macOS · M1 and later
Apple Silicon
The one to take if About This Mac says M1, M2, M3 or M4.
Download .dmgCoii-Ref_aarch64.dmg
Download
Pick your Mac.
Every feature is unlocked for 30 days — no card, no account, nothing to sign up for. After that, adding more to the library is the only thing that asks for a licence.
Latest build
macOS · x86_64
Intel
For Macs made before Apple Silicon. Same app, same features.
Download .dmgCoii-Ref_x86_64.dmg
Not sure which one? Apple menu → About This Mac. “Apple M1” or later means Apple Silicon; anything that says Intel means the other one. A browser cannot tell the two apart — every Mac reports itself as Intel — which is why this page asks instead of guessing.
What the first run does
It downloads nothing
No models, no runtime, no second installer. What is in the disk image is the whole app, so the first launch works on a machine with the network off — the only call it can make during the trial is the clock check.
It asks which folder
Choosing a workspace is the first thing you do, and macOS will ask its own permission question the first time the app reaches into Desktop, Documents or an external volume. Indexing runs in the background, reports progress, and can be cancelled and resumed.
It writes beside your files
One SQLite file plus coii-thumbnails/, coii-proxies/ and coii-backups/, all inside the folder you chose. Delete that folder and the app is gone from it; move it and the workspace goes with it.
Requirements
- macOS 11 Big Sur or later — Apple Silicon or Intel. There is no Windows or Linux build, and not as a stage on the way to one.
- Disk for the thumbnails and canvas-resolution proxies, roughly in proportion to how many files you index — they live in the workspace folder, so it is visible rather than hidden away in a Library directory.
- The disk images are signed and notarised by Riff Tech, Inc., so the first open is an ordinary one — no right-click → Open, no Gatekeeper detour.
$19 USD when the 30 days are up.
One payment, 3 devices, every future version included. Everything you indexed during the trial stays searchable, and every canvas stays editable, either way.