# AORN eBooks vs PeriOptimization Lite

The clearest difference is rating: PeriOptimization Lite at 5.0 against AORN eBooks's 2.0. PeriOptimization Lite also leads on update cadence (every 6 days vs every 3 months) and iOS requirement (11.0 vs 15.0). AORN eBooks's advantage is ratings volume (12 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PeriOptimization Lite holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: AORN eBooks has 12 ratings behind it against 1, so its average is the more settled of the two.

AORN eBooks ships an update every 3 months, PeriOptimization Lite every 6 days. The most recent releases landed on June 25, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | AORN eBooks | PeriOptimization Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (12 ratings)](https://appshunter.io/ios/app/aorn-ebooks/id828332966/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/perioptimization-lite/id1661614588/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 42 MB | 34 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ASSOCIATION OF OPERATING ROOM NURSES INC.](https://appshunter.io/developer/828332969) | [Shankara Subramanian](https://appshunter.io/developer/1661614590) |

## What reviewers say

### AORN eBooks

[App page](https://appshunter.io/ios/app/aorn-ebooks/id828332966)

Access and read essential perioperative nursing practice guides and curriculum materials. Purchase and download eBooks from the AORN website to enhance your knowledge and skills in patient and staff safety within surgical care.

**Highlights:** Read AORN eBooks, Access Guidelines for Perioperative Practice, Study Core Curriculum for RN First Assistant, Purchase eBooks via AORN website, Evidence-based practice resources

**Features:** macOS Compatibility

**In-app purchases:** none


### PeriOptimization Lite

[App page](https://appshunter.io/ios/app/perioptimization-lite/id1661614588)

This app assists surgical staff in preparing for procedures by providing guidance on positioning, equipment, and instrumentation. It includes instructional videos and expert tips to ensure all necessary materials are ready before a case begins.

**Highlights:** Surgical procedure preparation guidance, Equipment and instrumentation instructions, Patient positioning advice, Instructional videos, Expert tips from perioperative nurses

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AORN eBooks free?

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

### Is PeriOptimization Lite free?

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

### Which has better reviews, AORN eBooks or PeriOptimization Lite?

PeriOptimization Lite is rated higher. AORN eBooks averages 2.0 out of 5 from 12 ratings, while PeriOptimization Lite averages 5.0 from 1 ratings.

### Do AORN eBooks or PeriOptimization Lite have ads?

Neither AORN eBooks nor PeriOptimization Lite shows ads.

### Which is updated more often, AORN eBooks or PeriOptimization Lite?

AORN eBooks ships an update every 3 months, and PeriOptimization Lite every 6 days. Most recently, AORN eBooks was updated on June 25, 2026 and PeriOptimization Lite on June 11, 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.*