Only good for small catalogs
The developer reached out to me and offered to help trouble shoot the app, and he also updated it independently to address what he thought might be the issue. It works much better and the issue seems to have resolved—I can now open catalogs with thousands of items with no trouble.
Old review:
I find that working with catalogs with more than a 5 or 6 dozen images bogs the software down, and that it somehow loses the thumbnails with greater frequency the larger the catalog gets—it ends up necessitating rebuilding the thumbnails only to lose them over and over. I tried making the thumbnails as small as possible and it doesn't help. It ends up being useful for organizing images in a small way, but its limitations are frustrating even as its design is clean and inviting.
Response from developer
I just released an update that modifies how previews are cached, which may address the issue you're experiencing. While I wasn't able to replicate the problem on my end, I believe it could be related to using system temporary storage for unsaved catalogs. The update is in version 1.4, and the release note highlights: "Optimized thumbnail caching to avoid relying on system temporary storage, reducing the risk of issues when disk space is low, and improving recovery of unsaved catalogs after a reboot." If you encounter any further problems, feel free to reach out to me directly at hello@pixlpath.com. I push out updates quickly whenever an issue is reported.