MainGain
Health & Fitness
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Stop guessing your maintenance calories. Track for 14 days and discover your true numbers with scientific precision. Privacy first, no BS tracking.
MainGain - Your Maintenance Calculator
Finding your maintenance calories shouldn't be complicated. MainGain removes the guesswork with a scientifically-proven 14-day tracking approach.
WHAT IS MAINTENANCE?
Your maintenance calories are the exact amount you need to eat to maintain your current weight. It's the foundation for any fitness goal - whether you want to bulk, cut, or recomp.
WHY 14 DAYS?
Your daily weight fluctuates 2-4 lbs from water, sodium, and meal timing. Traditional calculators guess based on averages. MainGain uses your actual data to find YOUR unique
maintenance calories.
THE SIMPLE PROCESS
• Track your meals (calories & protein minimum)
• Weigh yourself each morning
• Let the science work for 14 days
• Get your personalized maintenance calories
FEATURES
• Clean, distraction-free tracking
• Barcode scanning for quick entry
• Product search for items without barcodes
• Export your data anytime (CSV/JSON)
• No ads, no social features, no BS
• Privacy-first: all data stays on your device
PERFECT FOR
• Finding your true maintenance calories
• Planning bulks and cuts with precision
• Anyone tired of generic TDEE calculators
• People who want accurate, personalized results
HOW IT WORKS
MainGain uses the relationship between your calorie intake and weight changes to calculate your exact maintenance. If you ate 2,400 calories daily and lost 1 lb over 14 days, your
maintenance is actually 2,650. No more guessing.
PREMIUM FEATURES
Try all features free for 7 days, then unlock forever for $4.99:
• Barcode scanner with camera
• Search millions of food products
• Export data as CSV or JSON
• Manual barcode entry
PRIVACY PROMISE
MainGain is designed with your privacy in mind. All data stays on your device. No account required, no cloud sync, no tracking. Your health data is yours alone.
Start your 14-day discovery today and never guess your calories again.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Maxwell Isley, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Maxwell Isley
- Size
- 1.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- MainGain Pro $4.99
- Copyright
- © Stone Door Studios, 2025