I can see the attraction these apps have. They are fun and do some wonderful things.
Adrian: It is usually quicker and easier to get an effect in an app (application / program) with a specialist theme than battle with a universal program like Photoshop or Affinity Photo.
makes for a nice 'watercolor' type image.
TWG: Some of the 'drawing' apps do a good job of making artificial sketches or paintings.
My preference is for the original. I can see using various apps to make a mediocre image better, but your image is so good to start with it doesn't need any help.
Wilma: The are some photos I like to see with a border to set them off.
Thank you for visiting. Hope you enjoyed the pictures. Any comment, or correction to any information or identification I get wrong, is most welcome. John