# Lytes

> Medical app for quick electrolyte disorder information, diagnosis, and treatment. (iPhone/iPad app by Free Radical Software.)

- Source: https://appshunter.io/ios/app/lytes/id304747245 (this page in markdown: same URL + `.md`)
- Developer: [Free Radical Software](https://appshunter.io/developer/300521249)
- Category: Medical, Health & Fitness
- Price: $2.99
- Rating: 4.80/5 from 10 App Store ratings · 12 written reviews indexed
- Age rating: 17+
- Requires: iOS 14.1 · 1 MB
- Languages: American English
- Released: 2009-02-13
- Data updated: 2026-08-19
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/lytes/id304747245/reviews.md

## What is Lytes?

Ah, electrolytes...

They always seem to be too high or too low.  But it's your job to get them back in line.

Enter Lytes, the program that provides quick, at-your-fingertips information about the causes, symptoms, diagnosis, and treatment of electrolyte disorders.  Our Lytes Selection Dial lets you drill down to the info you need within seconds.

Features:
• See causes, signs, diagnosis, and treatment with a flick of the thumb
• Intuitive single screen interface keeps things straighforward
• 50 pages of practical info for the wards
• Lytes remembers where you left off when you return
• All disorders provided with a reference section with links to PubMed



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If you like the program please rate it. If you have any concerns or find any bugs please contact us at support@freeradicalsoft.com

DISCLAIMER: Please consider that information provided by this program is intended to supplement but not substitute for the expertise and clinical judgment of a healthcare professional. The educational material is provided as is, and Free Radical does not warrant that it is accurate or up to date, although that is certainly our goal.

## Key features

- Causes, signs, diagnosis, and treatment of electrolyte disorders
- Intuitive single-screen interface
- 50 pages of practical medical information
- Resume reading where you left off
- PubMed reference links

## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/lytes/id304747245/reviews.md

### 5/5 — ICU RN

*2025-02-01*

Excellent app

### 4/5 — Bom

*2011-08-30*

Simples, objetivo

### 2/5 — That's it??

*2010-08-13*

You should already have these basics memorized if not now then at least after glancing at this app a few times. 
I'm disappointed.

### 4/5 — Bom App!!

*2010-01-17*

Bom custo benefício. 
Atráves desta calculadora vc tem sinais/sintomas, causas, como diagnosticar e tratar os disturbios hidroeletroliticos.
Vale a pena.

### 5/5 — Good

*2009-08-18*

As killercarrot wrote, this app is a little light on some of the details and has a few errors. The user interface and concept of the app are excellent however! I also think MedRef is great for normal lab values to use in conjunction with this app.

### 4/5 — Nice program

*2009-07-25*

This nice little program helps you deal with lyte disorders. But unfortunately, there is no pediatric information: no specific etiologies, no specific lab values, and no specific treatments nor pediatric doses...

### 4/5 — Emergency.Consultant

*2009-07-16*

This is a great application.  It is simple, easy to use, and provides you with the data you need.  I can't wait for.the update!

### 5/5 — Fantastic!

*2009-04-23*

No searching textbooks or asking questions that make doctors roll their eyes at you :) This is a brilliant app for nurses who get a bit rusty on electrolytes.

### 1/5 — Looks good, but VERY lite on info

*2009-02-26*

For the price, this app is very much a disapointment. Not much more than a list of normal lab values. In the case of hyponatremia, suggested tretment do not reflect Verbalis guidelines (where are the vaptans?). It could be a very good app if expaneded with TX detail. . At this point save your money go with a cheaper simple lab value app like MesRef

### 3/5 — 期待を込めて星３つ

*2009-02-17*

発想はいいですが、情報がpoorです。これぐらいなら、そこらへんの本を開いた方が早いし、情報量も多いのでは。
ソフトとしては面白いので、今後の改善に期待大です。

## Frequently asked questions about Lytes

### What is Lytes?

Lytes is a medical reference application designed to provide quick, accessible information on the causes, symptoms, diagnosis, and treatment of electrolyte disorders. It features an intuitive interface for rapid access to practical medical knowledge.

### How much does Lytes cost?

Lytes is a paid application, available for $2.99. This one-time purchase grants you access to all its features and information.

### What devices is Lytes compatible with?

Lytes is designed for iOS devices, including iPhone, iPad, and iPod. It requires iOS 17+ for the latest version.

### How often is Lytes updated?

The latest version of Lytes is 3.0, last updated on May 1, 2022. While updates have not been frequent recently, the app provides a stable set of information.

### Does Lytes have ads?

No, Lytes does not contain advertisements. As a paid application, it offers an ad-free experience for users.

### What is the age rating for Lytes?

Lytes has an age rating of 17+, indicating it is intended for mature users due to the nature of the medical content.

### Can I get Lytes for Android?

Currently, Lytes is only available for iOS devices, including iPhone, iPad, and iPod. There is no Android version listed.

### Where can I find references for the information in Lytes?

Lytes includes a reference section for all disorders, with direct links to PubMed. This allows users to explore the scientific literature supporting the provided information.

## Version history (last 5 releases)

### 3.0 — 2022-05-01

We're excited to bring you an all new, rebuilt from the ground up, modern version of Lytes.

- Modern interface with new updates rolling out
- All the same great data, now updated and expanded
- Will be adding Clinical calculators for even more usefulness on rounds with future updates

### 2.0 — 2014-11-27

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

• Rebuilt from the ground up for fast, easy use
• Completely updated modern interface now includes auto hide/show of the Lytes Selection Dial
• Now you can also swipe between details of each electrolyte
• Reference links take you directly to PubMed for deeper study

### 1.4 — 2009-08-14

• Updated HyperCalcemia:
-- Diagnostic approach streamlined
-- Treatments sequenced in algorithmic approach
-- More drugs and dosages added
-- Added calcium correction formula using albumin

### 1.3 — 2009-08-03

• Updated Hyperkalemia:
 - Added doses to medications
 - Standardized existing dosing units and concentrations of medications and fluids
 - Corrected error in treatment via membrane stabilization

### 1.2 — 2009-07-15

• Now iPhone OS 2.2 and 3.0 compatible
• Hypernatremia updated and now includes:
  - Step-by-step guide for free water deficit replacement
  - Use of the Adrogue equation to determine infusion rate of various fluids
  - Table of replacement fluid osmolality
  - Improved formatting of causes
  - Improved workflow for diagnosis

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## More apps by Free Radical Software

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All apps by Free Radical Software: https://appshunter.io/developer/300521249

## Related topics

[sweatsmart electrolytes](https://appshunter.io/ios/topics/sweatsmart-electrolytes) · [electrolyte equilibria](https://appshunter.io/ios/topics/electrolyte-equilibria) · [electrolytes emergencies](https://appshunter.io/ios/topics/electrolytes-emergencies)

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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 2026-08-19.*