Comparison

Sanford Guide Antimicrobial vs RezClock

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

Head to head
About

Sanford Guide Antimicrobial

Provides clinicians with concise, evidence-based treatment guidance for infectious diseases. Features interactive tools like spectra charts, drug interaction checkers, and dosing calculators to support rapid decision-making in fast-paced medical settings.

Highlights
  • Clinically actionable answers
  • Institutionally diverse editorial team
  • Constant updates
  • Interactive antibacterial spectra chart
  • Drug-drug interaction checker
  • Trustworthy dosing calculators
Features
Currently charting
Read full description

Clinically Actionable, Concise Answers Get exactly what you need to make the best decision in a fast-paced setting. Institutionally Diverse Editorial Team by Design Not every organization has the same patient population, budget, or processes. We bring perspectives from many medical institutions. Constant Updates New recommendations are added quickly by our nine-member editorial team. ‘Why Didn’t I Think of That’ Tools An interactive antibacterial spectra chart, drug-drug interactions, and trustworthy calculators to define accurate dosing. Praise from Providers “Indispensable—If you're going to prescribe you must have a way to remain current.” “One of the most helpful tools in medicine!” “I use this app every day I work” Who Needs This App Since 1969, Sanford Guide has been the leading clinical treatment guide for infectious diseases. Popular with physicians, pharmacists, physician assistants, nurse practitioners, and other clinicians, Sanford Guide provides convenient, concise, and reliable medical information. Coverage includes clinical syndromes (organized by anatomic system/site of infection), pathogens (bacterial, fungal, mycobacterial, parasitic and viral), anti-infective agents (dosing, adverse effects, activity, pharmacology, interactions), expanded HIV/AIDS and Hepatitis information, specialized dosing tables and tools, calculators, and preventative therapy, all evidence-based and extensively referenced. Sanford Guide Antimicrobial Therapy is currently written in the English language. Auto-renewing subscriptions: -An in-app subscription is $39.99 for one year. (Subscription price varies by country) -Payment will be charged to your Apple ID at confirmation of purchase. -Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. -Your Apple ID will be charged for renewal within 24-hours prior to the end of the current subscription period. -Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. -No cancellation of a current subscription is allowed during the active subscription period. -Subscriptions are subject to our Terms of Use, which are available at: https://www.sanfordguide.com/about/legal/terms-of-use/. -Our privacy policy can be viewed at: https://www.sanfordguide.com/about/legal/privacy-policy/ Disclaimer: The “Sanford Guide Antimicrobial Therapy” app is intended for use by health care professionals and trainees only, and not by the general public. Every effort is made to ensure the accuracy of the content of this app. However, current full prescribing information available in the package insert for each drug should be consulted before prescribing any product. The editors and publisher are not responsible for errors or omissions or for any consequences from application of our print and digital content, and make no warranty, express or implied, with respect to the currency, accuracy, or completeness of the contents of this publication. The information in this app is not a substitute for professional medical advice, diagnosis, or treatment. Application of this information in a particular situation remains solely the professional responsibility of the health care provider.

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

Sanford Guide Antimicrobial4 screens
RezClock4 screens

Verdict

The call

The clearest difference is review sentiment: Sanford Guide Antimicrobial at 85% against RezClock's 0%. Sanford Guide Antimicrobial also leads on rating (4.8 vs 2.3) and update cadence (every 3 weeks vs every 35 months). RezClock's advantage is iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and monetization model 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. Sanford Guide Antimicrobial sells 3 in-app purchases, starting at $4.99 per year 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

Sanford Guide Antimicrobial holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: Sanford Guide Antimicrobial has 1.9K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 85% of Sanford Guide Antimicrobial's written reviews are positive against 0% of RezClock's.

UpkeepUpdate frequency

Sanford Guide Antimicrobial ships an update every 3 weeks, RezClock every 35 months. The most recent releases landed on September 24, 2026 and June 11, 2026 respectively.

Scorecard6 real differences · 5 level
Sanford Guide Antimicrobial versus RezClock: the parameters behind the verdict, then further details
ParameterSanford Guide AntimicrobialRezClock
PriceFreeFree
Rating4.8 (1.9K ratings) — better2.3 (3 ratings)
Positive reviews84.7% of reviews — better0.0% of reviews
Number of ratings1.9K — better3
Update frequencyEvery 3 weeks — betterEvery 35 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionSubscription
Best chart rank#9 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.010.0 — better
Further details — not scored
Size44 MB24 MB
Age rating17+4+
DeveloperAntimicrobial Therapy, Inc.Mitra U.S. Computer Solutions, Inc

Customer experience

Sanford Guide Antimicrobial

All ratings1,876 ratings
Positive94.9%
Neutral1.3%
Negative3.8%
Written reviews196 reviews
Positive84.7%
Neutral3.6%
Negative11.7%

RezClock

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

Bugs and requests

Sanford Guide Antimicrobial

Reported bugs

3 issues
  • App freezing or closing unexpectedly
  • Login and subscription verification problems
  • Corrupted passwords and inability to reset

Requested features

3 requests
  • Side-by-side antibiotic susceptibility comparison
  • Offline access to content
  • Improved navigation and UI

RezClock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Sanford Guide Antimicrobial

Subscriptions3
  • U.S. Vaccine Guidelines7 Days trial$4.991 Year
  • Sanford Guide7 Days trial$39.991 Year
  • Sanford Guide All Access7 Days trial$79.991 Year
1 purchases

RezClock

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

Questions

Is Sanford Guide Antimicrobial free?
Sanford Guide Antimicrobial 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, Sanford Guide Antimicrobial or RezClock?
Sanford Guide Antimicrobial is rated higher. Sanford Guide Antimicrobial averages 4.8 out of 5 from 1.9K ratings, while RezClock averages 2.3 from 3 ratings.
Do Sanford Guide Antimicrobial or RezClock have ads?
Neither Sanford Guide Antimicrobial nor RezClock shows ads.
Which is updated more often, Sanford Guide Antimicrobial or RezClock?
Sanford Guide Antimicrobial ships an update every 3 weeks, and RezClock every 35 months. Most recently, Sanford Guide Antimicrobial was updated on September 24, 2026 and RezClock on June 11, 2026.

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