# WarfarinGuide

> Evidence-based Warfarin anticoagulation guidelines and protocols for clinicians. (iPhone/iPad app by Joshua D. steinberg.)

- Source: https://appshunter.io/ios/app/warfaringuide/id403959804 (this page in markdown: same URL + `.md`)
- Developer: [Joshua D. steinberg](https://appshunter.io/developer/374154837)
- Category: Medical
- Price: Free
- Rating: 3.80/5 from 5 App Store ratings · 10 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 1 MB
- Languages: American English
- Released: 2010-11-20
- Data updated: 2026-07-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/warfaringuide/id403959804/reviews.md

## What is WarfarinGuide?

Warfarin Guide offers three resources essential for systematic and careful evidence-based anticoagulation with Warfarin.  First it reviews recommendations on indications, INR targets, and treatment duration from the American College of Chest Physicians 8th Edition guidelines on Antithrombotic and Thrombolytic Therapy from 2008, updated for the 2012 guideline.  Second it offers a protocol for Warfarin dose adjustment depending upon INR result.  And third is a discussion of protocols for the initiation of Warfarin.  These resources come from point of care guides on these topics in the family medicine literature as well as the 2012 ACCP guideline.  The app also offers guidance for management of peri-operative Warfarin by directing the user to oexcellent comprehensive resources for managing all anticoagulants and antiplatelet agents around surgery.

The app addresses such common questions as: 

•which artificial heart valves require that higher level of anticoagulation? 
•how do I respond to an INR of 7.4? 
•this pt needs Warfarin, how do I get it started? 
•I'm adjusting the total weekly warfarin dose down by 5%, when should I recheck the INR? 
•when do I give Vitamin K to reverse Warfarin anticoagulation and at what dose??

This app is written and intended for practicing clinicians involved in Warfarin anticoagulation such as internists, cardiologists, family physicians, nurses, pharmacists, PA's and NP's; for resident physician trainees; and for medical students.  As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool.

## Key features

- Warfarin dose adjustment protocols
- Warfarin initiation protocols
- INR target guidelines
- Peri-operative Warfarin management
- ACCP guideline references
- Point of care guides

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/warfaringuide/id403959804/reviews.md

### 5/5 — Solid

*2024-07-06*

Hey Josh, have you considered adding suggested dosing? There’s an old warfarin app (warfarin htk) for Android that would just 5mg MWF, 7.5mg TTh. Was really helpful for dosing quickly. Thanks!

### 2/5 — Nope.

*2018-04-28*

I guess I should have looked into it a bit more before getting app. All very easily found information. INR range for Mechanical Mitral Valve is incorrect. It changed from 2.5-3.5 to 3.0-3.5 in early 2014, or before. Working off the incorrect range, when looking at adjusting the dosage, it suggests a 5% - 10% dosage increase if my INR is as low as 1.5! That makes no sense.

### 5/5 — Great app! All docs should have

*2016-07-21*

Provides references to national guidelines/recs and easy to use.

### 4/5 — Nice

*2014-01-01*

Thank u! It was helpful

### 5/5 — Excellent in its simplicity

*2012-12-23*

Gives same advice as my GP

### 5/5 — Helpful app for Managing Coumadin in clinic!

*2012-11-20*

Excellent app

### 4/5 — 🐡

*2012-10-03*

👍👍👍

### 5/5 — Dr. Steinberg does it again

*2012-08-22*

Another fabulous reference app! I also use his apps for ABGs and pneumonia. Very quick, to the point app. All of his apps compliment my critical thinking skills as I work towards my Nurse Practitioner certification. I would love to see a heparin app as well.

### 5/5 — Great reference.

*2012-05-29*

I have a mechanical mitral valve and this is a nice reference for understanding warfarin doses with an ever changing INR. Thanks for the effort.

### 4/5 — Very nice and simple!

*2010-11-20*

Very nice and simple! I can't wait to use this in my job. This has always been a subject that I struggle with, so I am grateful to have a FREE program that I can use to help!

## Frequently asked questions about WarfarinGuide

### What medical guidelines does WarfarinGuide use?

WarfarinGuide references the American College of Chest Physicians (ACCP) 8th Edition guidelines on Antithrombotic and Thrombolytic Therapy, updated for the 2012 guideline. It also draws from point-of-care guides in family medicine literature.

### Can WarfarinGuide help with starting Warfarin?

Yes, WarfarinGuide offers a specific protocol for the initiation of Warfarin. It addresses common questions about how to begin treatment for patients.

### How does WarfarinGuide assist with INR management?

The app provides a protocol for Warfarin dose adjustment based on INR results. It helps clinicians respond to various INR readings and determine appropriate next steps.

### Does WarfarinGuide cover artificial heart valve anticoagulation?

Yes, WarfarinGuide addresses common questions such as which artificial heart valves require higher levels of anticoagulation. It provides guidance relevant to these specific clinical scenarios.

### Is WarfarinGuide suitable for managing Warfarin around surgery?

WarfarinGuide offers guidance for the management of peri-operative Warfarin. It directs users to comprehensive resources for managing anticoagulants and antiplatelet agents around surgical procedures.

### What is the age rating for WarfarinGuide?

WarfarinGuide has an age rating of 17+. This indicates it is intended for mature audiences, likely due to the complex medical information it contains.

### How often is WarfarinGuide updated?

The latest version of WarfarinGuide is 2.2, last updated on May 16, 2021. This suggests updates occur periodically, though the exact frequency is not specified.

### Does WarfarinGuide have ads?

No, WarfarinGuide does not contain advertisements. It is a free application that provides medical information without interruptions.

## Version history (last 5 releases)

### 2.2 — 2021-05-16

this update has bug fixes for the user interface, next update will focus on medical content updates and enhancements, feel free to send suggestions

### 2.1 — 2014-11-04

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

works on iOS 8!

### 2.0 — 2012-11-19

Warfarin Guide has been updated to include guidance from the American College of Chest Physicians (ACCP) 2012 Antithrombotic and Thrombolytic Therapy 9th edition guideline.  This includes slight modifications to Warfarin adjustment protocols, discussion of Warfarin initiation, and more significant changes to management of supra-therapeutic INR results.

### 0.95 — 2011-11-28

finally works on iPad, thanks for your patience!

### 0.92 — 2011-10-14

minor errors corrected for clarity

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## More apps by Joshua D. steinberg

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All apps by Joshua D. steinberg: https://appshunter.io/developer/374154837

## Related topics

[warfarin](https://appshunter.io/ios/topics/warfarin) · [managing dabigatran](https://appshunter.io/ios/topics/managing-dabigatran) · [preop eval](https://appshunter.io/ios/topics/preop-eval) · [anticoagulation manager](https://appshunter.io/ios/topics/anticoagulation-manager)

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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 2026-07-25.*