HeightMax

Privacy Policy

Last Updated: June 2, 2026

1. Introduction

UltasDev ("we", "our", "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use the HeightMax mobile application ("the App").

By using HeightMax, you agree to the practices described in this Privacy Policy. If you do not agree with this policy, please do not use the App.

🔒 Privacy First: HeightMax stores ALL your personal data (height, weight, age, measurements) ONLY on your device. We do not collect, upload, or store any sensitive personal information on our servers. No user accounts required.

2. Information We Collect

2.1 Personal Data (ON-DEVICE ONLY - Never Transmitted)

The following information is stored ONLY on your device using iOS/Android local storage. This data is NEVER uploaded to our servers or any cloud service:

  • Height Measurements: Current height, dream height, parental heights, growth tracking
  • Physical Measurements: Weight, age, birthdate, shoe size
  • Personal Attributes: Gender, ethnicity (used only for local calculations)
  • Lifestyle Data: Workout frequency, sleep duration (stored locally)
  • Training Data: Exercise routines, workout history, progress (on-device only)
  • User Preferences: App settings, notification preferences (on-device only)
⚠️ Critical: All the above data stays on YOUR device and is deleted when you uninstall the app. We have NO access to this information.

2.2 Anonymous Analytics & Technical Data

We collect anonymous behavioral data and technical logs to improve the App:

  • Firebase Analytics: Screen views, button clicks, feature usage (NO personal physical data attached).
  • Firebase Crashlytics: Anonymous crash reports and stability logs to help us fix bugs.
  • Meta (Facebook) SDK: Anonymous attribution data to measure the effectiveness of our marketing campaigns.
  • RevenueCat: Subscription status and purchase receipts (NO personal data attached).
✅ What we do NOT collect in analytics: NO height, NO weight, NO age, NO gender, NO measurements, NO personal identifiers.

2.3 Information We Do NOT Collect

  • ❌ User accounts or login credentials
  • ❌ Location data or GPS information
  • ❌ Contact lists or phone book
  • ❌ Camera or photo gallery access (unless you explicitly select images)
  • ❌ Social media profiles
  • ❌ Biometric data

3. How We Use Your Information

We use the collected information for the following purposes:

  • Provide Core Features: Height tracking, training programs, and AI-powered coaching.
  • Personalization: Customizing your experience based on your goals and preferences.
  • AI Coaching: Processing your queries through Google's Generative AI to provide personalized guidance.
  • App Improvement: Analyzing anonymized usage data and crash reports to enhance features and fix bugs.
  • Marketing Attribution: Using anonymous identifiers to understand app acquisition sources.
  • Notifications: Sending reminders and updates (only if you opt-in).
  • Payment Processing: Managing subscriptions through Apple App Store or Google Play Store.

4. Data Storage and Security

4.1 On-Device Storage ONLY

ALL your personal data is stored EXCLUSIVELY on your device. This means:

  • ✅ Your data stays on YOUR phone/tablet (until you delete the app).
  • ✅ We have ZERO access to your personal information.
  • ✅ No cloud sync, no server upload, no external storage for physical data.
  • ✅ Data is deleted permanently when you uninstall the app.

4.2 Security Measures

  • ✅ Device-level encryption (iOS Keychain/Android EncryptedSharedPreferences).
  • ✅ No central database of user health information.
  • ✅ Anonymous analytics only (TLS/SSL encrypted).

5. Third-Party Services

HeightMax integrates with the following third-party services:

5.1 Firebase (Google)

We use Firebase Analytics for anonymous behavioral tracking and Firebase Crashlytics for stability monitoring. Firebase privacy policy: https://firebase.google.com/support/privacy

5.2 Meta (Facebook)

We use the Meta SDK for attribution and marketing performance measurement. This helps us understand which advertisements led you to download the App. Meta privacy policy: https://www.facebook.com/about/privacy

5.3 RevenueCat

We use RevenueCat for subscription management. It receives purchase receipts from Apple/Google and your subscription status. RevenueCat privacy policy: https://www.revenuecat.com/privacy

5.4 Google Generative AI

Our AI coaching feature uses Google's Gemini API. Your queries are sent to Google for processing to provide AI responses. We do not send your personal measurements (height, weight, etc.) to the AI unless you explicitly include them in your chat message.

6. Your Privacy Rights

You have the following rights regarding your data:

  • Access: View all data stored locally on your device through the App.
  • Correction: Edit or update your information at any time.
  • Deletion: Delete your data by clearing app data or uninstalling the App.
  • Opt-Out: Manage analytics and tracking consent within the App settings or device settings.

For questions about your data, contact us at ultasdevelopment@gmail.com

7. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy or your data, please contact us:

8. Summary

🔒 Privacy-First Approach:

  • ✅ Your health measurements stay ONLY on your device.
  • ✅ We collect ZERO personal data on our servers.
  • ✅ We use anonymous analytics to improve the app.
  • ✅ You are in full control of your data.
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