The answer to this question depends on a lot of factors, including the type of phone you have, what apps you have installed, how you use the apps, and your phone's battery health. Generally speaking, though, apps that use a lot of resources - like video players, gaming apps, streaming apps, etc. - will take up the most battery life on your phone. Other high-demanding apps include ones that use your GPS, Bluetooth, and microphone.
It's best to check your phone's battery usage to see how each app is impacting your battery life. You can often find this under Settings -> Battery. On iPhones (iOS 12 and higher) you can tap the "Battery Health" option to see how often you are using each app and how it impacts battery health over time. This can help you determine which apps are draining your battery the most quickly.
If you identify an app or two that's hogging your battery life, you may want to consider limiting its usage. You can also look into limiting its notifications and turning off background processes. Additionally, it's a good idea to regularly check for updates for any apps you have installed and delete unused apps. This can help improve battery life in the long run.
