UPDATE December 20, 2017: Compatibility testing between ForeFlight and iOS 11.2.1 is complete and we are issuing the “all-clear” to ForeFlight customers. Feel free to update at your convenience.
ORIGINAL POST December 13, 2017: We are performing compatibility testing between ForeFlight and the newly released iOS 11.2.1 to ensure that everything is working smoothly. We will update this post with an “all-clear” when testing is completed. Please also stay tuned to our Facebook page or Twitter feed for updates.
Follow this link to learn how you can check which Apple iOS version you are currently running.