# NYSORA Nerve Blocks vs Arina Centerr

NYSORA Nerve Blocks and Arina Centerr both sit at 4.9 stars, but that hides the real split: 100% of Arina Centerr's written reviews are positive against 56% of NYSORA Nerve Blocks's. Arina Centerr also leads on in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.1). NYSORA Nerve Blocks's advantage is update cadence (weekly vs every 8 months) and ratings volume (1.1K vs 3). On price, rating, ads and device support there is nothing between them.

Both are free to download. NYSORA Nerve Blocks sells 2 in-app purchases, starting at $19.99 per month. Arina Centerr asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for NYSORA Nerve Blocks against 5.0 for Arina Centerr. That said, the two scores are not equally well evidenced: NYSORA Nerve Blocks has 1.1K ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 56% of NYSORA Nerve Blocks's written reviews are positive against 100% of Arina Centerr's.

NYSORA Nerve Blocks ships an update weekly, Arina Centerr every 8 months. The most recent releases landed on October 30, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | NYSORA Nerve Blocks | Arina Centerr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (1.1K ratings)](https://appshunter.io/ios/app/nysora-nerve-blocks/id912563749/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/arina-centerr/id1630996123/reviews)** |
| Number of ratings | **1.1K** | 3 |
| Positive reviews | 56.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#12** | — |
| Size | 69 MB | 74 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [NYSORA inc.](https://appshunter.io/developer/1507388998) | [ahmed salih](https://appshunter.io/developer/1850458777) |

## What reviewers say

### NYSORA Nerve Blocks

[App page](https://appshunter.io/ios/app/nysora-nerve-blocks/id912563749)

**Currently charting:** #12 Top Grossing · Medical (US App Store)

This app serves as a comprehensive reference for ultrasound-guided regional anesthesia, aiding anesthesiologists and pain specialists. It provides structured guidance and clear anatomy for a wide range of nerve block procedures, supporting clinical preparation and learning.

**Highlights:** Ultrasound-guided regional anesthesia reference, Covers head, neck, extremities, thoracic, and abdominal blocks, Includes sonoanatomy and functional anatomy, Step-by-step preparation for procedures, Supports clinical decision-making, Developed by a global educational organization

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FULL ACCESS SUBSCRIPTION | $19.99 | per month |
| FULL ACCESS SUBSCRIPTION | $129.99 | per year |

**What reviewers like**

- 📚 High-quality educational content and images
- 🎯 Clean, intuitive layout and user interface
- ✅ Comprehensive regional anesthesia reference
- 🔄 Regularly updated with current information
- 👨‍⚕️ Excellent for clinical practice and teaching

**What reviewers complain about**

- 💰 Expensive subscription pricing model
- 🐛 App crashes and won't open (frequent issue)
- 📱 Poor iPad/tablet support and landscape mode
- 🌐 Requires internet connection, no offline mode
- 🎥 Videos frequently fail to load or play

**Reported bugs**

- App won't open or stays on startup screen
- Blank page displayed on launch
- Videos fail to load or play
- Screen goes blank when accessing technique sections
- iCloud login authentication failures

**Requested features**

- Landscape orientation support for tablets and iPad
- Offline mode for accessing content without internet
- Additional language support (Russian, Turkish, Portuguese subtitles)
- Lifetime purchase option instead of subscription
- More regional anesthesia block techniques coverage


### Arina Centerr

[App page](https://appshunter.io/ios/app/arina-centerr/id1630996123)

This app provides access to various services and information related to a beauty center. Users can view services, see before-and-after examples, access personal health data, and manage their accounts. It caters to patients, doctors, consultants, and general users.

**Highlights:** View services and procedures, Access patient data and test results, See before-and-after treatment photos, Receive health guidance via notifications, Manage user profiles and accounts, Direct contact with the center via WhatsApp

**In-app purchases:** none


## Frequently asked questions

### Is NYSORA Nerve Blocks free?

NYSORA Nerve Blocks is free to download, with in-app purchases available.

### Is Arina Centerr free?

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

### Which has better reviews, NYSORA Nerve Blocks or Arina Centerr?

Arina Centerr is rated higher. NYSORA Nerve Blocks averages 4.9 out of 5 from 1.1K ratings, while Arina Centerr averages 5.0 from 3 ratings.

### Do NYSORA Nerve Blocks or Arina Centerr have ads?

Neither NYSORA Nerve Blocks nor Arina Centerr shows ads.

### Which is updated more often, NYSORA Nerve Blocks or Arina Centerr?

NYSORA Nerve Blocks ships an update weekly, and Arina Centerr every 8 months. Most recently, NYSORA Nerve Blocks was updated on October 30, 2026 and Arina Centerr on October 22, 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.*