Use and app or paper

An app or a pen and paper can be used to track what you're eating

• MyFitnessPal has become a popular food tracking app. It gives detailed information about different types of food.
• ASA24.com is a self-administered 24-hour dietary assessment tool provided by the National Cancer Institute.
• Weight Watchers or Noom offers support on top of simple tracking and give guidance to your eating.
• HealthyOut is an app to help break down the nutritional information of food from restaurants.

Ultimately, choosing the right app is a matter of preference.