13 Weight Gain Apps for Custom Plans and Easy Progress Tracking
Trying to gain weight in a healthy, intentional way can feel surprisingly complicated. Eating "more" sounds simple, but in real life it often means figuring out calorie targets, getting enough protein, planning meals, lifting consistently, and tracking progress without becoming overwhelmed. That is exactly where the right app can help: it turns a vague goal into a clear, manageable plan. The best weight gain apps do more than count calories. They can help you build custom meal plans, log workouts, monitor body weight trends, set reminders, and spot patterns that are easy to miss day to day. In this guide, we break down 13 weight gain apps for custom plans and easy progress tracking, what each one does best, and how to choose the right fit for your routine.
What to look for in a weight gain app before you download
Not every nutrition or fitness app is designed with weight gain in mind. Many popular platforms lean heavily toward weight loss, which can be frustrating if your goal is to build body mass, support muscle growth, or recover from being underweight. A good weight gain app should let you set a calorie surplus, track macros like protein and carbs, and adjust targets based on your activity level and rate of progress. It also helps to think about your real-life sticking points. If you struggle to eat enough, look for meal reminders, barcode scanning, saved meals, and easy logging. If your focus is muscle gain, prioritize apps that pair food tracking with strength training plans or progress photos. And if consistency is your biggest challenge, choose something simple enough that you will actually use daily, because even the most advanced features are useless if the app feels like a chore. One more thing: progress tracking should go beyond the scale. Weight can fluctuate from hydration, meal timing, sodium intake, and training volume, so the best apps let you log body measurements, gym performance, photos, and trends over time. That fuller picture helps you tell the difference between meaningful progress and normal day-to-day noise.
13 weight gain apps worth considering for custom plans and easy tracking
1. MyFitnessPal: Best all-around option for calorie and macro tracking. It has a huge food database, barcode scanning, recipe saving, and customizable calorie goals, which makes it useful for anyone trying to consistently eat in a surplus. 2. Cronometer: Best for detail-oriented users who want deeper nutrient tracking. In addition to calories and macros, it gives strong micronutrient insight, which is helpful if you are trying to gain weight without relying only on ultra-processed foods. 3. MacroFactor: Best for adaptive coaching. It adjusts calorie recommendations based on your logged intake and weight trend, which can be especially useful when your planned surplus is not producing results. 4. Lifesum: Best for people who want a more lifestyle-friendly interface. It blends meal planning, habit support, and nutrition tracking in a visually approachable way. 5. MyNetDiary: Best for easy logging and beginner-friendly nutrition tracking. It is straightforward, less cluttered than some competitors, and simple to customize for weight gain goals. 6. Carb Manager: Best if your eating style is lower carb but you still want to gain weight strategically. 7. Eat This Much: Best for automated meal planning, since it can generate meal ideas based on calorie targets, food preferences, and budget. 8. Strong: Best for workout logging if your main goal is gaining muscle through progressive overload. 9. JEFIT: Best for structured strength programs and exercise libraries. 10. Fitbod: Best for personalized gym programming that adapts to your equipment and training history. 11. FoodNoms: Best for Apple users who want a clean, modern nutrition tracker with flexible macro goals. 12. Happy Scale: Best for making sense of weight trends over time, especially if daily fluctuations stress you out. 13. Ate Food Journal: Best for mindful eating and spotting behavior patterns, which can help if missed meals and low appetite are getting in the way of weight gain. The smartest approach is often combining two types of apps rather than expecting one app to do everything perfectly. For example, pair a food tracker like MyFitnessPal, Cronometer, or MacroFactor with a training app like Strong or Fitbod. If meal planning is your weak spot, Eat This Much can fill that gap, while Happy Scale can help you stay focused on trend data instead of obsessing over single weigh-ins.
How to use these apps to actually gain weight consistently
Start by setting a realistic target. For many people, a slow gain of about 0.25 to 0.5 pounds per week is easier to sustain and more likely to support lean mass gain when paired with resistance training. Use your app to set a calorie target that puts you in a modest surplus, then aim for steady protein intake across the day and log for at least two weeks before making major changes. Next, build repeatable systems instead of relying on motivation. Save 3 to 5 high-calorie breakfasts, lunches, dinners, and snacks inside your app so eating enough takes less mental energy. Set reminders for meals, track your body weight at the same time each day or a few times per week, and log gym lifts so you can see whether strength is improving alongside body weight. Finally, review your data like a coach would. If your weight trend is flat for two to three weeks, increase calories slightly, often by 150 to 250 calories per day. If you feel overly full all the time, shift toward more calorie-dense foods like smoothies, nut butter, trail mix, granola, olive oil, dried fruit, and full-fat dairy if tolerated. The goal is not just to use an app, but to use the feedback it gives you to make small, consistent adjustments that move you forward.
Frequently Asked Questions
What is the best app for healthy weight gain?
The best app depends on what you need most. MyFitnessPal is strong for general tracking, MacroFactor is useful for adaptive calorie coaching, and Eat This Much helps if meal planning is your biggest challenge.
Can I use a calorie counter app to gain weight instead of lose weight?
Yes. Most calorie tracking apps let you customize your calorie target, so you can set a surplus instead of a deficit and monitor whether you are eating enough consistently.
Which app is best for gaining muscle and tracking workouts?
Strong, JEFIT, and Fitbod are popular choices for workout tracking and strength progression. They work especially well when paired with a nutrition app so you can monitor both training and food intake.
How often should I track my weight when trying to gain weight?
Tracking a few times per week or daily under similar conditions can help you see trends. The key is to focus on the average over time rather than reacting to normal day-to-day fluctuations.
Do I need to track macros to gain weight?
Not always, but it can help. At minimum, tracking calories and protein is useful, especially if your goal is to gain more muscle and not just increase body weight.
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