(Photo: Wikipedia)

Last week, Betabeat highlighted the work of a Canadian doctor who developed a smartphone app to predict the size of a man's member. Enter a dude's height, shoe size, "butt size," age and finger length, and Dr. Chris Culligan's app—called the Predicktor—will predict his penis size.

Turns out that Dr. Culligan wasn't the first tech innovator to take a stab at the penis-size problem. Through September of last year, a company called Magic Apps offered the Chubby Checker, a cleverly-named app that attempted to predict a man's shaft length by his shoe size.

Or maybe the name wasn't so clever. According to a press release, the 1960s sensation Chubby Checker—the guy who popularized "The Twist"—is suing Hewlett-Packard for $500 million, claiming that the company profited from his likeness by offering a platform for the app:

The "app" adversely affects Chubby Checker's brand and value and if allowed to continue, will cause serious damage to the Plaintiff's goodwill and will tarnish his image that he has worked to maintain over the last 50 years.

Unfortunately for the singer, the Chubby Checker app was only downloaded 84 times, at a price of 99 cents a piece, making a big payout seem unlikely. We can't say we're surprised. If you’re not factoring in butt-circumference, you’re really not playing to win.

(Photo: Google Play Store)

So you've been on a couple dates with someone, and you're thinking it's time to let them touch you in some secret places. But what if--heaven forbid--you spend all this time getting to know a person, only to find out he has a tiny penis? There's really no good way to know if you're going to end up with a worm or an anaconda, ya know? The Predicktor, an app that does exactly what you think it does, is here to help.

Say you already know the dude's height, shoe size, butt size, age and finger length, but you want to know how big his erect penis is. You can plug this information into Predicktor, shake the phone, and it will give you an estimate as to just what you're working with here.  The app also comes with some educational features, such as informational literature and the ability to compare your gentleman friend's penis with those of men around the world.

What's more, the app was created by a doctor, so you know you can trust its advice. “It’s not how long your pencil is, but how you write your name," Dr. Chris Culligan told Raw Story.

Don't worry if the app gives you a prediction that you feel is inaccurate. You can always Snapchat a dick pic from a flattering angle to make yourself feel better.

The Predicktor is only available on Android, because Apple hates penis puns.