Apps you can't do without on your phone/tablet

[Jason]

Interesting selection! I like doing these lists because we learn about other apps and alternative ways of doing things. I knew something amateur radio related would be in there somewhere.

You mentioned going to the YouTube site using Opera instead of using the app. Do you ever do this over data and not just wifi? Normally, if there is a choice between doing something in the browser on a phone/tablet or using an app built for it, the app will have less data transfer. It may use compression to deliver the data from the server to the device. Or may just transfer less data by truncating a lot of the normal overheard of transmitting webpages (GET/REPLY commands, etc.) and probably uses videos/image sizes that are designed for smaller devices which results in less data transfer, too. If you're doing it all over wifi, it obviously doesn't matter except that videos might start faster. You can also get picture-in-picture with the app which can be useful.

[ssfc72]

I only have 100MB of Data/month on my phone Data plan, so I would only use Data to browse web sites that do not have much graphics/media.
The Opera browser, I believe, does use some compression and other tweaks, to minimise data usage.  The browser also can be changed from mobile to desktop usage, in case the mobile website is crippled too much and you need to view the desktop version of a website, to get better information.

[Jason]

Ah, I see. I don't know if you can still do this but remember when the web was super slow even though it didn't have a lot of pictures? And the browser let you turn off images completely so you could browser faster?