IK Multimedia iRig BlueTurn

Great little pedal I use with the OnSong app on my iPad. One tap scrolls down (or up) and when you reach the end the next tap will forward to the next song in the set. The up button reverses that process. Not sure about other apps but OnSong lets you set the scroll rate to adjust how far down it goes as well as change the functionality of the buttons for a variety of different tasks.
AAA Battery power and am ON switch on the underside are the only negatives. You can buy a battery power adapter online if you want this on your pedal board. I just have a little velcro holding it to my board so it's no bother to switch on and off.

After starting to have more and more songs to play as a cover with guitar it was hard to remember every single chord so a tablet was needed. But it is hard to have all visible on a single page and swiping over the tablet during playing is even harder.
At the beginning I was having some issues since it was not working as expected: I started to have ready PDF-Files and wanted to turn the pages. But that was the wrong approach. I switched to the App "My Songbook" where another chord format was used, it was awesome: Easyly connected via bluetooth and possibility to change the behaviour of the both footswitches I cannot imagine working without that devices.

Check at the beginning if the app of your choice is designed for having a bluetooth footswitch or check alternative apps.

Mine started using up a pair of batteries in only 3-4 hours which is unusual so I wrote iRig and after a week I received an answer asking to show where I bought it. By that time I had already sent it for repair. After six weeks in repair Thomann sent it to the wrong address and name and after it was sent back they sent it to the wrong address and name a second time again (even though I sent them two emails and made sure my address book has only my current address and nothing else) I found out that now it didn’t work properly.
Thomann really disappointed this time.
I asked for a refund.