I only watch the type of food I eayt somewhat. Often I eat crap but I still lose weight if I control the portions I eat which is easy to determine. The program I use does track how good my choices are. May be more trouble than it is worth for you, but only thing that worked for me. I use a free powerful program called Diet Power that calculates you basic metabolism rate (BMR) and the calorie budget you have to meet your set goals. which you can set goals, date and weight you want to be at, diets etc and has an extensive food and exercise database which you can add or customize. It rates your diet by a score and you can see how much fat, carbs, etc you eat in a day. You can also go with popular diets like low sugar or Atikins. It can track several other variables beside weight like blood sugar or blood pressure. The program rates food based on that diet and if you get too much of something like sodium,, it lowers your score. It maintains a database of the best recent foods that you can pick. Also tracks water intake. I basically log in the food I am going to eat the evening before and follow the diet. My dietician said to go with a 1850 cal diet and do not log in exercise. Takes about 5 minutes of my time to log in the food as the program lists your favorites which is the food and the portion you normally eat. They say the best diet you will stick too is where you loose 1 to 1.5 lbs a week. Not logging the exercise gets me to 2 lbs a week. Lost 40 lbs so far. Anyway many balk at counting calories. You do need a food scale (cheap on Amazon) and a measuring cup. Tracking my water and clearing up my urine and limiting my carbs (I have diabetes) has been one of the best health benefits I get from DietPower. At resturants, I sometimes weigh stuff but mostly get a doggy bag and halve my meal before I eat it.
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One lb of fat is 3500 calories and you loose weight if your calories burned is more than your intake. So for 1 lb a week weight loss, you need to take in 500 calories less than your BMR.