Is this software reliable?

Handwriting software is reliable. Handwritten letter is the first social communication tool with voice intercom function built by Skye Network in China, which perfectly combines address book and instant chat, not only supports free SMS chat between friends who write by hand, but also intelligently recommends friends in address book. And provide flexible mass sending, forwarding, mutual blessing and funny SMS recommendation and other intimate functions, which will bring you a smooth and pleasant new way of communication and help you save daily SMS and call costs. A cross-platform mobile social communication software, which can switch between free messages and short messages according to the online status of friends.