HowTall - Support & Help

Simply open HowTall, tap the "+" or "Add Measurement" button, enter your current height with the date, and save. The app will automatically start tracking your growth journey and creating visualizations.

Height predictions are estimates based on statistical models using your age, current height, gender, and family height data. While our algorithm uses scientific methods, actual height is primarily determined by genetics and may vary. Predictions should be used for informational purposes only, not as medical advice.

Our games are designed to promote activities that support healthy growth:

• Jump Challenge: Builds leg strength and may stimulate growth plates
• Posture Perfect: Improves posture, making you appear taller instantly
• Stretch Master: Increases flexibility and spinal decompression
• Growth Sprint: High-intensity exercises that boost growth hormone naturally

Remember: These activities support overall health but cannot change your genetic height potential.

Posture Perfect uses your device's camera to detect your body position:

• Allow camera access when prompted
• Position your device so it can see your full body
• Stand in front of the camera and follow on-screen instructions
• The app will analyze your posture and provide real-time feedback
• Complete challenges to improve your posture score

Privacy Note: Camera data is processed locally on your device and never stored or uploaded.

Growth challenges are daily and weekly tasks designed to support healthy development:

• Nutrition challenges (drink water, eat protein-rich foods)
• Sleep challenges (get 8+ hours of quality sleep)
• Exercise challenges (complete stretches, jump exercises)
• Posture challenges (maintain good posture throughout the day)
• Consistency challenges (track measurements regularly)

Complete challenges to earn points, unlock achievements, and build healthy habits!

We recommend measuring your height:

• Weekly: For active growth periods (teens 13-18)
• Bi-weekly: For slower growth phases
• Monthly: For tracking long-term trends

Measurement Tips: Measure at the same time of day (morning is best), use the same surface, stand straight with heels against the wall, and measure barefoot for consistency.

HowTall helps you maximize your natural height potential through:

• Tracking growth patterns to identify progress
• Posture improvement (can add 1-2 inches to appearance)
• Exercise routines that support healthy bone development
• Habits that optimize natural growth hormone production

Important: Height is primarily determined by genetics. HowTall cannot change your genetic potential but helps you reach it through healthy habits and optimal posture.

For iOS: Go to Settings > [Your Name] > Subscriptions > HowTall

For Android: Open Google Play Store > Menu > Subscriptions > HowTall

You can also use the "Restore Purchases" option in the app if you've switched devices or reinstalled the app.

Premium subscription includes:

• Unlimited height measurements and tracking
• Advanced height prediction algorithm
• Access to all games (Jump, Posture Perfect, Stretch Master, Growth Sprint)
• Complete exercise and stretching library
• Personalized growth challenges
• Detailed analytics and progress charts
• Cloud backup and device sync
• Ad-free experience
• Export data feature
• Priority support

You can cancel anytime through your device settings:

• iOS: Settings > [Your Name] > Subscriptions > HowTall > Cancel
• Android: Google Play Store > Menu > Subscriptions > HowTall > Cancel

You'll continue to have access until the end of your current billing period. Cancel at least 24 hours before renewal to avoid being charged.

Yes! HowTall Premium allows you to export your complete height tracking history, measurements, and analytics in CSV format. This is useful for:

• Sharing with healthcare providers
• Creating personal growth reports
• Backup purposes
• Using data in spreadsheets or other tracking tools

• Ensure camera permissions are enabled in device settings
• Make sure you're in a well-lit area
• Position your device 6-8 feet away so it can see your full body
• Wear form-fitting clothes for better body detection
• Ensure there's adequate contrast between you and the background
• Try clearing the camera lens
• Restart the app and try again

• Hold your device firmly while jumping
• Make sure motion and fitness permissions are enabled
• Calibrate your device by following the in-app instructions
• Ensure you're on a firm, level surface
• Jump with consistent height and rhythm
• Restart the app if the issue persists

• Check that notifications are enabled in device settings for HowTall
• Verify that Do Not Disturb mode isn't blocking notifications
• Ensure you've set up reminder times in the app settings
• Check that battery optimization isn't limiting background activity
• Try disabling and re-enabling notifications in the app

If issues persist, contact us at support@howtall.app with your device model and OS version.

