Sounds good. Look forward to the iOS app especially for Bangalore roads .
Since you say it is all mobile sensor data and if you are open to discussing then,
1) Does the type of car being used makes a difference ? Shock absorbing quality of the vehicles effects the readings ? Traveling in an auto should need higher threshold levels ?
2) Driving speed matters ? High speed driving over a bad stretch and low speed over a bad stretch creates any difference ? Low speed should reduce the impact.
3) What all permission is needed to access this kind of data ?