Is it ok to make news apps to have internet connection while opening?

1. Do apps need Internet connection to work?
2. Can apps affect Internet connection?
3. Does having an app open use data?

Do apps need Internet connection to work?

Native mobile apps act as the interface between the user and the users' data and require uninterrupted connectivity. Native mobile apps with offline capability stores both the mobile app's software and its data locally on the mobile device. Offline mobile apps allow the user to run the app, regardless of connectivity.

Can apps affect Internet connection?

If too many devices are hogging up bandwidth, your network connection speed will slow down. Too many active apps or tabs: Too many demands on your data connection will result in speed reductions across the board. Even the fastest mobile data plans can't keep up with dozens of tabs and background apps.

Does having an app open use data?

Does background app refresh use data? Apps refresh in the background to regularly check for notifications. This means, when you get an email, message or Tweet, it's delivered right to your device, whether you're on Wi-Fi or mobile data. So yes, if you're not on Wi-Fi, it will use mobile data.