A study conducted by Appthority shows that free iOS applications download are likely to collect more personal data in relation to the free apps present on Google Play.
According to the report, the volume of downloads on App Store is very high due to which iOS developers are more likely to collect user data and to pass it for advertising purposes in anonymous form. The analysis shows that 60% of the top free apps on the App Store make such operations, compared to 50% of the Android app. Still, 60% of the iOS apps collect location data as compare to 42% of the Android apps, while 54% of iOS apps extract information from the contact list, compared to 20% on Android.
Report says that:
“Of the 100 free apps – 50 Android apps and 50 iOS apps in five equivalent categories – iOS apps exhibited more risky behaviors. In fact, all 50 iOS apps (100%) and 46 of the Android apps (92%) send and receive data without encryption. This potentially includes user data collected by the app and delivered back to the developer.”
All these apps send data without encryption, so it is not encrypted even if they remain anonymous. You can read the full report here.