Opportunity
Lumen positions itself as the 'nutritionist in your pocket'. The app helps you know what and when to eat to improve your metabolic flexibility, reach morning fat burn, or fuel your workout. This is the base for reaching weight loss goals.
But up until now, users had to use other apps in order to keep track of their daily macro budget (ie. how many grams of carbs, protein, and fat they are allowed each day) and it is obviously not ideal to jump from one app to the other.
Today’s best nutrition apps provide users with tools and resources to help them take control of their nutrition and health through better eating. So whether it's to lose weight or switch to healthy habits, Lumen had to provide a better way for people to reach their nutritional goals.
Data & assumption
The assumption is that by adding a food log functionality to the product, users will be more engaged since they will be able to follow their nutrition plan more easily and so eventually can be retained for longer.
Validation
* Data shows that users that count carbs are 30-40% more retain on day 14
* Customer feedback shows the food log is one of the highest requested features from the users
So who are the users?
* Weight loss persona is someone who struggles to lose weight. They already tried different diets and will use Lumen to follow the nutrition plan that helps them reach fat burn in the morning.
* Metabolism control persona is someone who wants to understand his body and his metabolism to give the way for a “better me”. They will want to use Lumen to optimize their metabolism through data.
Food log user stories
A food log is like a daily diary of what you eat and drink every day. It helps you take conscious of your eating habits and also understand what you have eaten already and how much you have left for a specific day. This is the most popular way to keep track of a nutritional budget and follow a diet.
As a user, I want to:
* Sum and save the macros (carbs, protein, and fat) of foods and ingredients in a meal to know how many macros were consumed in that meal and how much is left to consume from the plan
* Switch between food log (full food log experience) and carb log only
* Log simple numeric macros to input macros quicker
* See logged meals from previous days to reflect on how my actions affected my metabolism
* Take a measurement in the context of a specific meal to understand how that meal affected my metabolism
* Create custom food or ingredient and translate them into macros
* Specify the serving quantity of a food item so the translation into macros will be accurate
