# Genetic Code

> Visual genetic code reference with detailed amino acid information. (iPhone/iPad app by SlaVanya LLC.)

- Source: https://appshunter.io/ios/app/genetic-code/id346512503 (this page in markdown: same URL + `.md`)
- Developer: [SlaVanya LLC](https://appshunter.io/developer/425987343)
- Category: Education, Reference
- Price: Free
- Rating: 4.00/5 from 6 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 8 MB
- Languages: American English
- Released: 2009-12-19
- Data updated: 2026-07-16
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/genetic-code/id346512503/reviews.md

## What is Genetic Code?

GeneticCode is a handy reference tool for students and researches. The application visualizes standard genetic code as well as provides information about 20 amino acids and their abbreviations.

The codon table is represented in four different ways:
* Codon Picker -- allows you to select a particular codon to see the name and structure of the corresponding amino acid. You can see amino acid properties by clicking on the amino acid structure.
* Codon Table -- table representation of the codon table
* Codon Circle -- circular representation of the codon table (a little bit unusual, but pretty)
* Codon Alignment -- contains additional information about initiation (start) codons


===


Following information about each amino acid is provided:
* Chemical structure
* Three letter and one letter abbreviations
* All codons that encode the amino acid
* Polarity
* Side chain charge (neutral, positive, negative)
* pH (acidic or basic)
* Chemical formula of the side chain
* Aromatic or aliphatic
* Essential
* Small
* Polar
* Hydrophobic
* Hydropathy
* Molecular weight (MW)
* Isoelectric Point (pI)
* pK1 (-COOH)
* pK2 (+NH3)
* pKa
* reference to Wikipedia


====


"Amino Acid and Nucleotide Codes" reference tool contains 26 amino acid and 16 nucleotide codes (abbreviations). This includes the following non-standard/degenerate codes:
R       Purine (A or G)
Y       Pyrimidine (C or T)
N       Any nucleotide
W       Weak (A or T)
S       Strong (G or C)
M       Amino (A or C)
K       Keto (G or T)
B       Not A (G or C or T)
H       Not G (A or C or T)
D       Not C (A or G or T)
V       Not T (A or G or C)

Asx     B       Asn or Asp
Glx     Z       Gln or Glu
Xle     J       Leu or Ile
Sec     U       Selenocysteine (UGA)
Pyl     O       Pyrrolysine (UAG)
Unk     X       Unknown


====


Amino Acid Venn Diagram shows classification of all amino acids by physical/chemical properties on a single picture.

## Key features

- Visual codon table
- Amino acid properties
- Codon picker tool
- Circular codon representation
- Alignment with start codons
- Nucleotide code reference

## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/genetic-code/id346512503/reviews.md

### 2/5 — Used to be a really handy tool

*2024-11-27, version 1.5*

This app was incredibly useful for work BUT it no longer works on my phone 
Maybe the iOS was updated to something that stopped it working? 🤷🏻

### 1/5 — Necesita actualizar

*2024-10-04, version 1.5*

No funciona con las nuevas versiones ios

### 4/5 — Cool app

*2016-01-09, version 1.4*

This is really helpful for my biology class but it would be better if there was an updated version that can fit the iPhone 6 screen please!

### 5/5 — Excellent, quick tool!

*2014-01-10, version 1.4*

I have been using this app in my class for years (I’m a professor of biology).  I hook my iPhone up to the video projector and show my students the connection of the codons to the structures of the amino acids.  It’s easy to use and provides for good discussion.  I also love that it has a codon table AND a codon wheel.  Most of my students are familiar with the codon table and prefer it to the wheel, but after the demonstration many can see how the wheel is faster to use.

Once we figure out the NAMES of the amino acids for each codon, the codon picker lets me show what the side-chains of the amino acids are.  This is rather striking for the students.

I’ll certainly give this five stars for the price.  I haven’t had need of the “Pro” version (Sorry, Ivan!) and haven’t taken the time to look at it.  If the Pro had a 3-D rotating rendering of amino acids, I’d be all over it!

Nice, solid app.  Thanks!

