This is an open source project

The source code is free to access. Donation helps me to maintain and develop the services and afford the cloud servers costs for hosting and testing.
I tried my best to keep this in low cost with best practice from the beginning.

View in GitHub

€ 60.00 donation received from and € 3.04 fee charged by PayPal

¥ 54.19 donation received from and ¥ 0.05 fee charged by WeChat.