No scale, no app, no counting. Four hand shapes cover everything on the plate.
One shape for each kind of food.
One or two of each is a meal for most moderately active people.
Your hand is in proportion to the rest of you, it never changes size, and it's at every meal you'll ever eat. Checked against weighing and logging every bite, it comes out about 95% as accurate, for a fraction of the effort.
The starting plate is a guess. Your results tell you which way to move it. Protein and vegetables usually stay put; carbs and fats are the dials.
Eight questions everybody asks in the first week. For all of them: pick an answer and stick to it. Being consistent matters more than being exactly right.
Pick one.