About Bio Hormones
Bio Hormones is a comprehensive reference and learning app for biology students and anyone interested in understanding hormones and the endocrine system. Browse an extensive library of hormones, organised by gland and hormone type, with detailed information on each one. Test your knowledge with the built-in Hormone Quiz featuring 100 multiple-choice questions with detailed explanations.
Every hormone entry includes its source gland, chemical classification (peptide, steroid, glycoprotein, amino acid derivative, etc.), function and role, clinical significance, and pronunciation guide. Star your favourites for quick revision, use the search to find any hormone instantly, and add the Hormone of the Day widget to your home screen for passive learning.
Hormones by Gland
Filter hormones by their source gland or tissue to focus your study:
Key Features
Comprehensive Hormone Library
50+ hormones with detailed information including function, clinical significance, etymology, and chemical classification.
Filter by Gland
Browse hormones organised by their source gland or tissue — from Pituitary to Pancreas, Adrenal Glands to Adipose Tissue.
Detailed Flashcards
Each hormone card includes pronunciation, chemical type, function & role, clinical significance, and more.
Search
Quickly search hormones and glands to find exactly what you need.
Star Favourites
Mark hormones as favourites for quick access during revision. Starred cards sync across all your devices signed in with the same Apple ID via iCloud.
Hormone Quiz
Test your knowledge with 100 multiple-choice questions covering all aspects of hormones. Each question includes a detailed explanation to reinforce your learning.
Dark Mode
Full dark mode support for comfortable studying in any lighting condition.
One-Time Purchase — $4.99
Bio Hormones is available for a one-time payment of $4.99 USD. No in-app purchases, no subscriptions, no ads — just buy once and enjoy full access to the entire hormone library, quiz, and widget forever.
Screenshots
See Bio Hormones in action on iPhone and iPad.
iPhone Screenshots
iPad Screenshots
Privacy Policy
Last updated: February 2026
1. Introduction
This Privacy Policy describes how Bio Hormones ("the App," "we," "our," or "us") handles information. The App is an educational reference application designed to help users learn about biology hormones and the endocrine system.
We respect your privacy and are committed to protecting it.
2. Information We Collect
We do not collect any personal data.
Bio Hormones operates entirely on your device. We do not collect, store, transmit, or share any personally identifiable information (PII) from users.
- The App does not require user registration or accounts.
- The App does not access your photos, contacts, location, or any personal data.
- Starred hormones are synced across your devices via iCloud using your Apple ID. This data is handled entirely by Apple's iCloud service and is not accessible to us.
- No analytics or tracking is implemented by the App itself.
3. Children's Privacy
Bio Hormones is an educational reference app suitable for all ages. We are committed to complying with the Children's Online Privacy Protection Act (COPPA) and similar regulations worldwide.
Since we do not collect any personal information, there is no risk of users' data being shared or misused.
4. Tracking & Advertising
Bio Hormones does not contain any advertising. The App does not use Google AdMob or any other ad network. The App does not request tracking permission via Apple's App Tracking Transparency (ATT) framework. No advertising identifiers (IDFA) or tracking data are collected.
5. Data Sharing
Since we do not collect personal data, we have nothing to share with third parties. Your information stays on your device.
6. Changes to This Privacy Policy
We may update this Privacy Policy periodically. Any updates will be reflected on this page with a new "Last Updated" date.
7. Contact Us
If you have any questions or concerns about this Privacy Policy, please contact:
Trusted Medical References
The content in Bio Hormones is informed by and consistent with information from the following trusted medical and educational sources:
- Endocrine Society — Endocrine Library
- NHS — Hormones Overview
- Johns Hopkins Medicine — Hormones and the Endocrine System
- MedlinePlus (U.S. National Library of Medicine) — Hormones
- Mayo Clinic — Endocrine & Hormone Resources
- You and Your Hormones (Society for Endocrinology)
Bio Hormones is an educational reference app and is not intended to provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional for medical concerns.
Download Now
Explore the world of hormones and the endocrine system with Bio Hormones. Browse detailed flashcards, test yourself with 100 quiz questions, and learn passively with the Hormone of the Day widget. Available for a one-time purchase of $4.99 — no ads, no subscriptions.
Need help? Contact us at contactscienceaplus@gmail.com