I can certainly vouch for it as a sprite drawing, animating AND tile map/tile creation program. As an over decade long professional game artist who spent most of that time doing pixel art for mobile games, I can say with confidence it's pretty much the industry standard and by far my pixel art tool of choice. Also, the creator, Jan Zimmerman is an awesome guy who's very receptive to feedback. He's implemented several features based on the requests of myself and others over the years.
-Mike (not speaking on behalf of BrashMonkey atm, just as a pixel artist who loves pixel art)