RocketBucket
S3 & R2 transfers, FTP-style
Only for Mac
Free · In‑App Purchases
Mac
The feel of FTP, the world of S3.
RocketBucket is a dual-pane file transfer app for Amazon S3, Cloudflare R2, Backblaze B2, MinIO — anything that speaks the S3 API. The left pane is your Mac, the right pane is your bucket. Drag across to move files between them. The habits you built thirty years ago with FTP clients still work here, unchanged.
FEATURES
• Dual-pane drag and drop — source on the left, destination on the right. Files, folders, whole directory trees. The interface is the manual.
• Works with any S3-compatible endpoint — Amazon S3, Cloudflare R2, Backblaze B2, MinIO. Every endpoint is bidirectional: local↔cloud and cloud↔cloud.
• Runs in the Apple sandbox with least privilege. It only touches the folders you hand it.
• Keys stored in the macOS Keychain — never written to a config file on disk. Sign in with IAM Identity Center (AWS SSO) or paste an access key.
• Multi-threaded parallel transfers — large files upload as parallel multipart; thousands of small files spread across connections. Interrupted large uploads can be resumed.
• No SDK, no bloat. S3 requests use a hand-written SigV4 signer. Nothing is reported anywhere.
Left pane: your Mac. Right pane: your bucket. Drag across — that's the whole manual.
PRICING
RocketBucket is free to download. Browsing, connections, endpoints and delete are free. Transfer is free for 7 days, then requires RocketBucket Pro:
• Pro Monthly — USD 2.99 / month, auto-renewing
• Pro Yearly — USD 29.99 / year, auto-renewing
• Pro Lifetime — USD 39.99 one-time purchase
If you bought RocketBucket before it became free, you already own everything — no subscription, nothing to buy.
Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account. Manage or cancel in App Store account settings. Prices may vary by region.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://rocketbucket.app/privacy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
RocketBucket is now free to download, with a 7-day free trial of Transfer.
• Free: browse buckets, manage connections and endpoints, delete objects.
• RocketBucket Pro unlocks Transfer — monthly, yearly, or a one-time lifetime purchase.
• Bought RocketBucket before this update? You keep everything, forever — no subscription, nothing to buy.
• Restore Purchases and plan details are under the gear menu.
The developer, Jiayan Lin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jiayan Lin
- Size
- 1.3 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Lifetime $39.99
- Pro Yearly $29.99
- Pro Monthly $2.99
- Copyright
- © 2026 RocketBucket