My wife is afraid of flying and uses an app called SkyGuru (I think). It uses your phone's accelerometer to measure turbulence and let you know the plane isn't

My wife is afraid of flying and uses an app called SkyGuru (I think). It uses your phone's accelerometer to measure turbulence and let you know the plane isn't likely reaching its structural limits and I think it also uses a timer to guess when certain sounds will be heard (landing gear retracting, flaps going up, the ding when the plane reaches 10k feet). She said that it has helped