Post production on iPhone

Sitting at the job site this morning waiting for more trucks to roll through I decided to kill time by work on an image which was extremely heavy on midtones. I wanted to brighten the image up and clear up some areas which i felt needed a bit more highlights a pop. So, i downloaded the image from my Facebook photo library, saved it to my iPhone and then began running through several photo editor apps. The apps i used were Snapseed to create a blown- out version increasing the highlights then imported to HDR Fusion to blend the two images. Then through Snapseeds selective correction tools i increased/decreased to mimic a dodge and burn process. Lastly i adjusted the over all contrast and added a tilt-shift effect in Snapseed. The images attached are before and after ( hopefully you can tell which is which ). It amazes me what kind if work flow is possible on a PHONE! Though the images are lofi and have a bit too much digital noise to be considered hi-quality the result is pleasing for what it is ( at least to me ). I wonder how tight a 3x3 or 4x4 print would be? Especially using the new grainless printing processes available today?