Boss RC-1

The RC-1 looper does what it says: loop your playing, but that is that.
It is very basic in its features, as you pretty much only have the option to, record, pause, unpause, and erase your loops. It is a bit hard to understand, as it actually is possible to erase the recent loop you've just made, but I often, end up erasing the whole loop on accident. If you have a footswitch to help this would probably make it easier.
One thing I am using a lot is the light on the pedal, as this shows where you are in your loop, which is very nice when you're looping long sections as you won't get lost in the whole thing.
It is overall a good looper which holds up its duty perfectly and I can only recommend it, but you could consider the RC-3 aswell, as it is an upgraded version of this one.