How can I factory reset my Rekordbox iPhone App..?

best way it to delete the app, this will delete all imported music and data

yeah but this is not good way, cause this will also delete all settings :/

a simple: "Delete Content" Buttion would solve this problem much better ;). or better, if i delete a track or a playlist, that also the track and the database entry will be deleted and not just the entry in the playlist. 

Which settings are you concerned about? Theres not that many, LOL

You can set the settings in RB on he laptop and it will carry over to the phone

at least it updates the "My Settings" area. the others like "Categories" you would have to redo so I can see that being a little bit if a pain

sure not much settings but anyway...

btw: if i transfer the content from computer on my iphone, the "my settings" would not be transfered :/

I tried it and it does for me, the second i connect the phone a box comes up that says "Do you want to update MY SETTINGS on device", I clicked yes and all the settings changed on the iphone in the my settings area like auto cue levels, brightness, etc.....

You can try again by changing some of the settings on the phone and reconnecting, it should re-prompted you being it sees a change between the laptop settings and phone settings

hmm ok i will test it later...

if i remove a track from a iphone playlist and if I then update my collection, the track still appears on the computer playlist...

correct, you would have to delete the track from the root TRACK view, they should have a setting in the phone app like there is in the laptop program where you can choose to delete track from library if playlist is deleted too

you can however, after testing this, remove the tracks from RB in a playlist one by one. If you are in a playlist and want to permanently delete a track, tap and hold it and then choose "remove from rekordbox", this will completely delete the track