Comparison

Codon One vs 4択ITパスポート

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

4択ITパスポート

Features
Read full description

こんにちは、理科子です! 「Rikako IT」は、ITパスポート試験の合格を、すきま時間でめざせる4択問題集アプリです。 通勤・通学のちょっとした時間や、寝る前の数分。1問ずつコツコツ解いていくうちに、いつの間にか力がついていきます。わたしと一緒に、合格まで進んでいきましょう! ■ こんな方におすすめです ・これからITパスポートの勉強を始める方 ・すきま時間で効率よく対策したい方 ・参考書だと続かなかった方 ■ 特長 ・4択形式でサクサク解ける問題集 ・一問ごとにわかりやすい解説つき ・分野(ストラテジ/マネジメント/テクノロジ)から選んで学習 ・わからないところはAIに質問できる ・学習の記録が残るので、続けるほど手ごたえを実感 むずかしく考えなくて大丈夫です。まずは1問、気軽に解いてみてください。 あなたの「合格したい」を、理科子が応援します!

Screenshots

Codon One4 screens
4択ITパスポート3 screens

Verdict

The call

The clearest difference is in-app purchases: 4択ITパスポート at none against Codon One's 7. Codon One's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence and ads 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. 4択ITパスポート asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 7 level
Codon One versus 4択ITパスポート: the parameters behind the verdict, then further details
ParameterCodon One4択ITパスポート
PriceFreeFree
Rating4.5 (24 ratings) — better—
Positive reviews76.5% of reviews—
Number of ratings24 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size277 MB6 MB
Age rating4+4+
DeveloperDaniel Gebertjunpei ono

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
None

4択ITパスポート

No in-app purchases

Questions

Is Codon One free?
Codon One is free to download, with in-app purchases available.
Is 4択ITパスポート free?
4択ITパスポート is free to download, with no in-app purchases.
Do Codon One or 4択ITパスポート have ads?
Neither Codon One nor 4択ITパスポート shows ads.
Which is updated more often, Codon One or 4択ITパスポート?
Codon One ships an update every 3 weeks, and 4択ITパスポート every 3 weeks. Most recently, Codon One was updated on October 10, 2026 and 4択ITパスポート on October 4, 2026.

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