I’ve been a user of the LoseIt app on my iPhone for years and I initially dropped from 190lbs to 160lbs, and I’ve been “hovering” in the 160’s for several years, now. When my weight approaches 170lbs, I “get serious” about the calorie count until I get down to where I prefer to be.
The app also makes it easy to find nutritional information (sodium, sugar, macronutrients, etc.) on lots of different foods (especially restaurant food, which can have massive calories!). It’s really rare that I can’t find a food in their database.