Table 2.
Main features of the 19 selected and evaluated health apps.
| App number | App name; developer | Description |
| 1 | Noom; Noom Inc | It uses behavior change psychology to promote healthier habits, weight loss, and health goals. It can track meals and link to a pedometer. |
| 2 | YAZIO; YAZIO | It is a food diary and calorie counter that also offers diets and recipes, including vegan, vegetarian, and intermittent fasting options. |
| 3 | FatSecret; FatSecret | It is a food diary and calorie counter. It allows the user to scan products barcodes, tracking weight and keeping a record of meals and consumed food photos. |
| 4 | MyNetDiary; MyNetDiary Inc | It is a food log and calorie counter that also provides diets and recipes. It has a food database and a barcode scanner. It also provides motivational messages to achieve nutritional goals. |
| 5 | DietBet; WayBetter Inc | It aims to help the user achieve healthy weight loss and maintain motivation. It offers a support community, customer service, and expert-led games (coaches, nutritionists, etc). |
| 6 | MyFitnessPal; MyFitnessPal Inc | It offers recipes, a meal planner, a calorie counter, and workout plans. It also allows tracking progress and setting macronutrient goals. |
| 7 | MyPlatea; LIVESTRONG | It allows tracking calories and exercises. It also tracks the user’s progress based on calorie and nutrient goals and provides motivation through support groups. |
| 8 | LIFESUM; Lifesum | It functions as a food diary and offers various types of diets and recipes. It also allows tracking exercise and water intake and setting weight goals and health data. |
| 9 | 8fit Workout & Meal Planner; Urbanite Inc | It offers workout routines in different categories (boxing, yoga, high-intensity interval training, etc), along with meal plans. |
| 10 | Freeletics Nutrition; Freeletics GmbH | It acts as a nutrition coach to help the user achieve dietary goals. It guides the user toward healthy eating, recipes, etc, and helps them adapt nutrition to personal goals. |
| 11 | GetFit-Daily Meal Plannera App Prodakshn;OOO |
It provides daily and weekly meal plans to lose, maintain, or gain weight based on the user’s goals. It also calculates nutrients, calories, water intake, BMI, etc, and includes reminders. |
| 12 | HealthifyMe; HealthifyMe | It can act as a calorie counter, provides weight loss and exercise plans, guides sleep hygiene, etc. |
| 13 | Eat This Much-Meal Planner; Eat This Much Inc | It is a meal planner based on dietary preferences, budget, etc, and can be configured for different types of diets. |
| 14 | LIFE Extenda; LifeOmic | It is marketed as a precision health mobile app to help improve users’ health using five pillars of health. |
| 15 | Fastic Fasting Ap; Fastic GmbH | It promotes intermittent fasting with different levels of intensity (gentle, moderate, intense). |
| 16 | Second Nature; Second Nature | It provides a lifestyle change program that helps lose weight and develop healthy habits. Nutritionists guide the user throughout the program. The app also includes a support group. |
| 17 | Uplyfe-Precision Nutritiona; Uplyfe AG | It is marketed as a customized nutrition and lifestyle change app-guided program based on scientific findings. It also provides personalized nutrition plans, activities, and symptom tracking. |
| 18 | Freshwell; Freshwell | Health care personnel promote a low-carb diet. The app provides informative weekly modules, a meal planner, etc. |
| 19 | Contador de calorías; Virtuagym | It provides a personalized nutrition plan according to the user’s lifestyle and goals. |
aNo longer available.