Codon One vs Human Cells..
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Codon One
Master molecular biology, genetics, evolution, and life chemistry through interactive modules and quizzes. Explore essential concepts with clear diagrams and concise explanations. Includes helpful tools for sequence analysis and genetic code reference.
- Interactive learning modules
- Quick quizzes for comprehension
- Clear diagrams and plain language
- Molecule reference guide
- Sequence analysis tools
- Genetic code exploration
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Make complex biology click, and make it stick. Short, illustrated lessons explain one idea at a time, a quick quiz shows you what you've understood, and flashcards bring back what you'd otherwise forget. Module 1 is free, with no account and no subscription. Understand it, one step at a time Each section breaks complex ideas into clear explanations and diagrams, so you can follow even the hard topics. A quiz before you move on shows you where you stand. Lessons, quizzes, flashcards and the glossary all work offline, so you can study anywhere. Stuck? Ask Ribo, your AI study helper You don't have to search the web or wait for the next class. Ribo answers questions about the lesson page, glossary entry or missed quiz question in front of you. A few questions are free every day, and purchased modules give you more. Answers can be wrong, so check them against the lesson. Turn your lecture slides into flashcards Exam coming up? Photograph your slides or import the lecture PDF, and the glossary terms in them become flashcards. Swipe through the pages, zoom in and tap a term to read its entry. It all happens on your device, so your slides stay with you. Keep what you've learned Turn any topic into a flashcard deck: spaced practice brings back what you'd otherwise forget and focuses on the cards you find hardest. The Review tab shows you what to do today: the cards that are due, the quiz questions worth another look, your streak and your progress. Forgot a term? The glossary has the key terms from every module, plus the 20 amino acids and the nucleobases. What you'll learn Module 1: Chemistry of Life – atoms & elements, bonds, water, pH, biomolecules Module 2: Genetics – chromosomes, replication, transcription, translation, regulation Module 3: Evolution – history of life, phylogeny, selection, drift, speciation, molecular evolution Module 4: History of Science – ideas, methods, and experiments that shaped modern biology Module 5: Cell Biology – membranes & transport, organelles & energy, cytoskeleton, signaling, cell division Module 6: Development – fertilization & body plans, differentiation, pattern formation & morphogenesis, growth & repair, evo-devo Additional topics are planned for future updates, including Animal Physiology, Microbiology & Immunology, Plant Biology, and more. Pay once, no subscription Module 1 is free. Buy only the modules you need, or all of them with Unlock All, which also includes future modules. No subscription and no expiry. Also included: Sequence Operator, Codon Picker and Triplet Encoder, for working with DNA sequences and the genetic code. Created by expert biologists. Found a bug or have suggestions? Email info@codon-one.com — we read every message.
Human Cells..
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Learn about human body cells, their structure, and biological functions. Human Cells Guide is an offline reference designed to help users explore the structure, functions, and characteristics of different human cell types. Discover organized information about cell anatomy, biological roles, and how specialized cells contribute to human body systems. The app provides clear explanations and visual references to support learning in biology, anatomy, and medical education. Cell Information • Name and classification of each cell type • Cell structure and main organelles • Shape, size, and distinguishing features • Key biological functions • Typical locations in the human body • Cell origins and related tissues Cell Structure and Function • Understand how different cells work • Learn the role of cells in body systems • Explore specialized cells and their functions • Review important biological markers Images and Visual Learning • High-quality cell illustrations • Visual support for anatomy and histology study • Clear reference images for learning Search and Navigation • Fast search for cell types • Organized categories for easier browsing • Quick access to important cell information Learning Tools • Quiz mode to test your knowledge • Educational facts about human cells • Structured content designed for easier study Favorites • Save important cell types • Quickly access frequently studied cells Designed for Study and Reference • Clean and simple interface • Works fully offline • Fast navigation through cell entries Privacy Focused • No unnecessary permissions • No personal data collection • All information remains on your device Who This App Is For • Medical students • Biology students • Doctors and healthcare professionals • Researchers and educators • Anyone interested in human biology Human Cells Guide helps you explore human cell types, understand their structure and functions, and study the essential building blocks of life. Download Human Cells Guide to explore human body cells anytime. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Codon One at none against Human Cells..'s shown. Human Cells..'s advantage is update cadence (weekly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Codon One sells 7 one-off in-app purchases and Human Cells.. sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Codon One ships an update monthly, Human Cells.. weekly. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.
| Parameter | Codon One | Human Cells.. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (25 ratings) — better | — |
| Positive reviews | 76.5% of reviews | — |
| Number of ratings | 25 — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 269 MB | 174 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Gebert | Olga Ivanova |
In-app purchases
Codon One
- Module 1: Chemistry of LifeFree
- Module 2: Genetics$2.99
- Module 3: Evolution$2.99
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- Module 4: Science History$2.99
- Module 5: Cell Biology$2.99
- Module 6: Development$2.99
- Unlock All$8.99
Human Cells..
- subscription$1.991 Month
- sponsorship$1.99
Questions
Is Codon One free?
Is Human Cells.. free?
Do Codon One or Human Cells.. have ads?
Which is updated more often, Codon One or Human Cells..?
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