We have already updated ShotList for iOS11, and to add support for iPhoneX screens.
The current version of MailShot still works great with iOS11, although an issue has been reported with Share extensions from Safari and Photos.
iOS11 seems to have an issue with group messaging, it appears the “Group Messaging” switch on the Messages page in Settings does not allow larger MMS groups, as it dd before. This seems to affec all non-Apple messaging apps including TextShot. We have reported this to Apple, and are investigating at the moment.