You were looking through the AppStore on your phone. You were so bored and figured you could distract yourself with a new game on your phone. As you endless scroll through the apps you come to the bottom of all the apps. You didn’t even know that was possible. At every end of the page was an app that caught your eye. It was named SWAP APP. It had no description, just a picture of a camera as the app logo. You figured you might as well download it. That is the worst that could happen. You watch as the app downloads onto your phone. When it is done you open the app and it opens to some kind of user agreement, you just accept and move on who reads those things anyways. The user interface consists of a camera button so you can take pictures and a button that says upload. You click on the button. You pick a photo of your girlfriend from your camera roll. Two more options appear saying “select part” and total Transformation. You assumed this was some kind of photoshop app. Clicking on the total transformation button you lock up frozen in place. You look in awe at the phone screen as you watch your body shift your girlfriend’s massive tits slowly grow from your chest. Your hair changes to platinum blonde and grows down your shoulders. Your face became a perfect replica of hers. Your dick slides back into your body leaving your girlfriend’s pussy. Your ass expanded and became plump and round. You unfreeze looking at yourself in disbelief. You say to yourself, “what the hell…” you trail off.

Your voice sounded just like your girlfriend’s. This was crazy. You felt uneasy there was no way you had become her. You take off your pants and look at your new woman hood. You grab at your breasts and squeeze. You bite your lower lip. They were so sensitive. You rubbed at your pussy. You were starting to get wet there. You sit there on the floor playing with yourself. It was an amazing feeling you loved every second of it. You had no idea that playing with yourself as a woman could feel so good. After you climax you grab the phone again. You want to change back. You upload a photo of yourself and hit the total transformation button again. Just as you had transformed before you were back to your old self. This is amazing though. I need to call my girlfriend so she can see this.
You call up your girlfriend and tell her that you have a surprise to show her. About an hour later she is at your place. “What did you want to show me?” She says. “Here, have a seat.” You say. She sits down. “Watch.” You say as you pull out the phone and do as you had done about an hour ago. She watches in amazement as you become a perfect copy of her. “How… what…. How are you, me?!” She yells. You explained to her about how the app allows you to change into people. There was also another button that you think allows you to change specific things but you had not tried it yet. “Let me see.” She says with an arm out wanting the phone. You hand her the phone. She clicks some buttons on the phone. You watch as you watch your girlfriend’s pants get a bulge in them… she pulls down her pants as you watch your dick growing out of where he pussy used to be.

“Go on,” she says “suck it!” Look at her worried. “I don’t want to do that…” you say. “Well, I want you to. It will be nice, trust me. I always loved the way your dick tasted and felt in me. So I figured I would return the favor. And also, I have the phone, and I won't change you back if you are done,” she said with an even grin on her face.
You reluctantly get on your knees and stick the head of the dick in your mouth.
“Oh, come on, don't be shy!” She says, and she grabs the back of your head and pushes the dick down your throat. You choke on your dick. As much as you don’t want to admit it, this was kinda turning you on. The way she was holding your head and how your dick felt in your mouth was something you had never experienced. “That's a good little girl.” She says to you.
You start to go to town on her dick. Blowing and kissing and roaming deep in your mouth. She let out soft moans as you did this, which just made you more hourly. She reached down to your pussy. “Wow, you are wet down there. Do they satisfy you?” You look up at her and say softly, “Yes, please.” He softly pushes you over, and you land on the ground on your back. She jumps on to you ramming her cock deep in your pussy as she does. You let out a loud moan as her large dick hit your tight pussy. It felt so good. She kept fucking you, ramming in and out slow at first, then faster and faster. She did this, and you climaxed two times. “I think I’m about to cum” she yells. “Give it to me! Ram it deep in me! I want to be filled with your lov…..”

you were just off right as she exploded inside of you. It felt so good. She pulled her dick out of your pussy and sucked it in your mouth again so you could lick up the rest of the cum. It tasted so good. The two of you sat and cuddled for a while on the gourd. “That was amazing,” you whispered to your girlfriend. “Yeah, it was. Next time maybe we should become someone else.” She says with a sly grin. You were gitty about the idea of doing that again. That swap app was amazing
GIF credit : https://www.deviantart.com/mindiflyth/art/GIRLY-GIRLIFIED-A-TG-TF-GIF-1025840062