# Tintinalli's ER Study Guide 9E vs Guideline Central

The clearest difference is price: Guideline Central at Free against Tintinalli's ER Study Guide 9E's $199.99. Guideline Central also leads on update cadence (every 2 weeks vs every 26 months). Tintinalli's ER Study Guide 9E's advantage is iOS requirement (10.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Guideline Central is free to download; Tintinalli's ER Study Guide 9E costs $199.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tintinalli's ER Study Guide 9E ships an update every 26 months, Guideline Central every 2 weeks. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tintinalli's ER Study Guide 9E | Guideline Central |
| --- | --- | --- |
| Price | $199.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/guideline-central/id6770587739/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 678 MB | 36 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Usatine & Erickson Media LLC](https://appshunter.io/developer/1466894388) | [International Guidelines Center, Inc](https://appshunter.io/developer/451486344) |

## What reviewers say

### Tintinalli's ER Study Guide 9E

[App page](https://appshunter.io/ios/app/tintinallis-er-study-guide-9e/id1485624486)

**Features:** macOS Compatibility

**In-app purchases:** none


### Guideline Central

[App page](https://appshunter.io/ios/app/guideline-central/id6770587739)

Access a vast collection of clinical practice guidelines and decision-support tools. Quickly find recommendations, calculators, drug information, and more to improve patient care. Stay updated with the latest medical research and guidelines from global associations.

**Highlights:** Clinical practice guideline repository, Guideline summaries and full text links, Clinical calculators, Drug monographs, Clinical trials search, Preventive services recommendations, PubMed search integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Tintinalli's ER Study Guide 9E free?

Tintinalli's ER Study Guide 9E costs $199.99, with no in-app purchases.

### Is Guideline Central free?

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

### Do Tintinalli's ER Study Guide 9E or Guideline Central have ads?

Neither Tintinalli's ER Study Guide 9E nor Guideline Central shows ads.

### Which is updated more often, Tintinalli's ER Study Guide 9E or Guideline Central?

Tintinalli's ER Study Guide 9E ships an update every 26 months, and Guideline Central every 2 weeks. Most recently, Tintinalli's ER Study Guide 9E was updated on October 10, 2026 and Guideline Central on October 24, 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.*