About Bio Lexicon
Bio Lexicon is a comprehensive biology dictionary built for students, educators, and anyone curious about the living world. Browse 557 carefully written entries spanning 11 branches of biology, complete with pronunciations, definitions, real-world examples, etymology, and historical context.
Each entry goes beyond a simple definition. You get the phonetic pronunciation so you can say the term with confidence, the word's etymological roots so you understand where it comes from, a contextual example, and a concise hint to aid recall. Star the terms you want to revisit, search instantly across the entire lexicon, and test your understanding with the built-in quiz mode.
Biology Topics
Explore terms across 11 branches of biology:
Key Features
557 Biology Terms
Every entry includes a definition, phonetic pronunciation, real-world example, etymology, historical context, a recall hint, and related terms.
Rich Term Detail
Tap any term to see its full entry: pronunciation guide, part of speech, definition, contextual example, word origins, and who first described it.
True or False Quiz
Test yourself across 11 topics with 20 questions each. Build your streak, learn from detailed explanations, and track your personal best.
Instant Search
Find any term instantly. Filter by category or browse alphabetically. The entire lexicon is searchable from a single search bar.
Star & Revisit
Star the terms you want to come back to. Your starred terms are always one tap away for quick revision.
Light & Dark Mode
Full support for both light and dark appearance. Study comfortably at any time of day on iPhone or iPad.
Free to Use
Bio Lexicon is completely free to download. The app is supported by ads, including optional reward video ads that give you extra chances during quizzes.
Screenshots
See Bio Lexicon in action on iPhone and iPad.
iPhone Screenshots
iPad Screenshots
Privacy Policy
Last updated: March 2026
1. Introduction
This Privacy Policy explains how Bio Lexicon ("the App," "we," "our," or "us") handles your information. Bio Lexicon is a free biology dictionary and quiz app designed for students, educators, and science enthusiasts.
We respect your privacy and are committed to protecting it.
2. Information We Collect
We do not collect any personal data.
Bio Lexicon 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 terms, quiz scores, and progress are stored locally on your device only.
- No analytics or tracking is implemented by the App itself.
3. Children's Privacy
Bio Lexicon 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. Advertising (Google AdMob)
The App uses Google AdMob to display ads, including banner ads and reward video ads. Reward video ads are optional and allow users to earn an extra chance to continue their quiz streak after a wrong answer.
For advertising purposes, the App requests tracking permission via Apple's App Tracking Transparency (ATT) framework. If you grant permission, Google may use your device's Advertising Identifier (IDFA) to serve personalised ads.
Google may automatically collect and process certain data for advertising purposes, such as:
- Device identifiers (e.g., Advertising ID / IDFA)
- Approximate location (for relevant ads)
- Ad interaction and performance data
These data are collected and processed directly by Google, not by this App.
You can learn more about how Google uses data by visiting:
https://policies.google.com/technologies/ads
If you wish to opt out of personalised ads, you can adjust this in your device settings:
Settings > Privacy & Security > Tracking (toggle off tracking for this app), or
Settings > Privacy & Security > Apple Advertising > Personalised Ads (toggle off)
5. Data Sharing
Since we do not collect personal data, we have nothing to share with third parties. Your information stays on your device. Ad-related data collection is handled entirely by Google AdMob as described above.
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:
Download Now
Start exploring 557 biology terms with definitions, pronunciations, etymology, and quizzes.
Need help? Contact us at contactscienceaplus@gmail.com