It have been using it since last time they had a 1 year giveaway.It is safe to use but has more scan and cleanup options.The PC checkup is similar to CCleaner scans and removes junk files and is relatively harmless.
The System cleaner contains 4 options:
Registry Cleaner
Common Cleaner
Advanced Cleaner
System Slimming
Before you use these you should do a backup.The program gives you 2 options here:
Create a Restore Point or Full Registry Backup
Registry scan and removal is much the same as CCleaner.
You should really be familiar with what you are removing when using all of the above mentioned System Cleaner options especially the Advanced and System Slimming options.
It also has system tune up and privacy protector.Both of these are harmless options.On Windows boot,it monitors your boot time and gives options for you to make changes to increase your boot time.The speed up of boot time can only be used if you have the program set to start with windows.I just use it on demand.
I actually think this is a more in depth cleaner than CCleaner with the same options and more.
It also contains Common Tools such as Privacy Eraser,memory optimizer,Defrag,context menu,startup,ect.
I have ran CCleaner then followed by running Wise Care and Wise Care does find things that CCleaner didnt remove.