If a program is easy, the settings are usually set in a specific manner, that you can not change if you want to, if you are lucky, you get the way you want, if you are unlucky, you get in a way you don't want want it to be.
If you look at ERUNT, during installation you get this question: Setup can add a shortcut to your Start menu's Startup folder so That ERUNT creates a bacukup of your registry Each time Windows is started. Which means that ERUNT adds all the backups to the folder "C:\Windows\ERUNT" And you can't change it to something else.
In "Tweaking.com - Registry Backup" you can change the backup location, but if you leave it as it is from start it will backup in "C:\RegBackup\". So ERUNT isn't easier in that respect.
So with autobackup in "ERUNT" the program ask when you install it: AutoBackup will always keep recent registry copies of 30 days. Create an ERUNT entry in the Startup folder?
I think it means that ERUNT create one copy per day and saves the copies for 30 days.
With "Tweaking.com - Registry Backup" you have to choose yourself if you want use the Schedule option, if you want, you have to click "Create Schedule" and "Tweaking.com - Registry Backup" makes a copy everytime a user logs in to windows and save it for 30 days or you can choose for yourself.
Erunt doesn't use Task Scheduler, but it's in similar way, with the difference to "Tweaking.com - Registry Backup" that you can not choose for yourself.
The advantage with "Tweaking.com - Registry Backup" is that you can choose many different settings and also that the "Tweaking.com - Registry Backup" takes advantages of Task Scheduler.
I have read that some people have problems with ERUNT'S autobackup in Windows 7: "
Some have had problems with the autobackup feature in Windows 7. This feature makes a complete registry backup every day. For some this doesn't work, so you can accomplish this using the Task Scheduler instead."
http://www.sevenforums.com/software/110635-run-erunt-autobackup-task-windows-7-a.htmlTomas