I played the free version on GameJolt, and a week later I bought this. haven't had the time to beat the game yet, as I purchased this today, but it was a worthwhile purchase at $5.

UPDATE
After having beat the game twice, and getting through post-game (minus the survival mode that is currently unplayable, so if you care about your achievement ratio, then don't buy), I'm happy to say this is one of my favorite games on Steam. It's a very skillfully made horror game with a unique concept. This is achieved through combining familiar mechanics from other games. These include: increasing the number of things you have to manage throughout the night as levels go on (FNAF) a faster kind of movement that decreases the more you use it (Slender) and, most importantly (in my opinion) jumpscares that still scare you even though you 100% know they're coming (most of the time). This is also present in Outlast. Of course with any horror game said scares will become dull once you go for beating and completing the game, but they are pretty good initially.