Conflicted about what to do, Jake gave in and decided to stand next to the smaller kid. He knew that since the kid was smaller and younger, he'd end up as the bigger man, even without his enhancement. He just couldn't bear the thought of a kid being bigger than he was.
Keeping his eyes down, he stepped toward the urinal next to the small kid and unzipped. The boy didn't pay him any mind, holding his flaccid dick with one hand as he peed. Pulling out his own dick, Jake couldn't help sneak a peek at the other guy. He felt a bit sorry for the teen, upon eyeing his flaccid cock. It couldn't be longer than 2 inches soft. Finishing up, Jake opened the app and discreetly took a picture.
At once, the app registered the boy's cock size: [Maximum erect cock size is; 4.3 inches in length, and; 3.2 inches in girth.]
Just as the boy finished peeing, Jake slid the slider up to 6.1 inches in length and the girth slider to 4.2 inches in girth. Out of the corner of his eye, he could swear he saw the boy's cock lengthen just a fraction and swell up just a bit as he stuffed it back into his shorts. However, through the boy's shorts it was hard to tell if there was any visible change.
Curious now, Jake dragged up the slider a little more to 9.3 inches, as the boy was washing his hands. When the boy turned around, he had a small but noticeable bulge in his shorts! Jake guessed he probably had a 5 or 6 inch soft cock. However... Jake had a funny idea.
Inconspicuously following the boy into the store next door, Jake waited until he started browsing the shelves. Then taking a finger, he started to slowly drag the length slider up. As he watched, the front of the boy's shorts began to bulge more and more as his cock grew. Jake stopped at the ridiculous length of 16 inches.