Comparison

NYSORA Nerve Blocks vs RezClock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NYSORA Nerve Blocks

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
Currently charting
Read full description

A trusted reference for ultrasound-guided regional anesthesia, used by anesthesiologists and pain specialists worldwide. The app supports clinical preparation and learning across a wide range of regional anesthesia techniques. Covering nerve block procedures from head and neck to upper and lower extremities, thoracic, and abdominal wall blocks, it brings structured guidance and clear anatomy into one focused reference. Commonly performed techniques such as TAP (Transversus Abdominis Plane) block, ESP (Erector Spinae Plane) block, Interscalene Brachial Plexus Block, and Popliteal Sciatic Nerve Block are presented alongside many other approaches, each with ultrasound-focused visuals, functional anatomy, and step-by-step preparation. Designed for everyday use, the app combines sonoanatomy, patient positioning, and block-specific considerations to support confident decision-making before and during clinical practice. Developed by NYSORA, a global educational organization dedicated to advancing regional anesthesia through structured, practice-focused education.

About

RezClock

Automates medical resident duty hour tracking using location services to log arrival and departure times at clinical sites. Hours can be uploaded to other systems for generating ACGME required reports. Offers a free trial period before subscription.

Highlights
  • Automated time tracking
  • Location-based geofencing
  • Duty hours reporting
  • Data upload to MedProSuite
  • Free trial period
Features
Read full description

Medical Resident Duty Hours management app. RezClock automates time tracking for medical residents. RezClock uses phone's location services to determine when the resident arrives and leaves the clinical site. A clinical site is defined by creating a geofence around each work site user visits. The hours captured can then be uploaded to MedProSuite.com or another Duty Hours Tracking product to generate ACGME required Duty Hours Reports. Please note: Continued use of GPS running in the background can dramatically decrease battery life. RezClock is available by subscription(first 15 days are free). You may continue by: - Subscribing to RezClock Monthly for $0.99/month - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms & Conditions - http://rezclock.com/terms-conditions.html Privacy - http://rezclock.com/privacy.html

Screenshots

NYSORA Nerve Blocks4 screens
RezClock4 screens

Verdict

The call

The clearest difference is review sentiment: NYSORA Nerve Blocks at 56% against RezClock's 0%. NYSORA Nerve Blocks also leads on rating (4.9 vs 2.3) and monetization model (free with in-app purchases vs subscription). RezClock's advantage is iOS requirement (10.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NYSORA Nerve Blocks sells 2 in-app purchases, starting at $19.99 per month and RezClock sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

NYSORA Nerve Blocks holds the better App Store score, 4.9 against 2.3. 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 point the same way: 56% of NYSORA Nerve Blocks's written reviews are positive against 0% of RezClock's.

UpkeepUpdate frequency

NYSORA Nerve Blocks ships an update weekly, RezClock every 35 months. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.

Scorecard7 real differences · 4 level
NYSORA Nerve Blocks versus RezClock: the parameters behind the verdict, then further details
ParameterNYSORA Nerve BlocksRezClock
PriceFreeFree
Rating4.9 (1.1K ratings) — better2.3 (3 ratings)
Positive reviews56.0% of reviews — better0.0% of reviews
Number of ratings1.1K — better3
Update frequencyWeekly — betterEvery 35 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
Best chart rank#12 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.110.0 — better
Further details — not scored
Size69 MB24 MB
Age rating12+4+
DeveloperNYSORA inc.Mitra U.S. Computer Solutions, Inc

Customer experience

NYSORA Nerve Blocks

All ratings1,056 ratings
Positive97.1%
Neutral0.9%
Negative2.0%
Written reviews75 reviews
Positive56.0%
Neutral6.7%
Negative37.3%

RezClock

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

NYSORA Nerve Blocks

Reported bugs

10 issues
  • 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
Show 5 more
  • Error 500 during account creation
  • Unable to close full-size images without force closing app
  • Incompatibility with iOS 18.6 and older iOS versions
  • Learning modules and anatomy sections won't open
  • App crashes after recent updates

Requested features

9 requests
  • 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
Show 4 more
  • Pediatric regional anesthesia techniques
  • Video subtitles in multiple languages
  • Family sharing option for Apple accounts
  • Integration with CME credits for yearly subscriptions

RezClock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

NYSORA Nerve Blocks

Subscriptions2
  • FULL ACCESS SUBSCRIPTION$19.991 Month
  • FULL ACCESS SUBSCRIPTION$129.991 Year
1 purchases

RezClock

Subscriptions1
  • RezClock Monthly - $0.99/month$0.991 Month

Questions

Is NYSORA Nerve Blocks free?
NYSORA Nerve Blocks is free to download, with in-app purchases available.
Is RezClock free?
RezClock is free to download, with in-app purchases available.
Which has better reviews, NYSORA Nerve Blocks or RezClock?
NYSORA Nerve Blocks is rated higher. NYSORA Nerve Blocks averages 4.9 out of 5 from 1.1K ratings, while RezClock averages 2.3 from 3 ratings.
Do NYSORA Nerve Blocks or RezClock have ads?
Neither NYSORA Nerve Blocks nor RezClock shows ads.
Which is updated more often, NYSORA Nerve Blocks or RezClock?
NYSORA Nerve Blocks ships an update weekly, and RezClock every 35 months. Most recently, NYSORA Nerve Blocks was updated on October 18, 2026 and RezClock on October 2, 2026.

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