### 4/5 — Never use a textbook again

*2012-09-12*

I use this app for checking the consequences of DNA mutation in human disease. The codon picker is the perfect tool for that. Thanks for creating this app.

### 1/5 — Solid one star

*2012-06-01, version 1.4*

Minimum information and Useless.

### 4/5 — Bien

*2011-06-17, version 1.4*

Bastante completo.Recomendable.

### 4/5 — Simple and useful.

*2010-04-04, version 0*

The interface is simple and self-explaining, and you will never wonder how to use this app.

### 3/5 — Thanks from an OSU Buckeye

*2010-04-02, version 0*

Really pleased with this app! Just starting biochem and need to memorize structures! Thanks!

### 3/5 — Bad update

*2010-03-07, version 0*

The previous version was better then the recent update. Looks too plain

## Frequently asked questions about Genetic Code

### What is Genetic Code?

Genetic Code is a reference tool that visualizes the standard genetic code and provides detailed information about 20 amino acids and their abbreviations. It's designed for students and researchers.

### How does Genetic Code display the codon table?

Genetic Code offers four ways to view the codon table: a Codon Picker for selecting specific codons, a standard table, a circular representation, and an alignment view with initiation codons.

### What information is available for each amino acid in Genetic Code?

For each amino acid, Genetic Code provides its chemical structure, abbreviations, encoding codons, polarity, side chain charge, pH, chemical formula, aromaticity, essentiality, and more, including a Wikipedia reference.

### Does Genetic Code include non-standard amino acid and nucleotide codes?

Yes, Genetic Code includes 26 amino acid and 16 nucleotide codes, covering non-standard and degenerate codes like R, Y, N, B, H, D, V, Asx, Glx, Xle, Sec, Pyl, and Unk.

### What are the supported devices for Genetic Code?

Genetic Code is available on iPhone, iPad, and iPod, making it accessible across various Apple devices.

### How often is Genetic Code updated?

The app was last updated on December 20, 2016, with its latest version being 1.5. This indicates a stable, though not frequently updated, release history.

### What is the age rating for Genetic Code?

Genetic Code has an age rating of 4+, making it suitable for a wide range of users, including younger students.

### What is the user sentiment for Genetic Code?

Based on the provided data, Genetic Code has a rating of 4.0 stars from 6 ratings, suggesting generally positive user feedback.

## Version history (last 5 releases)

### 1.5 — 2016-12-20

This app has been updated by Apple to display the Apple Watch app icon.

* the app was updated to handle larger screen sizes

### 1.4 — 2010-12-21

* Amino Acid Venn Diagram has been added

### 1.3 — 2010-03-17

== What's new ==
* "Amino Acid and Nucleotide Codes" reference is added with 26 amino acid and 16 nucleotide codes (abbreviations). This includes the following non-standard/degenerate codes:
R       Purine (A or G)
Y       Pyrimidine (C or T)
N       Any nucleotide
W       Weak (A or T)
S       Strong (G or C)
M       Amino (A or C)
K       Keto (G or T)
B       Not A (G or C or T)
H       Not G (A or C or T)
D       Not C (A or G or T)
V       Not T (A or G or C)

Asx     B       Asn or Asp
Glx     Z       Gln or Glu
Xle     J       Leu or Ile
Sec     U       Selenocysteine (UGA)
Pyl     O       Pyrrolysine (UAG)
Unk     X       Unknown

* "Codon alignment" view of the genetic code is added -- it contains information about initiation (start) codons
* Application automatically opens the screen that was active last time the application was used.
* Bugs fixed:
    - A structure of the Aspartic Acid corrected

### 1.2 — 2010-03-03

* Reference to Wikipedia added for each Amino Acid
* App design changed -- Home view added instead of tab bar

### 1.1 — 2010-02-10

* Tab names changed
* Ads to the Pro version is added replacing the info tab

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All apps by SlaVanya LLC: https://appshunter.io/developer/425987343

## Related topics

[genetic code](https://appshunter.io/ios/topics/genetic-code) · [biocoded](https://appshunter.io/ios/topics/biocoded)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-16.*