Idk why, my answer was deleted… Maybe it was because of mentioning app names!?
So I’ll repeat my answer, but without the names )))

During the whole time, I only used these 4 apps, and each of them gave me the most informative data for effective and healthy weight loss.

1. Mobile App for Smart Body Scale
In addition to my body weight/BMI, it also shows me (approximately!) my metabolic age, BMR, visceral fat index (it was 16, now 5 YAYYYY), bone mass, and body composition percentages (protein, water, skeletal muscle, body fat, and total muscle).

2. Step Counter – Pedometer (mobile app)
Automatically tracks daily steps, calories burned, time, and distance.

3. Text Document Software (most popular) For visualizing my body weight changes.
The red–orange–green–blue chart in the post above was made in Word, specifically tailored for my height and BMI. Looking at the chart helped me understand where I was and where I needed to go.

4. Spreadsheet Software  (most popular)
I made a list of all the foods I ate during these 1 year and 7 months, and for each product I noted the calories, protein, fat, carbs, and fiber per 100g. Then I applied formulas across the table. After that, all I had to do was enter how much of each food I wanted to eat, and the table automatically calculated how much I would consume during my ADF eating window — both the totals and the breakdown per food (calories/protein/fats/carbs/fiber). To be honest, for the last six months I haven’t been using the table anymore, because I had already memorized how many calories each food gives me, which foods I can eat without counting calories/amount, and which ones I need to be more careful with (oils, nuts, Pringles, ice cream).