentials per app.
Isolation verified -- apps can't access each other's data.
github.com/proprion/proprion-desktop