Comparatively cheap, works well.
After leaving an initial poor review, I have been assisted by Paucwho has done an excellent job and has restored my faith in Jetpac. My earlier attempt at getting help got due to someone who was not at all able to assist. Thanks to Pau I think it's fair that I adjust my review. I'm now happy to recommend Jetpac. Just one caveat: the app does not work well when registering your flights for lounge access in case of delays. Jetpac staff can do it for you if this happens.