Comparison

Physiology Solution vs Codon One

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

Head to head
About

Physiology Solution

Explore comprehensive information on human physiology, drawing from established medical texts. This educational tool provides key concepts and figures for learning purposes.

Highlights
  • Human physiology content
  • Based on Guyton and Ganong
  • Educational figures and text
  • Comprehensive information
Features
Read full description

Everything about Human Physiology Disclaimer: Concepts are mainly based on Guyton and Ganong. Some figures and text parts are also used from these books only for educational purpose.

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.

Screenshots

Physiology Solution3 screens
Codon One4 screens

Verdict

The call

The clearest difference is rating: Codon One at 4.5 against Physiology Solution's 3.8. Codon One also leads on update cadence (every 3 weeks vs every 7 months) and review sentiment (76% vs 67%). Physiology Solution's advantage is in-app purchases (none vs 7) and iOS requirement (11.0 vs 15.6). On price, ads and device support 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. Physiology Solution asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Codon One holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 5 and 24 respectively. Written reviews point the same way: 67% of Physiology Solution's written reviews are positive against 76% of Codon One's.

UpkeepUpdate frequency

Physiology Solution ships an update every 7 months, Codon One every 3 weeks. The most recent releases landed on September 24, 2026 and October 10, 2026 respectively.

Scorecard7 real differences · 3 level
Physiology Solution versus Codon One: the parameters behind the verdict, then further details
ParameterPhysiology SolutionCodon One
PriceFreeFree
Rating3.8 (5 ratings)4.5 (24 ratings) — better
Positive reviews66.7% of reviews76.5% of reviews — better
Number of ratings524 — better
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.6
Further details — not scored
Size3 MB277 MB
Age rating12+4+
DeveloperQuantum Quasar Infoworld LLPDaniel Gebert

Customer experience

Physiology Solution

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

Codon One

All ratings24 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews17 reviews
Positive76.5%
Neutral0.0%
Negative23.5%

In-app purchases

None

Physiology Solution

No 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

Questions

Is Physiology Solution free?
Physiology Solution is free to download, with no in-app purchases.
Is Codon One free?
Codon One is free to download, with in-app purchases available.
Which has better reviews, Physiology Solution or Codon One?
Codon One is rated higher. Physiology Solution averages 3.8 out of 5 from 5 ratings, while Codon One averages 4.5 from 24 ratings.
Do Physiology Solution or Codon One have ads?
Neither Physiology Solution nor Codon One shows ads.
Which is updated more often, Physiology Solution or Codon One?
Physiology Solution ships an update every 7 months, and Codon One every 3 weeks. Most recently, Physiology Solution was updated on September 24, 2026 and Codon One on October 10, 2026.

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