I never write reviews. Writing this one because it's such a good, simple, useful tool.
I've had the ad-sponsored (free) version of this for years and have used it often. Tried a newer, cooler-looking app from iHandy. That one has lots of skins for the flashlight and some fun strobe options. This one doesn't have as many bells and whistles, but it also just turns your phone into a flashlight right after you open it. Launching iHandy's version takes you to a loading screen, then the options screen (where--surprise!--you can buy other apps from them!) Finally you hit the flashlight button and another load screen... And then the light comes on. I have a 4s, so I imagine this lag is worse for many users. It's a difference of like 5 seconds between iHandy and Droid, but if I'm looking for my keys in a dark room or trying to find something when I'm camping, I just don't want to wait for my flashlight to turn on (you'd never put up with that in a maglite, right?) I just want to click once to open the program, and have light. Period. And with this, I do. It loads quick, without upselling you via arbitrary interstitial menus. I Deleted iHandy, and just upgraded to the ad-free version of Droid Light. (Sorry it took me so long to pay for a good program, devs!)
Overly long review of a cheap simple tool? Yes. Worth buying? Yes, easily.