# Anesthesia One vs LabRef

The clearest difference is in-app purchases: LabRef at none against Anesthesia One's 2. LabRef also leads on update cadence (every 5 weeks vs every 4 months) and rating (5.0 vs 4.8). Anesthesia One's advantage is iOS requirement (15.1 vs 26). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Anesthesia One sells 2 in-app purchases, starting at $0.99 per month. LabRef asks for nothing beyond the download.

LabRef holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 25 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Anesthesia One ships an update every 4 months, LabRef every 5 weeks. The most recent releases landed on October 3, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Anesthesia One | LabRef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6 ratings)](https://appshunter.io/ios/app/anesthesia-one/id6503323182/reviews) | **[5.0 (25 ratings)](https://appshunter.io/ios/app/labref/id6751020319/reviews)** |
| Number of ratings | 6 | **25** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Freemium | **Free** |
| Size | 96 MB | 16 MB |
| Requires iOS | **15.1** | 26 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [anaesthesiaone](https://appshunter.io/developer/1688877450) | [Rishi Kumar](https://appshunter.io/developer/1434016052) |

## What reviewers say

### Anesthesia One

[App page](https://appshunter.io/ios/app/anesthesia-one/id6503323182)

This medical app provides a comprehensive toolbox for anesthesia care professionals. It offers customizable tools, an AI-powered assistant for case-specific guidance, and a natural language search for anesthesia guidelines. It works offline and allows users to save and share case logs.

**Highlights:** Customizable tool arrangement, AI-powered case assistant, Natural language guideline search, Offline functionality, Save and share case logs, Risk calculators and practice guidelines

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $0.99 | per month |
| Yearly Pro | $9.99 | per year |


### LabRef

[App page](https://appshunter.io/ios/app/labref/id6751020319)

This medical reference app provides concise interpretations and reference ranges for common laboratory values across various disciplines. It's designed for quick access at the bedside, aiding in clinical decision-making. The app is for educational and informational purposes only.

**Highlights:** Interprets common laboratory values, Covers hematology, nephrology, critical care, and perioperative medicine, Provides concise interpretations, Includes reference ranges, Clean, intuitive interface, Optimized for bedside use

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Anesthesia One free?

Anesthesia One is free to download, with in-app purchases available.

### Is LabRef free?

LabRef is free to download, with no in-app purchases.

### Which has better reviews, Anesthesia One or LabRef?

LabRef is rated higher. Anesthesia One averages 4.8 out of 5 from 6 ratings, while LabRef averages 5.0 from 25 ratings.

### Do Anesthesia One or LabRef have ads?

Neither Anesthesia One nor LabRef shows ads.

### Which is updated more often, Anesthesia One or LabRef?

Anesthesia One ships an update every 4 months, and LabRef every 5 weeks. Most recently, Anesthesia One was updated on October 3, 2026 and LabRef on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*