This is a simple app that helps fix issues updating apps in the Play Store.
Often times, you can get an "insufficient storage" error, caused by duplicate folders in /data/app-lib. Deleting the oldest of the folders fixes the problem.
However, since this app needs to access and delete folders in /data/app-lib, it requires you to be rooted.
Extra info for those who still have issues:
On some phones and configurations, the app will crash. I am aware of this issue and am working to fix the issue.
In the meantime, if the insufficient storage error is a problem for you, you can manually fix the problem through a (root-enabled) file browser: Just navigate to /data/app-lib, then delete all of the lowest-numbered duplicate folders inside.
For example, if you had something like "com.zikaeroh.insufixer-1" and "com.zikaeroh.insufixer-2", then you would delete the first of the two, leaving the highest number only.
Remember, I am not responsible for lost data.
v1.12: More root checks, because people apparently try to use this app without root.