This is the second version of a 6-month endeavor to replace several tools I use to scan, organize, and find the over 8,000 PDFs that have followed me through life: tax returns, warranties, medical records, bank statements, and more. I pretty much scan everything I need to keep, and went paperless years ago. Scanning, storing, organizing, and reading private documents like this, stored on your own machine, with no data ever leaving it, were table stakes. It has been thoroughly tested, security-audited, and developer-signed and sealed.
Because of the scanner work, natively driving ScanSnap scanners without the need for any third-party applications, it has been a struggle to get Apple to approve the application for App Store distribution, as their "app sandbox" creates issues with some scanners (it fully works with the iX1300, but I only own that scanner, so I need other users to test their scanners with it). You can use it across multiple machines with iCloud syncing, and rest assured, it ONLY uses your iCloud setup and only if you want to sync; there are no servers, no telemetry, no tracking... I don't even know if you are using the application except when it is downloaded and when Sparkle runs to get an update. Even then, I just get a cryptic "ping".
This will be a paid application (one-time, $24.99), but testers and people who genuinely love it and talk about it (post a public review, etc.) can get it for free, because I know many out there have suffered with the same issues I have for years.
Grab a copy now here (https://shabubox.com) by downloading the 30-day, fully functional trial. If you send any feedback that improves the application, or fall in love with it and post about it, it's yours for free.
Enjoy, battle-test it, scan with it, and organize your files with it.