As far as im concerned, ppg does not consume data, because this app is satellite based.. Even when u start up initially ur start up location us determined by the satellite, so no data is required, i use my ppg app all the time, and im not on data plan.. And when i use it, i off
1.wifi
2.3g
3.data roaming
4.cellular data

And it still works!

Jeez.. no, it'll not consume data if u're using Papago as it is using an offline map, unlike Google maps where the phone need to retrieve the map via 3g data.

The gps will only consume data for like 10cents for initials startup coz the gps need retrieve ur current location by using cell-phone tower nearby, thus it'll send out a packet of data. Once ur gps know ur current location and locked it, then ur phone will not send out any packet data anymore and u're good to go.

Hope u understand the explanation given.

p/s:to pro, if I mistakenly giving the wrong info, plz enlighten me.