• Force close and restart the app
• Restart your device
• Check for app updates in your app store
• Ensure you have sufficient storage space (at least 500MB free)
• Clear app cache through device settings
• Reinstall the app (your data should be backed up if you're premium)

• Check if you're signed in to the same account
• Try the "Restore Purchases" option in settings
• If you have cloud backup enabled, try syncing your data
• Check if you've accidentally filtered your view (e.g., date range)
• Look for a backup option in the app settings

If your data is still missing, contact support immediately with details about when you last saw your data.

• Verify that all input data is correct (age, gender, current height)
• Update your family height information if available
• Ensure you're entering accurate current height measurements
• Remember that predictions are estimates, not guarantees
• Height growth varies greatly between individuals

Contact support if you believe there's a calculation error.

Try these steps:

• Tap "Restore Purchases" in the app settings
• Sign in with the same Apple ID or Google account used for purchase
• Restart the app after restoring
• Check that you're using the same device where the purchase was made
• Verify the purchase in your app store purchase history

If this doesn't work, contact us with your purchase receipt or order number.

Refunds are handled by Apple or Google:

• iOS: Visit Apple's "Report a Problem" website or contact Apple Support
• Android: Contact Google Play Store customer service

Include your order number and reason for the refund request. Refund approval is at the discretion of the app store.

HowTall subscriptions are intended for individual use. However:

• iOS: If you have Family Sharing enabled, eligible family members may access the subscription
• Android: Check Google Play Family Library for sharing options

Each user should track their own height data separately for accurate predictions and progress tracking.

• Measure consistently: Same time of day, same location, same conditions
• Play games daily: Build habits with daily Jump Challenge and Posture Perfect sessions
• Complete challenges: Growth challenges help you build healthy habits
• Track lifestyle factors: Note sleep quality, nutrition, and exercise in the app
• Set realistic goals: Height growth is primarily genetic; focus on maximizing your potential
• Improve posture: Good posture can immediately add 1-2 inches to your appearance
• Stay consistent: Growth tracking requires patience and regular measurements
• Use all features: Combine tracking, games, challenges, and exercises for best results

• Measure first thing in the morning (you're tallest after sleeping)
• Stand barefoot on a hard, flat surface
• Back against a wall with heels touching the wall
• Look straight ahead, not up or down
• Use a flat object (like a book) perpendicular to the wall
• Have someone help you for more accuracy
• Record the measurement immediately in the app
• Measure at the same time and place each time for consistency

While genetics determine most of your height, you can optimize growth through:

• Sleep: Get 8-10 hours per night (growth hormone releases during deep sleep)
• Nutrition: Eat protein-rich foods, calcium, vitamin D, and stay hydrated
• Exercise: Regular stretching, jumping, swimming, and sports
• Posture: Practice good posture to maximize your existing height
• Avoid growth inhibitors: Don't smoke, limit caffeine, avoid excessive stress
• Stay active: Use HowTall's games and challenges daily

Remember: These habits support overall health and help you reach your genetic potential, but cannot change your predetermined height.

HowTall's exercises and games are designed for general fitness and are safe for most healthy teens and young adults. However:

• Consult a doctor before starting any new exercise program
• Stop immediately if you experience pain, dizziness, or discomfort
• Warm up before exercises and cool down afterward
• Use proper form as demonstrated in the app
• Don't overexert yourself trying to achieve high scores
• Stay hydrated during physical activities
• Ensure adequate space for jumping and movement exercises

Consider consulting a healthcare provider if:

• You're concerned about slower than expected growth
• There's a significant difference from predicted height patterns
• You experience pain or unusual symptoms
• You have questions about growth disorders or treatments
• You want medical advice about height optimization

Important: HowTall is not a medical device and does not replace professional medical advice.

Yes! Your privacy is our priority:

• All height data is stored securely on your device
• Cloud backup (premium feature) is encrypted
• Camera data is processed locally and never stored
• We never share personal height data with third parties
• You can delete all your data at any time
• See our Privacy Policy for complete details

No. Camera access is only used when you're actively playing Posture Perfect or using camera-based features:

• Camera activates only when you start these specific features
• All processing happens on your device in real-time
• No photos or videos are saved or uploaded
• You can revoke camera permission anytime in device settings
• The app works without camera access (excluding camera-based games)

While HowTall provides tracking and support tools, we recommend these resources for scientific information about growth:

• Consult pediatric endocrinologists for medical questions
• Research peer-reviewed studies on human growth and development
• Speak with nutritionists about growth-supporting diets
• Check reputable health websites for evidence-based information

HowTall provides tools and motivation but should complement, not replace, professional health guidance.