# The Ottawa Rules

> Clinical decision rules for healthcare professionals to guide patient care. (iPhone/iPad app by Ottawa Hospital Research Institute.)

- Source: https://appshunter.io/ios/app/the-ottawa-rules/id1104004722 (this page in markdown: same URL + `.md`)
- Developer: [Ottawa Hospital Research Institute](https://appshunter.io/developer/574951918)
- Category: Medical
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 9.0 · 155 MB
- Languages: American English
- Released: 2016-04-21
- Data updated: 2026-08-15
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/the-ottawa-rules/id1104004722/reviews.md

## What is The Ottawa Rules?

The Ottawa Rules are a set of clinical decision rules developed by Dr. Ian Stiell and his research team at The Ottawa Hospital Research Institute and the University of Ottawa.

The rules have been demonstrated to decrease unnecessary diagnostic imaging and emergency room wait times which enhances patient comfort and reduces health care costs. 

This app was developed to make the rules more accessible. This study aims to evaluate whether the usability of the app is related to the modality used and to evaluate whether it has any impact on diagnostic imaging rates.

## Key features

- Accessible clinical decision rules
- Reduces unnecessary imaging
- Decreases ER wait times
- Enhances patient comfort
- Lowers healthcare costs

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/the-ottawa-rules/id1104004722/reviews.md

### 5/5 — Simple and Beautiful

*2025-11-06*

A simple and beautiful app design for simple and beautiful rules

## Frequently asked questions about The Ottawa Rules

### What are The Ottawa Rules?

The Ottawa Rules are a set of clinical decision rules developed by Dr. Ian Stiell and his research team. They are designed to assist healthcare professionals in making more efficient and effective patient care decisions, particularly concerning diagnostic imaging.

### What is the main benefit of using The Ottawa Rules app?

The app aims to make these clinical decision rules more accessible, which can lead to a decrease in unnecessary diagnostic imaging and emergency room wait times. This ultimately enhances patient comfort and reduces overall healthcare costs.

### Is The Ottawa Rules app available on Android devices?

Based on the provided data, The Ottawa Rules app is supported on iPhone, iPad, and iPod. Information regarding Android compatibility is not available in this data.

### How often is The Ottawa Rules app updated?

The latest version of The Ottawa Rules app is 3.0.3, which was last updated on April 24, 2020. This indicates the app has not received updates in over three years.

### What is the age rating for The Ottawa Rules app?

The Ottawa Rules app has an age rating of 12+. This suggests it is suitable for users aged 12 and older.

### Does The Ottawa Rules app contain advertisements?

No, The Ottawa Rules app does not contain advertisements. It is a free application without any in-app purchases or ads.

### Who developed The Ottawa Rules app?

The Ottawa Rules app was developed by the Ottawa Hospital Research Institute, the same institution that developed the clinical decision rules themselves.

### What is the user feedback on The Ottawa Rules app?

The app has received a rating of 5.0 stars from 2 ratings. This suggests a very positive reception from its limited user base.

## Version history (last 5 releases)

### 3.0.3 — 2020-04-24

Fixed an issue with Dark mode.

### 3.0.2 — 2018-11-21

* Bug fixes

### 3.0.1 — 2018-11-15

* Added the SAH Rule and the TIA Score

### 3.0.0 — 2018-11-06

* Added the SAH Rule and the TIA Score

### 1.1.2 — 2017-12-04

* Fixed a small bug in the CT Head Rule

## More apps by Ottawa Hospital Research Institute

- [CAEP Atrial Fibrillation Guide](https://appshunter.io/ios/app/caep-atrial-fibrillation-guide/id1643146908)

All apps by Ottawa Hospital Research Institute: https://appshunter.io/developer/574951918

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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 2026-08-15.*