The app booster does seem to have a noticeable effect on the launch speed of apps, definitely.
The battery guardian seems to be useless, it doesn't do much except say "your device is working well", it says it optimises apps by putting them to sleep, but android already has those settings built in. Making the app redundant.
The battery tracker is OK, but like above, the info it gives is already
available and built into android. Its all in the Device Care section. Again another redundant app.
The file guardian is just a recycle bin and this also already exists! So alot of stuff that is redundant unless ur on an old version of android. Redundant app number 3
So, overall, the only one that makes sense and is worth it, is the app booster, that definitely works, i run it once a week. Makes apps launch considerably faster. Fortunately you can have Galaxy Labs without the redundant apps, they are installed individually as seperate apps which are managed by the Galaxy Labs agent.