1) For regular shooting, plus continuous bursts of photos and some pretty professional tools: Camera Zoom FX. This is the only app I have ever spent money on, and boy, is it worth it. The nice thing about buying something at the Play store is that you can migrate it to all your devices, so even if I were to upgrade to my next window shopping love, the Samsung Galaxy S3 (sharpest camera I've seen on an Android device thus far), I could move my Camera Zoom app with it. What's awesome about it? It lets you set your view to grid or rule of thirds arc, so you can always compose the best possible photo, plus, if you don't feel like downloading any other apps, you can use it to add filters and things too. These are some photos from my Shimla trip I tweaked with it:
Pretty nice, eh? I use this instead of my built-in phone camera app because in a situation I'm taking lots of photos, it lets me take them continuously, without stopping to edit or moderate.
2) For post process photo editing, Aviary. I came across this quite recently, but have really been enjoying putting it to use. It comes in handy once you take your picture and want to add some clarity or filters or crop it. I find this combined with Instagram makes for the perfect picture. It's super easy to use, so my usual process is shoot with Camera Zoom, then later, open the file with Aviary and add whatever tweaks I like. There's some stuff you can only use if you pay, but I find the free stuff quite adequate. Observe:
3) For sharing, Instagram. The filters and square-photo-only rule get boring after a while (you can use Aviary to crop a photo into a square much more intuitively than Instagram's regular crop) but it's so much fun to see how many little hearts your picture can manage. I love following other accounts too, specially zooborns for adorable daily updates of baby animals, and people from around the world. It inspires me to take great photos, and gives me several ideas of what I can do with my own pictures. Here are some pictures from the Zooborns feed. Can you say awwww?
Well, those are my camera recs for Android. Do you have awesome tips you'd like to share? Then we can make a collective for other People Without iPhones!