You want them to eat more
Wanting them to eat more is ordinary. Forcing another bite usually buys a worse meal tomorrow.

Look at the day
Offer the familiar food again at the next snack. Look at the whole day, not one plate. Worry about growth belongs with your child’s doctor.
Breakfast, lunch, and snacks count. A small dinner after a large lunch is not a crisis.
The extra bite
One forced bite often costs the next three meals. Stop at done.
You can put a little more of the food they accept on the plate if they are still eating. That is different from a bite they have refused.
What the app changes
The app helps you plan what to offer. It does not measure whether they ate enough. You still watch the child, and you still call the doctor when growth worries you.
Tonight, a calm ending is the useful thing.
A sentence you can say
“We can eat again at snack.”