Allusion vs refern: Watched Folders or Library and Canvas?

Keep Allusion if its free watched-folder library and hierarchical tags cover your reference workflow. Try refern if you also need a canvas, relationship graph, or a supported migration into a broader local workspace.

What Allusion already does

Allusion’s official site describes selecting watched folders, browsing their images, and filtering with hierarchical tags and combined search. It was designed to complement a separate reference board. That remains a coherent workflow: the library retrieves an image, and your preferred board tool holds the project. There is no reason to replace a working setup simply because it uses two applications. Source

Treat release history as evidence, not a verdict

The reviewed official release feed lists 1.0.0-rc.10 from February 2023. Individual issue reports describe thumbnail memory use and missing results in particular libraries. Neither an old release date nor one report proves that every installation fails, every fork shares the issue, or the project is formally discontinued. Test the actual build you plan to use. Source

The source files and tags need separate attention

Allusion can read and export file metadata; its export confirmation warns that existing keywords can be overwritten. A watched-folder setup is therefore not universally read-only. Preserve originals and the application database before a migration. refern has an Allusion import route, but check the supported fields and resulting media before retiring the old catalog. Source

Try one project before migrating

refern combines local folder indexing, a searchable reference library, an infinite canvas, and a relationship graph. Normal indexing leaves source media in place and creates application data; explicit imports and file actions can create or modify files. It runs on Windows, macOS, and Linux, but window transparency and clickthrough controls are not available on Linux.

Tagging is keyboard-first: any tag can have its own key, Ctrl/Cmd+Alt+C and Ctrl/Cmd+Alt+V copy and paste tags between items as comma-separated names, and tag search matches any part of a name.

Use a copied sample that includes your usual file types and metadata. Check previews, search, canvas placement, and a saved-and-reopened project. Keep original catalogs and backups until the result is verified. A successful thumbnail scan is not proof that every source field, relationship, or edit transferred.

The price is $35 one-time after a 30-day trial, with up to three devices under current terms. After the trial, activation gates the interface while the normal files and data remain on disk. See current pricing.

Does Allusion have a fixed large-library limit?

The reviewed issues describe individual failures, not a universal image-count or database-size ceiling. Compare a representative library and the current build; this page publishes no cross-product speed or capacity benchmark.