# ICU Advantage Rapid Reference vs Stable

The clearest difference is in-app purchases: Stable at none against ICU Advantage Rapid Reference's 2. ICU Advantage Rapid Reference's advantage is ratings volume (113 vs 7) and update cadence (every 2 weeks vs monthly). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. ICU Advantage Rapid Reference sells 2 in-app purchases, starting at $15.00 per month. Stable asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for ICU Advantage Rapid Reference against 5.0 for Stable. That said, the two scores are not equally well evidenced: ICU Advantage Rapid Reference has 113 ratings behind it against 7, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

ICU Advantage Rapid Reference ships an update every 2 weeks, Stable monthly. The most recent releases landed on October 1, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ICU Advantage Rapid Reference | Stable |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (113 ratings)](https://appshunter.io/ios/app/icu-advantage-rapid-reference/id6763389459/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/stable-ish/id6773289202/reviews)** |
| Number of ratings | **113** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#136** | #199 |
| Size | 93 MB | 46 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [ICU Advantage LLC](https://appshunter.io/developer/1895291008) | [Stable-ish LLC](https://appshunter.io/developer/6773289204) |

## What reviewers say

### ICU Advantage Rapid Reference

[App page](https://appshunter.io/ios/app/icu-advantage-rapid-reference/id6763389459)

**Currently charting:** #136 Top Grossing · Medical (US App Store)

This clinical reference tool helps critical care professionals understand complex patient conditions. It provides organ-system-based information, ventilator settings, drug references, calculators, and interactive protocols. Designed for nurses, therapists, and providers, it focuses on deep understanding rather than just quick lookups.

**Highlights:** Organ-system-based clinical reference, Ventilator settings and troubleshooting, Drug references with dosing and pearls, Calculators and scoring systems, Interactive emergency protocols, Offline access to content, Search functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rapid Reference Monthly | $15.00 | per month |
| Rapid Reference Annual | $129.00 | per year |


### Stable

[App page](https://appshunter.io/ios/app/stable-ish/id6773289202)

**Currently charting:** #199 Top Grossing · Medical (US App Store)

This clinical reference app assists critical care nurses and healthcare providers with high-risk concepts, clinical scenarios, and complex topic explanations. It offers practical workflows, safety prompts, and educational modes for quick review or step-by-step learning.

**Highlights:** ED and critical care clinical reference, Nursing-focused calculators and dosing support, Scenario simulator for clinical reasoning, Toxicology and overdose reference, SBAR-style communication support, Plain-language education, Safety reminders

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ICU Advantage Rapid Reference free?

ICU Advantage Rapid Reference is free to download, with in-app purchases available.

### Is Stable free?

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

### Which has better reviews, ICU Advantage Rapid Reference or Stable?

Stable is rated higher. ICU Advantage Rapid Reference averages 4.9 out of 5 from 113 ratings, while Stable averages 5.0 from 7 ratings.

### Do ICU Advantage Rapid Reference or Stable have ads?

Neither ICU Advantage Rapid Reference nor Stable shows ads.

### Which is updated more often, ICU Advantage Rapid Reference or Stable?

ICU Advantage Rapid Reference ships an update every 2 weeks, and Stable monthly. Most recently, ICU Advantage Rapid Reference was updated on October 1, 2026 and Stable on September 24, 2026.

### Which is more popular, ICU Advantage Rapid Reference or Stable?

ICU Advantage Rapid Reference currently peaks at #136 in the App Store charts, and Stable at #199. Chart position reflects recent download velocity rather than total install base.

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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.*