Comparison

BMI calculator vs Gain Weight

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

BMI calculator

Features
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Weight loss starts with clarity. WeightNote is a simple BMI calculator and daily weight tracker โ€” built for people who want to make progress without obsessing over every detail. Log your weight in seconds. Watch your BMI shift as you stay consistent. Clear trends replace guessing. Small wins turn into real progress. No pressure. No complexity. Just steady movement toward a healthier you. Everything is included with WeightNote Pro. There's no free tier โ€” every feature is unlocked with a Pro subscription. BMI calculator Daily weight logging Trend tracking & progress overview Choose the plan that works for you: Weekly โ€” full access, billed weekly Yearly โ€” full access, billed once a year (best value) Subscriptions are charged to your Apple ID. Cancel anytime in your App Store settings. Unused trial time is forfeited when a subscription is purchased. https://snapmonolab.com/mobile-app-terms-of-use/

About

Gain Weight

Features
Read full description

Gaining weight, made simple. UBulk helps skinny guys gain weight and build muscle with personal calorie targets, a workout plan and progress tracking in one app. Your first workout, another fresh start or a bulk you've already begun. You don't need a perfect routine to get going. UBulk gives you a clear starting point and the tools to keep showing up. Know how much to eat Get daily calorie and macro targets based on your body and weight gain goal. See what you've eaten and what's left, including protein, carbs and fat. Stop guessing whether you're eating enough to gain weight. Spend less time logging food Snap a meal photo for AI calorie and macro estimates, scan a barcode or nutrition label, search for foods or add your own. Adjust portions when needed. Save your usual foods and meals so your everyday shake doesn't become another daily chore. Know what to do in the gym Start with a workout plan matched to your experience, training days and setup. Follow animated exercise demos and log sets, reps and weights as you train. Organize your workout week and see the sessions you've completed. Gym, home gym or bodyweight training. Get help with your next step Ask the AI coach about your bulk. It uses your profile, goals and today's food log to make its advice relevant to you. Need a high-calorie shake or a different exercise? Get food ideas with ingredient amounts and macros, or review a workout draft and save the changes you want directly in UBulk. See how far you've come Record your starting weight and photos, then follow your weight trend and progress gallery. Keep track of streaks and milestones. Create an AI goal image from your starting photo to picture what you're working toward. Built for gaining, not cutting If you're a hardgainer, getting started can feel like endless research. UBulk brings your calorie tracker, workout log, weight tracker and coach together around one goal: helping you gain weight and build muscle. Start your bulk 1. Tell UBulk about your body, goal and training setup. 2. Get your personal calorie targets and starting workout plan. 3. Log your meals, follow your workouts and track your progress. Download UBulk and start your bulk. EULA regarding subscriptions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BMI calculator4 screens
Gain Weight4 screens

Verdict

The call

The clearest difference is iOS requirement: Gain Weight at 16.4 against BMI calculator's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. BMI calculator sells 2 in-app purchases, starting at $0.99 per 7 days and Gain Weight sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BMI calculator ships an update every 6 weeks, Gain Weight monthly. The most recent releases landed on October 25, 2026 and November 1, 2026 respectively.

Scorecard1 real difference ยท 6 level
BMI calculator versus Gain Weight: the parameters behind the verdict, then further details
ParameterBMI calculatorGain Weight
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 6 weeksMonthly โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.016.4 โ€” better
Further details โ€” not scored
Size28 MB80 MB
Age rating4+4+
DeveloperJeronimo LandauerMax Mannstein

In-app purchases

2 purchases

BMI calculator

Subscriptions2
  • Weekly Access$0.997 Days
  • Yearly Access$14.991 Year
3 purchases

Gain Weight

Subscriptions3
  • UBulk Pro Monthly$5.991 Month
  • UBulk Pro Weekly$5.997 Days
  • UBulk Pro Yearly7 Days trial$34.991 Year

Questions

Is BMI calculator free?
BMI calculator is free to download, with in-app purchases available.
Is Gain Weight free?
Gain Weight is free to download, with in-app purchases available.
Do BMI calculator or Gain Weight have ads?
Neither BMI calculator nor Gain Weight shows ads.
Which is updated more often, BMI calculator or Gain Weight?
BMI calculator ships an update every 6 weeks, and Gain Weight monthly. Most recently, BMI calculator was updated on October 25, 2026 and Gain Weight on November 1, 2026.

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