Comparison

Codon One vs Human Cells..

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Interactive learning modules
  • Quick quizzes for comprehension
  • Clear diagrams and plain language
  • Molecule reference guide
  • Sequence analysis tools
  • Genetic code exploration
Features
Read full description

Codon One helps you learn biology step by step, with short lessons, quick quizzes, flashcards, and a searchable glossary. Build a solid foundation in molecular biology, genetics, evolution, cell biology, development, and the history of science. Each section breaks complex ideas into clear explanations, diagrams, and focused checks for understanding. Core course (Modules) 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. Glossary & Flashcards Look up the essentials in one place - key terms from every module, plus the 20 amino acids and the nucleobases. Turn any topic into a flashcard deck and review with smart, spaced practice that focuses on the cards you find hardest. Quiz & Progress Practice across biochemistry, genetics, evolution, cell biology, development, and science history in a dedicated quiz area. Track improvement with success rates and per-topic stats, and let the app resurface your weak questions for targeted review. Keep a daily streak going to build a steady habit. Got a good question? Submit it directly from the app. Built-in Tools Sequence Operator: paste DNA, reverse or complement it, transcribe to RNA, translate in all six reading frames, and view length, GC content, and melting temperature. Codon Picker: explore the genetic code, see which codons map to each amino acid or stop signal, and tweak bases to see the effect. Triplet Encoder: write a message in amino-acid single-letter code and encode it as a DNA triplet sequence, then decode it by translation. Found a bug or have suggestions? Email info@codon-one.com - we read every message.

About

Human Cells..

Features
Read full description

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

Codon One4 screens
Human Cells..4 screens

Verdict

The call

The clearest difference is ads: Codon One at none against Human Cells..'s shown. Human Cells..'s advantage is update cadence (weekly vs every 3 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Codon One ships an update every 3 weeks, Human Cells.. weekly. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 8 level
Codon One versus Human Cells..: the parameters behind the verdict, then further details
ParameterCodon OneHuman Cells..
PriceFreeFree
Rating4.5 (24 ratings) — better—
Positive reviews76.5% of reviews—
Number of ratings24 — better—
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size277 MB174 MB
Age rating4+4+
DeveloperDaniel GebertOlga Ivanova

In-app purchases

7 purchases

Codon One

One-time7
  • Module 1: Chemistry of LifeFree
  • Module 2: Genetics$2.99
  • Module 3: Evolution$2.99
Show 4 more
  • Module 4: Science History$2.99
  • Module 5: Cell Biology$2.99
  • Module 6: Development$2.99
  • Unlock All$8.99
2 purchases

Human Cells..

Subscriptions1
  • subscription$1.991 Month
One-time1
  • sponsorship$1.99

Questions

Is Codon One free?
Codon One is free to download, with in-app purchases available.
Is Human Cells.. free?
Human Cells.. is free to download, with in-app purchases available.
Do Codon One or Human Cells.. have ads?
Human Cells.. shows ads; Codon One does not.
Which is updated more often, Codon One or Human Cells..?
Codon One ships an update every 3 weeks, and Human Cells.. weekly. Most recently, Codon One was updated on October 10, 2026 and Human Cells.. on October 14, 2026.

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