- Sky Map: point at the night sky, it tells you which stars are there. Dim screen, offline, perfect.
- Samsung's "Ultra power saving" mode. Turns your smartphone into a dumb phone: phone calls, SMS only, black and white screen. Internet access requires action on your part (i.e. opening the browser). And as you may guess from the name, it really saves battery. Other manufacturers most likely have something similar.
- For most of what you are doing, you don't need any apps. Social media, news and things to learn can all be done on a browser. Pick one with an ad blocker when you are at it (Firefox, Brave, ...).
- On Android, there is a root feature that allows you to freeze apps. I use Titanium Backup for that, but there are other apps that can achieve a similar effect without root (Greenify, Island,...). Frozen apps stay in storage, you keep your data, but they can't be accessed and don't run in the background. It you have some social app that annoys you but you are not sure if you really want it gone, freeze it, and unfreeze it when you need it, if you need it. It saves battery too.
- Sky Map: point at the night sky, it tells you which stars are there. Dim screen, offline, perfect.
- Samsung's "Ultra power saving" mode. Turns your smartphone into a dumb phone: phone calls, SMS only, black and white screen. Internet access requires action on your part (i.e. opening the browser). And as you may guess from the name, it really saves battery. Other manufacturers most likely have something similar.
- For most of what you are doing, you don't need any apps. Social media, news and things to learn can all be done on a browser. Pick one with an ad blocker when you are at it (Firefox, Brave, ...).
- On Android, there is a root feature that allows you to freeze apps. I use Titanium Backup for that, but there are other apps that can achieve a similar effect without root (Greenify, Island,...). Frozen apps stay in storage, you keep your data, but they can't be accessed and don't run in the background. It you have some social app that annoys you but you are not sure if you really want it gone, freeze it, and unfreeze it when you need it, if you need it. It saves battery too.