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AttacheCase vs Kruptos 2: catalog facts
AttacheCase	Kruptos 2
Freemium Personal use is free with optional payment; commercial use requires a paid registration…	Paid Paid software with a free trial.
Windows, macOS	Windows, macOS, Android
Encrypts both individual files and whole folders Available for Windows and macOS	256-bit AES encryption for any file type Encrypted files open on Windows, macOS and Android
Website and documentation are mainly in Japanese macOS version is still in beta and cannot open AttacheCase 5 format files	Paid after the trial Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.