Concept/features

Base Features

• personal data entry for daily energy expenditure calculation

 * age
 * weight
 * gender? there has to be a more inclusive way
 * factor for weight loss

• daily stats

 * kcal
 * important macros

• daily meals

 * breakfast
 * lunch
 * dinner
 * snacks

• API calls to online food database
• on-device food database

 * offline entries
 * caches of online food items
 * deduplication with online entries via unique IDs

• Search across both on-device and online food items

 * by name (fuzzy?)
 * by EAN
 * via barcode scan

• submit on-device food item to online database
• entry of new food items on-device

 * selection of unit type (e.g. "100g", "package (360g)", "serving (180g)", "1 piece (60g)", "1 scoop (45g)")
 * fractions or decimal
 * amount presets (1, 1/2, 1/3, 1/4, 1/6, 1/8)

• manual item entry

 * name
 * kcal
 * macros (optional)

• adding of food items from the databases to daily meals

Extended Features

• creation of recipes

 * name
 * ingredients (same entry methods as into daily meals)
 * parts of other meals as ingredients (specially flagged new food entry into on-device database)
 * one or more of
   * number of servings
   * final weight of the result

• adding of recipes to daily meals

 * in servings (in fractions or decimal) if servings have been entered
 * in weight if final weight has been entered

Advanced Features

• connection to Google Health data

 * get/set weight
 * get energy expenditure from activity

• option to account for energy expenditure from activity in kcal calculations
• optional cap for max. accounted for energy expenditure from activity per day