# Amino Acid Guide

> Education

Canonical page: [https://chrome-stats.com/d/id957165646](https://chrome-stats.com/d/id957165646)

## Overview

- **ID:** `id957165646`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Axton Pitt
- **Category:** Education
- **Rating:** 3.60 / 5 (14 ratings)
- **Version:** 1.6.1
- **Last updated:** 2019-03-17
- **First published:** 2015-01-24
- **Size:** 83 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/amino-acid-guide/id957165646)
- **Website:** [http://www.axtonpitt.com/amino-acid-guide](http://www.axtonpitt.com/amino-acid-guide)
- **Privacy policy:** [https://www.axtonpitt.com/amino-acid-guide/privacy-policy](https://www.axtonpitt.com/amino-acid-guide/privacy-policy)

## Description

Learn, Quiz, Repeat.
- This is a great tool if you are just starting out and need to learn about amino acids, or if you have lots of experience and want a handy reference with you wherever you go.

Learn:
- Browse through each amino acid and learn about its specific properties. Use the provided diagrams to learn the functional group structure of all 20 amino acids. 
- There are many data points available from Codons and Polarity, to Molar Mass and Density.
- 3D animated Ball and Stick, and Space Filling models; 2D Structure, Simplified and Functional Group images, help you learn the chemical structure of each amino acid.

Quiz:
- Test what you have learnt wherever you are.
- 8 quiz types (more coming): 2D structure, Functional group, Three letter code, Single letter code, Polarity, Essential, Simplified structure and Everything.
- Includes a free set of questions, then an In-App Purchase unlocks unlimited questions.

iPad:
- Multitask! Take advantage of slide-over and split-view multitasking on compatible iPad models.
- This lets you look at your notes from class while you quiz your knowledge.

Apple Watch:
- Learn everything about amino acids, right on your wrist.
- Daily Amino Acid, a fun Glance to see a new amino acid every day and keep you motivated to learn.

Follow us on Twitter at @aminoacidguide or facebook.com/aminoacidguide for updates.

## Rankings

- #317,563 — Overall

## Review summary

Reviews highlight a comprehensive, easy-to-use AA guide with useful quizzes and study value, especially for MCAT prep. However, stability problems (crashes, launch failures) and a quiz navigation bug disrupt usage. Users also request features like language switching. The app's strengths lie in its thorough data presentation and accessible interface, while reliability and UX issues are the main drawbacks.

### Pros

- Comprehensive and thorough amino acid information (polarity, acidity, pKa, structures, codes, essential status, and codons)
- Easy to use and accessible with quick access to AA properties
- Visually appealing design and clear, well-presented information
- Good quiz functionality for self-testing and review
- Helpful for MCAT prep and efficient learning

### Cons

- Stability issues: app crashes and won't launch
- Quiz navigation/UX bugs (mid-quiz behavior and multi-pane left-right issue)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id957165646)