Codon One vs Khedawy
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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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.
Khedawy
This educational app offers comprehensive and modern explanations for all aspects of secondary school material. It utilizes various teaching methods including videos, PDFs, interactive Q&A, multiple-choice quizzes, and comprehensive reviews to enhance understanding and application.
- Video lessons
- PDF explanations
- Interactive Q&A
- Multiple-choice quizzes
- Comprehensive reviews
- Lesson schedules and promos
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تطبيق تعليمي بيقدم شرح وافي وملم بكل جوانب المادة لجميع صفوف المرحلة الثانوية بشكل مطور وحديث . نظام الشرح يعتمد على العديد من الوسائل التعليمية المختلفة (ڤيدو شرح الحصة + الpdf الخاص بالشرح +إمكانية اضافة اسئلة في حالة عدم فهم او استيعاب جزء معين ويتم الرد علي سؤالك بالتوضيح -أختبار علي كل جزء بنظام اسئلة الاختيار من متعدد- مذكرات ومراجعات-صور ومقاطع توضيحية-إختبارات شاملة). مع الخديوي هتفهم وتحل وتطبق علي كل حصة . جزء الاخبار هينزلك مواعيد الحصص والبرومو الخاص بكل حصة . وهناك العديد من المزايا الاخري التي نعمل عليها حاليًا وستأتي في تحديث قريب. هذه فرصتك للتعلم وتحسين مستواك في المادة بشكل سريع -قم بالتحميل الآن -ننتظرك في اول درس.
Screenshots
Verdict
The clearest difference is rating: Khedawy at 5.0 against Codon One's 4.5. Khedawy also leads on in-app purchases (none vs 7) and iOS requirement (13.0 vs 15.6). Codon One's advantage is ratings volume (25 vs 1) and update cadence (every 3 weeks vs every 2 months). 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
Both are free to download. Codon One sells 7 one-off in-app purchases. Khedawy asks for nothing beyond the download.
Khedawy holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Codon One has 25 ratings behind it against 1, so its average is the more settled of the two.
Codon One ships an update every 3 weeks, Khedawy every 2 months. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.
| Parameter | Codon One | Khedawy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (25 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.5% of reviews | — |
| Number of ratings | 25 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 277 MB | 77 MB |
| Age rating | 4+ | 17+ |
| Developer | Daniel Gebert | mohamed yousef |
Customer experience
Codon One
Khedawy
In-app purchases
Codon One
- Module 2: GeneticsFree
- Module 1: Chemistry of LifeFree
- 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
Khedawy
No in-app purchases
Questions
Is Codon One free?
Is Khedawy free?
Which has better reviews, Codon One or Khedawy?
Do Codon One or Khedawy have ads?
Which is updated more often, Codon One or Khedawy?
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