A but clunky but works...

Stable. Check. Adequately intuitive. Check. (no masterpiece in the UI department, though) does the job. Check. Summary: Start with this free app and only go looking for more features after you "get there" (wrt actually needing more not just wanting more).

Make sure your cameras auto shutoff timer is many minutes (WiFi card stops functioning when camera drops power)

curveto about FlashAir