Codon: Learn Biology

Codon is a four-year biology course that works offline. Lesson 1 starts at water and pH. Lesson 100 ends at synthetic biology and the genomes people now write from scratch. Between them you cover cells, metabolism, inheritance, gene expression, evolution, ecology and the physiology of whole organisms.

The 20 courses carry numbers, 1.1 through 4.5. Read straight through, or open the one you came for.

The first 10 lessons are free, and there is no subscription.

THE CURRICULUM

Year 1: Molecules and Cells (5 courses, 25 lessons)
1.1 The Chemistry of Life; 1.2 Cell Structure; 1.3 Metabolism; 1.4 Cell Division; 1.5 Methods in Biology.

Year 2: Genetics and Molecular Biology (5 courses, 25 lessons)
2.1 Mendelian Genetics; 2.2 DNA and Replication; 2.3 Gene Expression; 2.4 Genomes and Regulation; 2.5 Biotechnology.

Year 3: Evolution, Diversity and Ecology (5 courses, 25 lessons)
3.1 Evolutionary Mechanisms; 3.2 The History of Life; 3.3 Diversity of Life; 3.4 Ecology; 3.5 Behavior and Evolution.

Year 4: Form, Function and Systems (5 courses, 25 lessons)
4.1 Animal Physiology I; 4.2 Animal Physiology II; 4.3 Immunology and Disease; 4.4 Plant Form and Function; 4.5 Biology and Society.

WHAT IS INCLUDED

- 100 lessons across 20 courses, with source-backed paraphrases and citations
- 82 biologist profiles, among them Darwin, McClintock and Woese
- A 735-term glossary
- 20 quizzes with 120 questions, each answer explained
- 18 landmark cases, from Mendel's pea crosses in 1866 to the 2021 edit of the BCL11A enhancer for sickle cell disease
- 10 fields of biology, with the courses, biologists and terms that belong to each
- Spaced review over the whole glossary, with the next interval printed on every rating button
- Read-aloud on every lesson through your device's text-to-speech service
- Search across courses, lessons, biologists and glossary entries
- Progress by year and course, plus bookmarks and private notes
- Three home-screen widgets: Source Idea, Term and Biologist of the Day

FREE PREVIEW AND FULL ACCESS

The preview covers all of 1.1 The Chemistry of Life and all of 1.2 Cell Structure, 10 lessons ending at the cytoskeleton. The biologist profiles, the glossary, every quiz, the landmark cases, spaced review, search, bookmarks, notes and widgets cost nothing either.

One purchase opens the remaining 90 lessons. The purchase restores on devices using the same Google account. There are no ads and nothing else to buy.

OFFLINE AND PRIVATE

The curriculum and the reference library install with the app, so lessons, quizzes, profiles, glossary entries, landmark cases and review work with no connection. Codon has no sign-up and requests no internet permission, so it cannot open a connection of its own. The Google Play Store app on your phone carries out the purchase and the restore, and support, privacy and source links open in your browser.

Codon keeps progress, quiz attempts, bookmarks, notes and review state on the device. Android's cloud backup and device-to-device transfer can copy that data to a new phone, following your Google backup settings. Stack Trace Studios runs no server for this app and builds in no analytics or advertising SDK.

Support: https://stacktrace-studios.com/support/codon/android/
Privacy policy: https://stacktrace-studios.com/privacy/codon/android/