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What apps do you use for your phone that are science-based?

My kids just gave us their old Android phones (mine is a Galaxy S5) & I've heard there is an app for just about everything. I've found a number of interesting ones for astronomy, physics, & the identification of various things. What have you tried & what do you love? Hate?

ID apps need to have a downloadable database for me. We're only using the 'new' phones through WiFi right now. Even if we hook them up, we have spotty cell reception around the farm. The app also needs to ID through a picture or a short, easy set of menu choices to be really useful. I found several that might work, but I haven't tried any yet. I'm waiting to get a micro SD card.

I haven't been able to find a good insect/bug ID app. I'd think with 300 lbs of bug for every pound of human, there would be a lot. I found several that might work, but none look particularly easy nor comprehensive.

Butterfly & Insect Collector:


Forest Insect Pests:


NPMA Field Guide:


Aqua Bugs:

My son wowed us years ago with Sky Map. He held it up & showed us all sorts of star & constellation names.


NASA's app looks pretty neat.


Each state seems to have an app for 'wild flowers' which include bushes, vines, & more. Kentucky's is here:

I also got one for Ohio & Tennessee.

The University of Missouri has one for IDing weeds.


North Carolina Forest Service has a tree ID app.


There are a lot of apps for IDing birds. Cornell has 2.
eBird:
Merlin:
Does anyone know the difference between them?

Audubon has one, too.

Whew! Lots to look at. I'd love some guidance so I don't waste time on bad ones.

Hi! I also have Sky Map and it seems nice but I'm waiting for warmer summer nights to test it. One of my favourite app is Wolphram Alpha and I love it!! I use it on my pc even if there is also the mobile version.

Wolphram Alpha is this one?


It looks really neat, like an encyclopedia on steroids.

Jim wrote: "Wolphram Alpha is this one?


It looks really neat, like an encyclopedia on steroids."

Yes, it is. It also seems like a Star Trek Computer. Sorry I've seen your answer so late, goodreads didn't notify me :(

I picked up the Audubon app for birds. Free for my iPad -- loving it! I've used Sky Map for a while now and enjoy it too. Now thinking about shelling out the $2.99 for Wolfram Alpha.

One of my favorite apps is Geogebra:

Katy wrote: "I picked up the Audubon app for birds. Free for my iPad -- loving it! I've used Sky Map for a while now and enjoy it too. Now thinking about shelling out the $2.99 for Wolfram Alpha."

Have you tried Merlin? I have both on my phone, can't say I've fiddled with either, though. Actually, I'm finding very little to do with it save occasionally google something while out in the shop & take photos. My Leica camera is better at that, though.