Fitbit has everything I need, the steps, the Heart Rate, it has all of my exercising modes, and it has a fair price. It has a rather simplistic User interface, which I really like to be honest. Highly recommened!
Flipper Zero - A portable multi-tool device styled as a Tamagotchi
Strava - The #1 app for runners and cyclists
Motiv Ring - A fitness tracker you can truly keep on
Lose it! - Snap a photo of your food to get nutritional facts
Tep - Fitness tracker meets tamagotchi. Don't starve it!
MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.