# Rangewell: INR & Warfarin Log — Doses, Time in Range, Reports

> Logbook for warfarin users to track INR, doses, and therapeutic range. (iPhone/iPad app by Develak.)

- Source: https://appshunter.io/ios/app/rangewell-inr-and-warfarin-log/id6792463379 (this page in markdown: same URL + `.md`)
- Developer: [Develak](https://appshunter.io/developer/1803580275)
- Category: Medical, Health & Fitness
- Price: Free
- Age rating: 12+
- Requires: iOS 17.0 · 7 MB
- Languages: Korean, Gujarati, Greek, Dutch, Danish, German (Germany), Russian, Romanian, Marathi, Malayalam and 34 more
- Released: 2026-08-16
- Data updated: 2026-08-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/rangewell-inr-and-warfarin-log/id6792463379/reviews.md

## What is Rangewell?

Rangewell is a logbook for people taking warfarin or another vitamin K antagonist.

It records what you and your anticoagulation clinic decide. It never suggests a dose and never interprets a result.

YOUR INR, AGAINST YOUR OWN RANGE
Record a reading in seconds. Rangewell draws it against the target range your clinic gave you — the green band you can read at a glance — so you can see the shape of your control instead of a column of numbers.

THE WEEK, NOT A DAILY DOSE
Warfarin is prescribed as a week: one tablet Monday, Wednesday and Friday, half the other days. Generic pill reminders cannot hold that. Rangewell can. Set each day separately, in quarters of a tablet or in milligrams, and see the weekly total your clinic speaks in.

TWO REMINDERS THAT MATTER
One for the dose, on the days your schedule actually has one. One for the next INR test — the appointment people say they forget most, because a missed tablet is obvious and a missed test is not.

BUILT TO BE READ
Large type, high contrast, full VoiceOver support, and nothing that depends on telling green from amber. Text scales to the largest accessibility sizes without losing a word.

RANGEWELL PRO
• Time in Therapeutic Range — the Rosendaal figure your clinic tracks, over 30, 90 or 365 days
• A printable clinic report: readings, doses, TTR and events on one page
• An interference journal for vitamin K, antibiotics, alcohol and illness
• Bleeding and bruising records
• Encrypted iCloud sync across your devices
• Travel mode and an emergency card

EVERYTHING EXPORTS
Readings, doses and everything logged alongside them go into one CSV file — not four, so it opens in any spreadsheet and travels by email or AirDrop. A logbook you cannot get your data out of is not a logbook.

YOUR DATA IS YOURS
Everything stays on your device unless you turn on iCloud sync, and then it goes only to your own iCloud account. No advertising, no tracking, no accounts.

Rangewell is not a medical device. It does not provide medical advice. Always follow your anticoagulation clinic.

SUBSCRIPTION AND PURCHASE
Rangewell Pro is available as a monthly or annual subscription, or as a one-time lifetime purchase. The annual plan starts with a 7-day free trial. Payment is charged to your Apple Account when you confirm the purchase. A subscription renews automatically unless you turn off auto-renew at least 24 hours before the current period ends; your account is charged for renewal within 24 hours before the end of the current period. You can manage or cancel a subscription in your Apple Account settings. 

Privacy Policy: https://develak.com/privacy-policy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- INR reading logging
- Visual INR range tracking
- Weekly dose scheduling
- Medication and test reminders
- Time in Therapeutic Range (TTR)
- Printable clinic reports
- Interference journal
- Data export to CSV

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/rangewell-inr-and-warfarin-log/id6792463379/reviews.md

### 3/5 — 怎么没有小数点后3位的设置

*2026-08-19*

添加一个小数点后3位设置。

**Developer response:** 您好，感谢您的反馈。

您提的这一点很对。INR 通常写作一位小数，之前 App 就是这样固定的，
所以化验单上的 2.35 只能记成 2.4。

1.1 版已加入这个设置：设置 › 显示 › INR 小数位数，可选 1、2 或 3 位。
选好之后，App 里的数字就和化验单完全一致，CSV 导出也会保留完整数值。
已经记录过的数据不受影响。

新版本审核通过后就会上线。再次感谢您专门写下这条评价 —— 正是因为您
提了，这个功能才有了。

Rangewell 团队

## Frequently asked questions about Rangewell

### What is Rangewell?

Rangewell is a logbook designed for individuals taking warfarin or other vitamin K antagonists. It helps users track their INR readings, medication doses, and target ranges, providing visual insights into their treatment control.

### Does Rangewell interpret INR results or suggest doses?

No, Rangewell is designed to be a neutral logbook. It records what you and your anticoagulation clinic decide and never suggests a dose or interprets a result. Always follow your anticoagulation clinic's guidance.

### How does Rangewell handle weekly warfarin dosing?

Warfarin is often prescribed as a weekly regimen. Rangewell can schedule each day's dose separately, allowing for fractions of a tablet or specific milligram amounts, and displays the weekly total as discussed with your clinic.

### What are the benefits of Rangewell Pro?

Rangewell Pro offers advanced features like Time in Therapeutic Range (TTR) calculation, printable clinic reports, an interference journal for factors like diet and illness, bleeding and bruising records, and encrypted iCloud sync.

### Can I export my data from Rangewell?

Yes, all logged data, including readings, doses, and associated events, can be exported into a single CSV file. This file is compatible with most spreadsheets and can be easily shared via email or AirDrop.

### How is my data protected in Rangewell?

Your data remains on your device unless you enable iCloud sync, in which case it is only sent to your personal iCloud account. The app does not use advertising or tracking, and does not require accounts.

### What is the cost of Rangewell?

The basic Rangewell app is free to use. Rangewell Pro features are available through a monthly or annual subscription, or a one-time lifetime purchase. The annual plan includes a 7-day free trial.

### Is Rangewell suitable for all ages?

Rangewell has an age rating of 12+. It is designed for individuals managing anticoagulant therapy, which is typically prescribed to adults.

## Version history (last 2 releases)

### 1.1 — 2026-08-25

Some laboratories report INR to two or three decimal places rather than one. Settings › Display now lets you match yours, so your logbook reads exactly like the result on your paper.

Readings you have already recorded are untouched, and CSV export now carries the full value.

Thank you to the reader who asked for this.

### 1.0 — 2026-08-17

No release notes.

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All apps by Develak: https://appshunter.io/developer/1803580275

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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 2026-08-31.*