Comparison

Codon One vs Embryonic Virtual Heart

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

Embryonic Virtual Heart

Features
Read full description

This application is designed to provide a user-friendly way for students of cardiac embryology to interact with a 3D virtual embryonic heart. The application is a free, educational learning module that addresses the complexity of heart formation. The user will begin with an instructional video informing them how to use the application. They will then progress through a series of scenes that will facilitate their learning. The user will begin with a brief overview of heart anatomy, then they will be able to interact with the embryonic heart models. There are five heart models. The first allows the user to learn about normal embryonic development focused on the conotruncal septation event. The next four models address issues that arise when the conotruncal septation event goes awry, resulting in four congenital cardiac defects. The defects discussed in this application are Tetrology of Fallot, Transposition of the Great Vessels, Membranous Interventricular Septum Defects, and Truncus Arteriosus. Learning objectives are also included. *Disclaimer: This application is intended purely for educational purposes and should not be used for any clinical diagnoses, treatments, or any other medical or healthcare related purposes.* The educational content of this application has been reviewed and approved by Dr. Lisa Lee, PhD, Associate Professor at the University of Colorado, School of Medicine, Department of Cell and Developmental Biology.

Screenshots

Codon One4 screens
Embryonic Virtual Heart1 screens

Verdict

The call

The clearest difference is in-app purchases: Embryonic Virtual Heart at none against Codon One's 7. Codon One's advantage is update cadence (every 3 weeks vs every 53 months). On price, 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. Embryonic Virtual Heart asks for nothing beyond the download.

UpkeepUpdate frequency

Codon One ships an update every 3 weeks, Embryonic Virtual Heart every 53 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Codon One versus Embryonic Virtual Heart: the parameters behind the verdict, then further details
ParameterCodon OneEmbryonic Virtual Heart
PriceFreeFree
Rating4.5 (25 ratings) — better—
Positive reviews76.5% of reviews—
Number of ratings25 — better—
Update frequencyEvery 3 weeks — betterEvery 53 months
AdsNo—
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size277 MB259 MB
Age rating4+17+
DeveloperDaniel GebertNicholas Gustilo

In-app purchases

7 purchases

Codon One

One-time7
  • Module 2: GeneticsFree
  • Module 1: Chemistry of LifeFree
  • 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
None

Embryonic Virtual Heart

No in-app purchases

Questions

Is Codon One free?
Codon One is free to download, with in-app purchases available.
Is Embryonic Virtual Heart free?
Embryonic Virtual Heart is free to download, with no in-app purchases.
Which is updated more often, Codon One or Embryonic Virtual Heart?
Codon One ships an update every 3 weeks, and Embryonic Virtual Heart every 53 months. Most recently, Codon One was updated on October 29, 2026 and Embryonic Virtual Heart on October 27, 2026.

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