# Codon: Learn Biology โ€” Molecules to ecosystems > Comprehensive offline biology curriculum for self-study and academic learning. (iPhone/iPad app by OMAR DANIEL GRAZIANO.) - Source: https://appshunter.io/ios/app/codon-learn-biology/id6796637767 (this page in markdown: same URL + `.md`) - Developer: [OMAR DANIEL GRAZIANO](https://appshunter.io/developer/1896485759) - Category: Education - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 12+ - Requires: iOS 17.0 ยท 5 MB - Languages: American English - Released: 2026-08-17 - Data updated: 2026-09-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/codon-learn-biology/id6796637767/reviews.md ## What is Codon? A four-year biology curriculum, offline, with no account and no network. Codon covers what an introductory sequence and the first two years of a degree teach: molecules and cells first, then inheritance and molecular biology, then evolution, diversity and ecology, then whole organisms and physiology. WHAT IS INSIDE 100 lessons across four years, each 15 to 25 minutes, with on-device narration 60 researcher profiles, from Mendel and Darwin to McClintock and Doudna 735 glossary terms, cross-linked to the lessons that use them 20 quizzes with worked explanations for every answer 18 landmark experiments reconstructed: Meselson and Stahl, Hershey and Chase, Luria and Delbruck Spaced repetition that schedules the terms you keep forgetting Bookmarks and notes on any lesson, profile or term Three Home Screen widgets: a quote, a term and a figure, each changing daily HOW IT TEACHES The course teaches mechanisms rather than vocabulary. Where a textbook says respiration yields 38 ATP, this one gives the real figure of roughly 30 to 32 and explains why the number moved. Where the field is unsettled, such as the origin of eukaryotes or the tempo of speciation, the lesson gives the competing accounts and who holds them. FREE AND PAID The first ten lessons are free. One purchase of $9.99 unlocks the remaining 90 and everything else, permanently. There is no subscription, there are no ads, and there is no account to create. Family Sharing is supported. OFFLINE BY DESIGN The app makes no network connections. Every lesson, profile, glossary entry, quiz and case study is bundled in the download, so the whole course works in airplane mode. Nothing you read or write here leaves your device. ## Key features - Offline biology curriculum - 100 lessons with narration - Researcher profiles - Interactive quizzes with explanations - Spaced repetition learning - Offline access, no account needed - Home screen widgets ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Codon Full Access | $9.99 | one-time | ## Frequently asked questions about Codon ### What is Codon's learning methodology? Codon focuses on teaching biological mechanisms rather than just vocabulary. It provides detailed explanations for concepts like cellular respiration, offering precise figures and reasoning behind them, and presents competing scientific accounts for unsettled areas of study. ### How much does Codon cost? The first ten lessons of Codon are available for free. A one-time purchase of $9.99 unlocks the remaining 90 lessons and all other content permanently. There are no subscriptions or ads. ### Does Codon have ads? No, Codon is designed to be ad-free. The app explicitly states that there are no advertisements, ensuring an uninterrupted learning experience. ### Can I use Codon offline? Yes, Codon is designed for offline use. All lessons, profiles, glossary terms, quizzes, and case studies are bundled within the app download, allowing it to function fully in airplane mode without any network connection. ### What devices does Codon support? Codon is supported on iPhone and iPad devices. It is designed to work seamlessly across Apple's mobile operating systems. ### How often is Codon updated? The latest version of Codon is 1.1, which was last updated on August 27, 2026. This indicates a recent update, suggesting ongoing development and support for the application. ### What age rating does Codon have? Codon has an age rating of 12+. This suggests it is suitable for users aged 12 and above, covering content appropriate for middle school and high school biology curricula. ### Does Codon offer certifications? The provided information does not mention whether Codon offers any formal certifications upon completion of its curriculum. Its focus is on delivering comprehensive educational content for learning. ## Version history (last 2 releases) ### 1.1 โ€” 2026-08-27 Practice questions have been rewritten so the correct answer can no longer be identified from its shape. Options within a question now share the same form, length and structure, so the right answer has to be recognised rather than guessed. Question wording and explanations were reviewed alongside it. ### 1.0 โ€” 2026-08-17 No release notes. ## More apps by OMAR DANIEL GRAZIANO - [Cycle Cipher](https://appshunter.io/ios/app/cycle-cipher/id6767546105) - [CivBites](https://appshunter.io/ios/app/civbites/id6767999584) - [Decanon](https://appshunter.io/ios/app/decanon/id6768711973) - [Tanksmith](https://appshunter.io/ios/app/tanksmith/id6769517856) - [Roomprint](https://appshunter.io/ios/app/roomprint/id6769752243) - [Liminal: Learn Philosophy](https://appshunter.io/ios/app/liminal-learn-philosophy/id6770075835) All apps by OMAR DANIEL GRAZIANO: https://appshunter.io/developer/1896485759 ## Related topics [omar daniel graziano](https://appshunter.io/ios/topics/omar-daniel-graziano) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*