While this may be awkward for your friend to stumble upon while browsing your homescreen, it might prove useful. Poo Log keeps a log of your, well, poo, and tracks trends for you. That's helpful, right?
Price: $0.99
Available for iOS and Android.
Improve your sex life with Passion (not to be confused with the lowercase, non-app version of the word -- that won't help at all). Passion accounts for duration and movement to rate your time under the sheets, helping you learn how to improve.
Price: $0.99
Available for iOS.
If we had a dollar for every New Year's resolution we've made to brush better, we'd have...approximately zero dollars. But then again, we aren't dentists, are we?
The Toothbrush Fitness app acts as a personal trainer for you and your enamel, providing tips, timers and a 3D-animated guide to your mouth.
Price: Free
Available on iOS.
The only weird thing about this app is that, to use it correctly, it requires you tuck your phone into bed with you every night. Anything that requires you to snuggle with your 5C should raise some red flags, but this app checks out. It'll help you track the quality of your sleep and feel more rested in the morning.
Price: $1.99
Available on iOS.
The Daily Water app is a constant reminder to drink more. Like an overly affectionate grandmother, this app will sound an alarm every time you should be drinking H2O.
Price: $0.99
Available on iOS.
Never destroy another relationship with your inability to remember important dates and information again! The Amazing Girlfriend Manager app prompts you to fill out important data about your significant other, including her birthdate, the date of your anniversary and various gifts you have given her. The app even lets you keep track of multiple girlfriends*.
*Using this app to keep track of multiple significant others at once not guaranteed to improve your life.
Price: $0.99
Available on iOS.
If you've spent as much time in the App Store as we have, then you already know that there are some weird app developers out there.
Aside from your standard social, news and gaming apps, there exists another group of apps — along the outer edges of the App Store — that is seriously bizarre. Exhibit A: "Poo Log." These apps are largely out of sight and out of mind, but some of them are actually kind of helpful.
See also: Use These 10 Apps During Downtime
We've compiled a special list of these creepy apps. Check them out, and you just might discover that they're strangely beneficial to your health and productivity.
Have something to add to this story? Share it in the comments.
Homepage image: Mashable composite, Bohrium Labs