v1.5.5
- Changes made for installation prompt on Android devices - Chrome version 92 or greater.

- Display of warning message when operating on Android or iOS, but not installed onto homescreen, revised.

- Content Security Policy added.

- Code added to increase likelyhood of browser storage being persisted.

v1.5.0
- Revisions to user interface. Paypal link now displays more consistently.

v1.4.3
- Calculations corrected for sensible-only heat recovery systems with condenstion occuring in airstream.

v1.4.2
- Reminder notice added for Android and iOS if the app has not been installed on, and launched from, the home screen.

v1.4.1
- Revisions to ensure app can always operate offline.

- Revisions to Project Files page to prevent errors when resizing the window on desktop machines.

- Minor changes to user-interface.

v1.4.0
- Miscellaneous changes to file handling.

v1.3.2
- Additional chart details when running on desktop or tablet.

- Conditions at cursor location shown when on desktop or tablet - right-click to toggle on/off.

v1.3.1
- Dark mode implemented for supporting OSs.

- File sizes reduced for faster updating/loading.

v1.3.0
- Major internal changes for compatibility with macOS Catalina/Safari 13, iOS 13 and iPadOS 13.

v1.2.1
- Project files can now be renamed.

- Contents of project files can now be reordered.

v1.2.0
- Now fully compliant with Progressive Web App (PWA) specifications.

- On Windows and Mac, Psyclone UV can be run as a standalone app from the desktop (Chrome browser only).

- Backup/recovery system for registration codes built into app.

v1.1.0
- System data can now be added to project files and output to pdf.

v1.0.0
- Initial release of Psyclone UV universal webapp.

- Supersedes Android v3.04, iOS v.2.02 and Windows v.2.02.

- Vertigo unit conversions app included.