$ one client, every S3 provider
A free, open-source S3 client for iPhone, iPad & Mac
Browse buckets, upload with progress, share presigned links and manage files across AWS S3, Cloudflare R2, Hetzner and 12 more S3-compatible providers. Your credentials never leave your device.
Free · MIT licensed · No account · No tracking
providers
Works with 15 providers
Every preset builds the right endpoint for you — pick a provider, paste your keys, done. Each one has its own setup guide:
features
Everything a bucket needs, nothing it doesn't
A focused tool: it browses, moves and previews your objects. No dashboards, no upsells.
Browse buckets & folders
Navigate any bucket with breadcrumbs, list or grid view, and inline image thumbnails.
Uploads with real progress
Multipart uploads from your photo library or files, with a real progress bar — not a spinner.
Share presigned URLs
Generate time-limited links to private objects and send them from the native share sheet.
Bulk operations
Multi-select to copy, rename or delete files — including recursive folder operations.
Built-in viewers & editors
Open JSON, YAML, CSV and text/code files in place — edit and save them back to the bucket.
Connection tests & offline mode
Verify credentials before saving, and get a clear offline banner instead of silent failures.
privacy
Open source, no strings
Your access keys are stored in the device Keychain — encrypted by iOS itself. There is no backend: the app signs requests on your device and talks directly to your storage provider.
The entire app is MIT-licensed. Read the code, open an issue, or build it yourself from the GitHub repo.
# what this app does NOT do
- - no telemetry, no analytics
- - no account, no signup
- - no ads
- - no in-app purchases
- - no backend — your device talks straight to your provider
platforms
One download, four platforms
iPhone
iOS 15.1+
iPad
iPadOS 15.1+
Mac
Apple Silicon, macOS 12+
Apple Vision
visionOS 1.0+
faq
Questions, answered
+ Is Universal S3 Client really free?
Yes — completely. No subscription, no in-app purchases, no ads, no feature paywall. The full source code is MIT-licensed on GitHub.
+ Which storage providers does it work with?
Fifteen presets: AWS S3, Cloudflare R2, Hetzner, DigitalOcean Spaces, Wasabi, Backblaze B2, Scaleway, Vultr, Linode, Oracle Cloud, IBM Cloud, Google Cloud Storage, Azure Blob, MinIO and IDrive e2 — anything that speaks the S3 API.
+ Where are my access keys stored?
In your device Keychain, encrypted on-device. The app has no server, so your credentials never leave the device except to sign requests to your own provider.
+ Does it run on the Mac?
Yes — the App Store version installs on Apple Silicon Macs (macOS 12 or later), alongside iPhone, iPad and Apple Vision Pro.
Your buckets, in your pocket
15 providers, one free app. Install it, paste your keys, and stop opening web consoles for every little file.