# FP Notebook vs PASS CEN!

The clearest difference is monetization model: PASS CEN! at free with in-app purchases against FP Notebook's subscription. PASS CEN! also leads on iOS requirement (13.0 vs 15.0). FP Notebook's advantage is rating (4.9 vs 4.4) and ads (none vs shown). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. FP Notebook sells 3 in-app purchases, starting at $1.99 per month and PASS CEN! sells 4 in-app purchases, starting at $44.99 per year. Whichever you choose, the download price is not the number that matters.

FP Notebook holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: FP Notebook has 3.3K ratings behind it against 8, so its average is the more settled of the two.

FP Notebook ships an update every 2 months, PASS CEN! every 4 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | FP Notebook | PASS CEN! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (3.3K ratings)](https://appshunter.io/ios/app/fp-notebook/id835973313/reviews)** | [4.4 (8 ratings)](https://appshunter.io/ios/app/pass-cen/id1550094737/reviews) |
| Number of ratings | **3.3K** | 8 |
| Positive reviews | 61.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | **#55** | — |
| Size | 141 MB | 147 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [Atmosphere Apps, Inc.](https://appshunter.io/developer/334077424) | [Skyscape Medpresso Inc](https://appshunter.io/developer/818609416) |

## What reviewers say

### FP Notebook

[App page](https://appshunter.io/ios/app/fp-notebook/id835973313)

**Currently charting:** #55 Top Grossing · Medical (US App Store)

A comprehensive medical reference for primary care and emergency clinicians, offering rapid access to over 6100 interlinked topic pages. Content is updated monthly through literature reviews and conferences, providing up-to-date information for medical professionals.

**Highlights:** Rapid access medical reference, Over 6100 interlinked topic pages, Content updated monthly, 31 specialty books, 700+ chapters, Point-of-care tool

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Annual Subscription | $19.99 | per year |
| Annual Sub | $24.99 | per year |

**What reviewers like**

- 🌟 Excellent, comprehensive medical reference
- ⚡️ Efficient, concise, and easy to use
- 🧠 Invaluable for medical students, residents, and practitioners
- 🤝 Highly recommended by users
- 🕰️ Frequently used and relied upon for years

**What reviewers complain about**

- 💰 Subscription model frustrates some users who previously had free access
- 🐞 Occasional app freezing or crashing issues reported
- 🔍 Built-in search function could be improved

**Reported bugs**

- App freezing or crashing on certain devices
- Subscription issues or unexpected charges

**Requested features**

- Ability to earn continuing education credits through the app
- Improved search functionality


### PASS CEN!

[App page](https://appshunter.io/ios/app/pass-cen/id1550094737)

Prepare for the Certification for Emergency Nurses exam with this comprehensive reference. It covers all exam content areas with interactive learning activities and realistic practice questions. Features include an outline format, case studies, and integrated pharmacology and anatomy content.

**Highlights:** Covers current CEN exam blueprint, Interactive learning activities, Realistic practice questions, Case studies with clinical reasoning, Outline format for clarity, Integrated pharmacology and A&P

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25% Off - Limited Period Offer | $44.99 | per year |
| 20% Off - Limited Period Offer | $47.99 | per year |
| 15% Off - Limited Period Offer | $50.99 | per year |
| PASS CCRN®! 1Y Sub. | $59.99 | per year |


## Frequently asked questions

### Is FP Notebook free?

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

### Is PASS CEN! free?

PASS CEN! is free to download, with in-app purchases available.

### Which has better reviews, FP Notebook or PASS CEN!?

FP Notebook is rated higher. FP Notebook averages 4.9 out of 5 from 3.3K ratings, while PASS CEN! averages 4.4 from 8 ratings.

### Do FP Notebook or PASS CEN! have ads?

PASS CEN! shows ads; FP Notebook does not.

### Which is updated more often, FP Notebook or PASS CEN!?

FP Notebook ships an update every 2 months, and PASS CEN! every 4 months. Most recently, FP Notebook was updated on October 15, 2026 and PASS CEN! on October 7, 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.*