Here are some of my notes/comments/background research relating to these 4 .app domains:


* shootem.app

The catchy name of a popular action packed genre "shoot-'em-up". Could be perfect for something related to this popular genre of games and movies for example.

shoot-'em-up
noun, INFORMAL
- a fast-moving story or film of which gunfire is a dominant feature.
- a simple video game in which the sole objective is to kill as many enemies as possible.


* lookit.app

"Look it up" - a perfect domain for a service related to finding information or something else.

"look up
phrasal verb of look
- search for and find a piece of information in a book or database.
- "the translation process amounted to little more than looking up words in bilingual dictionaries"


* giddy.app

Uplifting, short name which works separately but also combined with .app ("up") leading to several positively defined meanings.
It could be a catchy and fitting dating app name, as "giddy"can be used to describe the feeling of falling in love, feeling silly, happy and dizzy.

giddy /ˈɡɪdi/
adjective
- having a sensation of whirling and a tendency to fall or stagger; dizzy.
  "Luke felt almost giddy with relief"
verb
- make (someone) feel excited to the point of disorientation.


giddy-up
/ˈɡɪdɪʌp,ɡɪdɪˈʌp/
exclamation
exclamation: giddy-up; exclamation: giddyup
said to make a horse start moving or go faster.
"‘Giddy-up!’ he cried and cracked his whip"
Origin
1920s (originally US as giddap ): reproducing a pronunciation of get up .



* messed.app

"Messed up". Could be used as a domain for related to humor, politics, health, covid.

mess up
informal. : to make a mistake : to do something incorrectly.
"About halfway into the recipe, I realized that I had messed up, and I had to start over."