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helumi
Own this tool?Adds storage space to a Mac without moving files out of Finder, because only the parts an app requests are downloaded.
helumi is a macOS app that mounts a cloud drive in Finder, keeping large files off the Mac while fetching only the parts an application needs.
- Mac users whose disks fill up with large video, audio, or photo files
- Video editors and producers working with footage too large for the internal drive
- Users who want files to stay in Finder rather than in a separate web app
Features
- A drive in Finder — The helumi drive sits next to Macintosh HD, and Final Cut Pro, Premiere Pro, Photoshop, QuickTime, and Preview see it as a normal drive.
- On-demand fetching — Only the parts of a file an app needs are retrieved; the site states a start time of about 0.8 seconds for a large video.
- Up to 30 TB of space — The site lists 30 TB as the amount available if needed.
- Sending and receiving with links — Any file can be shared with a link, and files can be received from other people through a link.
- Offline folders — Right-clicking a folder keeps it on the Mac for work without a connection.
- Recoverable deletes — Files stay for 30 days after deletion, and edits on two Macs do not overwrite each other.
Pros
- Files live in the cloud and take no space on the Mac while still appearing as a normal drive in Finder.
- Only the parts of a file that an application needs are downloaded, and the site states that a large video starts playing in about 0.8 seconds.
- Works with Final Cut Pro, Premiere Pro, Photoshop, QuickTime, and Preview with nothing extra to install.
- Files are encrypted and stored with Cloudflare, deleted files are recoverable for 30 days, and edits on two Macs do not overwrite each other.
- If a subscription lapses, the site states that files are never deleted; only new uploads stop.
Cons
- Requires a Mac running macOS 26 Tahoe or newer.
- Most files need an internet connection, and offline work requires folders to be marked as kept on the Mac.
- One plan of 1 TB is shown on the site, with no smaller or larger tier in the pricing section.
- Files added while offline wait on the Mac and upload once the connection returns.
Overview
helumi is a macOS app that adds a new drive to Finder with cloud storage behind it. Files are dragged onto the helumi folder or the menu bar icon, where they look and open like ordinary files, but they are stored in the cloud and take no space on the Mac. A large video, for example, occupies nothing locally, and only the parts an application reads are retrieved on demand.
Key features
- A drive in Finder that sits next to Macintosh HD, seen as a normal drive by Final Cut Pro, Premiere Pro, Photoshop, QuickTime, and Preview
- On-demand fetching of only the parts of a file an app needs, with the site stating a start time of about 0.8 seconds for a large video
- 30 TB of available space, as listed on the site
- Sharing any file with a link, and receiving files from other people through a link
- Folders kept on the Mac for offline work, chosen by right-clicking
- Deleted files recoverable for 30 days
- Uploads that resume after a Wi-Fi drop, and editing on two Macs without overwriting each other
Who it is for
helumi is aimed at Mac users whose storage fills up with large files, particularly in video, audio, and photo work: editors, producers, and photographers who need files close at hand without keeping every minute of footage on the machine. It suits users who want to keep working in Finder and their existing applications rather than switching to a separate web app for storage.
Pricing
The site lists one plan of 1 TB, paid monthly and cancellable at any time, priced at $10 per month with a promotional first month at $8. The plan covers files that take no space on the Mac, opening instantly in any app, sending and receiving files with a link, and 30 days to undo a delete. The app is free to download but requires macOS 26 Tahoe or newer.
Frequently asked questions
How can a file open instantly if it is not on my Mac?
The site states that helumi fetches only the part of a file an application needs, when it needs it, so a video starts as soon as its first seconds arrive and skipping ahead retrieves just that section.
How does it differ from iCloud Drive or Dropbox?
The site states that iCloud and Dropbox download a whole file before it can be opened and then keep it on the Mac, while helumi keeps nothing on the Mac and fetches on demand.
What happens if I stop paying?
The site states that files are never deleted; new files simply cannot be added until a plan is chosen again.
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