: Splinterware offers a free version of iDailyDiary that includes the core journaling tools, rich-text editing, and password protection.

| Feature | How the Serial Number Enhances It | |---------|------------------------------------| | | The encryption key is derived from a hash of your serial number + your personal passphrase , making it unique per licence. | | Two‑Factor Activation | For premium licences, after entering the serial you’ll receive a one‑time code via email or authenticator app. | | Remote Wipe (Enterprise) | If a device is lost, admins can revoke the serial number from the cloud console, instantly rendering the local diary unreadable. | | Auto‑Renewal Reminders | The licence server pings the serial number to check expiration, then sends a gentle reminder to the registered email. |

Instead of risking your computer's security with a serial number for a legacy version: