PlatformiOS, Mac (Mac version in review)AvailabilityAvailable in all App Store regions.
Guyun
In review
A file manager for object storage you already own. The app is free, and access keys stay on your device.
Put your files straight into object storage you already own — your bucket, your keys, your bill.

Guyun is a file manager for object storage you already own: Alibaba Cloud OSS, or any S3-compatible service. There is no account to create, no server of ours in the middle and no telemetry — files go straight from your Mac, iPhone and iPad to your own bucket, and your access keys stay in the device's Keychain: never uploaded, never synced, never exported.
It covers the whole job: grid and list, whole-storage search, video that plays while it is still loading, a transfer queue that resumes, a trash you can restore from, and per-storage icons, ordering and locks.
The app itself is free; storage and outbound traffic are billed by your provider at their published rates — we provide no cloud space and take no cut of your storage. You can even try it with no storage at all: the built-in demo storage generates its sample files on the device, with no account, no keys and no network. It is not a sync or auto-backup tool: nothing starts on its own, and every transfer is one you began and can watch finish.
Details
- Grid and list
- Whole-storage search
- Video that plays while it is still loading
- A transfer queue that resumes
- A trash you can restore from
- Per-storage icons, ordering and locks
- Built-in demo storage — try it with no account, keys or network
- Free app; storage and traffic billed by your provider, with no cloud space sold and no cut taken
- Not a sync or auto-backup tool: nothing starts on its own, and every transfer is one you began
Screenshots
Interface previews, switchable by device. Scroll sideways, and click any preview to enlarge it.
8 previews per set.
How to get it
Shown for reference only — there is no public entry.