# Guideline Central (Legacy) vs Clair

The clearest difference is iOS requirement: Clair at 13.4 against Guideline Central (Legacy)'s 16.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Guideline Central (Legacy) sells 10 in-app purchases, starting at $169.99 per year and Clair sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Guideline Central (Legacy) ships an update every 3 months, Clair every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Guideline Central (Legacy) | Clair |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (28 ratings)](https://appshunter.io/ios/app/guideline-central-legacy/id567695579/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 39 MB |
| Requires iOS | 16.1 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [International Guidelines Center, Inc](https://appshunter.io/developer/451486344) | [Cary Rx Incorporated](https://appshunter.io/developer/1234910727) |

## What reviewers say

### Guideline Central (Legacy)

[App page](https://appshunter.io/ios/app/guideline-central-legacy/id567695579)

Access a vast repository of clinical practice guidelines and decision-support tools for healthcare professionals. Quickly find condensed recommendations, pocket guides, calculators, drug information, and clinical trial data to improve patient care and support clinical decisions.

**Highlights:** Clinical practice guideline summaries, Guideline pocket guides, Clinical calculators, Drug information, Clinical trials search, USPSTF preventive services, MEDLINE/PubMed search

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Pocketguides Subscription | $169.99 | per year |
| Clostridium difficile Infection  IDSA, SHEA | Free | one-time |
| Antimicrobial Stewardship  IDSA, SHEA, SIDP | $5.99 | one-time |
| Community – Acquired Pneumonia  IDSA, ATS | $6.99 | one-time |
| Adult Sinusitis  AAO-HNS | $6.99 | one-time |
| Cholesterol - Adult Management  ACCF, AHA | $8.99 | one-time |
| Atrial Fibrillation  ACC/AHA | $8.99 | one-time |
| Diabetes Mellitus - Standards of Medical Care  ADA | $8.99 | one-time |
| ST-Elevation Myocardial Infarction (STEMI)  AHA, ACCF | $10.99 | one-time |
| Heart Failure  ACCF, AHA | $10.99 | one-time |

**What reviewers like**

- 🚀 Fast search
- 👍 Easy to use
- 👍 Great interface
- 👍 Comprehensive information
- 👍 Useful for clinicians

**What reviewers complain about**

- 🐛 Poorly executed
- 🐛 Sluggish performance
- 🐛 Unreadable tables
- 🐛 Incomplete sections
- 🐛 Useless app

**Reported bugs**

- Search-by-specialty and by-organization areas are blank
- Guidelines poorly reproduced
- Sections cut off
- Unable to open app
- Cannot open content

**Requested features**

- Allow deletion of guidelines from library
- Add enhancements periodically
- Improve search to find obvious things
- Ability to add own guidelines
- Links to full text guidelines


### Clair

[App page](https://appshunter.io/ios/app/clair-clinical-ai-reference/id6479413733)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clair Professional | $9.99 | per month |


## Frequently asked questions

### Is Guideline Central (Legacy) free?

Guideline Central (Legacy) is free to download, with in-app purchases available.

### Is Clair free?

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

### Do Guideline Central (Legacy) or Clair have ads?

Neither Guideline Central (Legacy) nor Clair shows ads.

### Which is updated more often, Guideline Central (Legacy) or Clair?

Guideline Central (Legacy) ships an update every 3 months, and Clair every 2 months. Most recently, Guideline Central (Legacy) was updated on November 1, 2026 and Clair on November 4, 2026.

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