# INR log

> Warfarin/Coumadin treatment tracker for INR results and medication adherence. (iPhone/iPad app by HealthObs Ltd.)

- Source: https://appshunter.io/ios/app/inr-log/id929029358 (this page in markdown: same URL + `.md`)
- Developer: [HealthObs Ltd](https://appshunter.io/developer/498413740)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 2.90/5 from 18 App Store ratings · 47 written reviews indexed
- Age rating: 12+
- Requires: iOS 8.0 · 6 MB
- Languages: American English
- Released: 2014-10-25
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/inr-log/id929029358/reviews.md

## What is INR log?

If you take Warfarin or Coumadin, INR log can help you to keep track of your treatment.  

It is easy to use and allows you to record all your INR results and your treatment prescribed by your doctor. Each day it will show you your warfarin dose and sends you an alert when your treatment is due. It will also remind you when to take your next INR test to help you achieve the best possible control.

It is very flexible and allows you to enter your own treatment range and select up to 3 different size tablets. You can record your dose as a daily dose or weekly dose and change the dose very easily based on your doctor's advice.

Your INR results are displayed graphically and in a table and you can add earlier INR results so you can see a complete record over time. 

You can keep track of how well your treatment is going by following your time within the therapeutic range. This is a good measure of anticoagulant control and ideally should be above 60%. You can also keep track of your drug adherence if you record your treatment every day. 

INR log is ideal for anybody taking warfarin, whether you are self-testing using a near patient testing device or if you are managed through an anticoagulant clinic or hospital laboratory.

INR log has been developed by a Consultant Haematologist with more than 25yrs of experience managing people on warfarin. It has been designed to be easy to use providing you with the important information you need to achieve safe control. 

Please note:

INR log does not provide any medical advice about warfarin treatment. INR log is designed to be used only in conjunction with support from your healthcare professionals. It is designed as a convenient means of recording your treatment. If you have questions regarding your treatment you should consult your doctor supervising your treatment.

Disclaimer:
The software is to be used as an aid only and the user takes full responsibility for any data entered into the app. In no event shall the author or developer be liable to any party for damages resulting from the use of this application.

## Key features

- Record INR results
- Track warfarin/Coumadin doses
- Daily dose and weekly dose recording
- Medication and test reminders
- Graphical and tabular result display
- Time in therapeutic range tracking

## Recent user reviews (10 of 47)

All indexed reviews: https://appshunter.io/ios/app/inr-log/id929029358/reviews.md

### 2/5 — Mr

*2026-03-23, version 1.21*

It would be nice if the App allows you to change the amount of Coumadin on a 1, 2, 3, 4, 5, 6 day or weekly cycle.

### 3/5 — Feeling disappointed

*2025-07-05, version 1.21*

This app was exactly what I needed to report my husband’s INR directly to his doctor via email. It has been working perfectly for over two years. All of the sudden in the past 3 months app does not let me email latest INR results to his doctor. 
Says this device does not support the composer sheet. 
No way of contacting app developers.
Desperately need help to fix this bug. 
Thank you

### 2/5 — Lost all data- AGAIN, developer no show. 2025

*2025-06-19, version 1.21*

After years using and keeping it up to date. It crashes with no support from developer. To restart you have to delete the app and loose years of results!!!

Does anyone know of a better alternative. Ta

### 5/5 — Excellent product

*2024-10-04, version 1.21*

This app has been life changing!! I have a home point of care INR machine, and over the past year my INR has been within range over 80% of the time. I strongly recommend this app if you need to be on Warfarin lifelong. 

- R age 67 Alberta, Canada

### 4/5 — Decimals?

*2024-03-07, version 1.21*

I like your app but why does the dosage display 4…? When it should display 4.5.

### 1/5 — Why is stuff so simple so hard?

*2022-08-15, version 1.21*

This app is not flexible in a simple way What is needed is an ability to track different daily doses of warfarin with INR done when ever. For the last 6 years my inr has changed weekly. Simple is best…there are simple paper records could be easily adapted

### 5/5 — Doesn’t work now

*2022-06-03, version 1.21*

Was a good app but doesn’t work after updating to iOS 15.4 Update. App seems to work again following update to iOS 15.5 but doesn’t have warfarin listed. Perhaps the next update will?

### 4/5 — Works again!

*2022-05-31, version 1.21*

Very pleased that this is working again following the recent iOS update. The only additional feature I’d like to see would be the ability to edit the dose for each day.

### 5/5 — Great app

*2022-05-26, version 1.21*

This app works really well again now that IoS 15.5 has been released. (It had stopped working when IoS 15.4 hit. I wrote to the developer and got a really quick response that this had been unexpected and they were trying to obtain hardware for a fix). 
I know people have criticised that you can’t enter historical data if you forget to update the app when you take your meds - I just change the date / time on my iPad and hey presto, you can enter your meds for the day/time you took them.
I like the printable reports and regularly export them to notepad as a back up.
Easy to use and free, what more could you want?

### 1/5 — The app Stopped working

*2022-05-07, version 1.21*

I've updated iOS and this app stopped working! When I try to send a feedback here - it goes nowhere. Somebody please fix it!

## Frequently asked questions about INR log

### What does INR log do?

INR log is designed to help individuals taking warfarin or Coumadin manage their anticoagulant treatment. It allows you to record your INR results, track your prescribed medication doses, and receive reminders for when to take your medication and when your next INR test is due.

### What are the key features of INR log?

Key features include easy recording of INR results and treatment doses, customizable tablet sizes, daily or weekly dose entry, graphical and tabular display of results over time, and tracking of time within the therapeutic range. It also provides alerts for medication and upcoming tests.

### Is INR log free to use?

Yes, the application is free to use. There are no in-app purchases or advertisements mentioned in the provided description.

### Who is INR log intended for?

This app is ideal for anyone taking warfarin, whether they are self-testing their INR levels with a near-patient testing device or are being managed by an anticoagulant clinic or hospital laboratory.

### Can INR log provide medical advice?

No, INR log does not provide any medical advice regarding warfarin treatment. It is designed solely as a tool for recording and tracking your treatment in conjunction with the guidance of your healthcare professionals. Always consult your doctor for any questions about your treatment.

## Version history (last 3 releases)

### 1.21 — 2015-08-21

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

Corrected formatting for the iPhone 4 and iPad.
Minor bug fixes

### 1.2 — 2015-07-31

Allows you to save your results as a PDF to email to yourself or your doctor, and print out a hard copy.
Increased options for choosing when your medication is taken.
Increased options for choosing the date of the next test.
Revised terms and conditions.
A link to our Facebook page and a frequently asked questions page.

### 1.0 — 2014-10-24

No release notes.

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## More apps by HealthObs Ltd

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All apps by HealthObs Ltd: https://appshunter.io/developer/498413740

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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 2026-06-11.*