[upd]: Sai 2 License

You can use the software for a 31-day trial period with full functionality. Once it expires, saving and loading features are disabled until a license is applied. 2. How to Buy and Activate

The "SAI 2 license" isn't actually a standalone product; rather, it is a benefit included with the purchase of PaintTool SAI version 1. Because development shifted entirely to the second version, the developer, SYSTEMAX, offers SAI 2 as a free upgrade to all existing license holders. sai 2 license