Weight Gain App

Most calorie apps are built for losing weight. This one is built for putting it on.

Weight Gain works out how much you need to eat to gain, then helps you actually eat it. You get a daily calorie and protein target, food worth logging, a training plan so the gain is muscle, and an honest picture of whether it is working.

YOUR PLAN, IN ABOUT A MINUTE

Tell it your height, weight, age, activity level and how fast you want to gain. It uses the Mifflin-St Jeor equation to find your maintenance calories, adds the surplus for your chosen pace, and splits the result into protein, carbs and fat. Change your weight or your pace later and every target updates on its own.

Three paces: gentle, steady and fast. Or set the calorie target by hand.

FOOD THAT HELPS YOU GAIN

• 415 foods across 20 categories, 256 of them flagged as high-calorie picks
• Search that finds things while you type
• Add your own foods, keep the ones you eat often
• 22 recipes built around a surplus
• 5 meal plans, including vegetarian, Indian vegetarian and plant-based
• Log breakfast, lunch, dinner and snacks, with water alongside

The gain picks are ranked by calories in a realistic portion, not per 100 g. Cooking oil wins on paper. Nobody sits down to a bowl of it.

TRAIN SO THE GAIN IS MUSCLE

• 5 workout plans, from Foundation Builder to a five-day split, including one for home
• 46 exercises
• Log sets, reps and weight as you go
• Every set is pre-filled with what you lifted last time, so progressive overload is a matter of reading a number instead of remembering one
• The plan cycles rather than sticking to weekdays, so a missed Tuesday does not skip a session

SEE WHETHER IT IS WORKING

• Your measured weekly rate of gain, not the one you picked
• Body measurements for chest, waist, hips, arm, thigh and neck, which is what separates added muscle from added waist
• Total gained, BMI, days logged and workouts completed

EIGHT CALCULATORS

Calories, macros, BMI, protein, goal date, ideal weight, body fat and daily water.

BUILT TO STAY OUT OF YOUR WAY

• Works completely offline
• No account, no sign in, no email
• Light and dark themes, or follow your phone
• Metric or imperial
• One daily reminder, and only if you want it
• Your data stays on your device

Gaining weight is slow, and it is easy to quit because nothing seems to be happening. The job of this app is to make the next meal obvious, and to show you that the last month actually moved.

Weight Gain is not medical advice. If you are underweight because of a health condition, or you have been told to gain for a medical reason, speak to a doctor or a dietitian first.