Hey @kaalthar, 
and welcome to the community!
This looks like a really great idea for an app. In relation to your question:
Right now, this wouldn’t be possible unfortunately. However, you could use an approach like the Cafe sample app for the Data Viewer Grid?
Simple click on the tackle you want to use and then have + and - buttons on the screen to change the count.
Would something like that work for you do you think?