Ola cab service is useful for public .but this app are harmful for every user who want install on Android phone.because I am a cyber security expert . first u think why Ola free riding on first using .so u can not install this app on mobile. your data.contacts, picture, sms, sent on chines server. and every contacts are selling on black market.
You can install any free service provide service company app u read the term and conditions. your data and information is very useful and impotent.