Comparison

Call Schedule vs Preop Eval

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

Head to head
About

Call Schedule

View physician call schedules prepared via a web account. Access your group's schedule on mobile devices using your account credentials. Suitable for physician groups and any team sharing on-call duties.

Highlights
  • View call schedules
  • Manual schedule preparation
  • Rule-based schedule generation
  • Web account integration
  • Mobile access
  • Supports physician groups
Features
Read full description

Call Schedule is a Schedule Viewer. Manual or Rule-based Call Schedules can be prepared for a small physician group or for large multi-specialty groups through a account on our website https://callschedule.us. The schedule can then be viewed on your mobile devices using your account number and schedule name as credentials. This application is ideally suited for physician call groups but will work equally well for any group that shares call.

About

Preop Eval

This app provides guidance for evaluating and preparing adult patients for non-cardiac surgery. It includes algorithms and resources on medication management, cardiac event timing, and preoperative testing, serving as both a reference and a teaching tool for medical professionals.

Highlights
  • Cardiac evaluation algorithm
  • Medication guidance (starting/stopping)
  • Surgery timing after cardiac events
  • Preoperative testing recommendations
  • Review for students and residents
  • Perioperative insulin management
Features
Read full description

Preop Eval organizes and presents much of the guidance that one needs in order to evaluate and prepare adult patients for non-cardiac surgery. It is based upon the guidelines on this topic from the American College of Cardiology, the European Society of Anaesthesiology, the American Society of Anesthesiologists, the Institute for Clinical Systems Improvement, the American College of Chest Physicians, and more (full references in the app). The app contains 1 algorithm and 3 resources: the cardiac evaluation algorithm, guidance on starting and stopping key medications in the perioperative period, guidance on timing of surgery after cardiac events, and guidance on preoperative testing. It also contains a review of preoperative evaluation mainly for students and residents. The app addresses such common questions as: - who needs bloodwork before surgery? - who needs an EKG or a CXR? - how do I handle patients on warfarin, clopidogrel, and DOAC's? - which patients need adjustment of perioperative insulin and diabetic meds, and how? - which active cardiac conditions preclude surgery? - how long after MI or stent should a patient wait before surgery? - are there adjustments to make on psych meds, rheumatologic meds, ACE's and ARB's? This app is written and intended for practicing physicians like internists, family physicians, and hospitalists; for resident physician trainees; and for medical students. In addition to being a reference, the algorithm is written to be a teaching tool by not just delivering an answer, but instead walking a physician through the evaluation process so that one learns that process along the way. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool.

Screenshots

Call Schedule4 screens
Preop Eval4 screens

Verdict

The call

The clearest difference is review sentiment: Preop Eval at 67% against Call Schedule's 0%. Preop Eval also leads on rating (5.0 vs 1.7) and in-app purchases (none vs 5). Call Schedule's advantage is ratings volume (9 vs 2) and iOS requirement (11.0 vs 16.6). On price, update cadence, ads 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. Call Schedule sells 4 one-off in-app purchases. Preop Eval asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Preop Eval holds the better App Store score, 5.0 against 1.7. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews point the same way: 0% of Call Schedule's written reviews are positive against 67% of Preop Eval's.

UpkeepUpdate frequency

Call Schedule ships an update every 3 months, Preop Eval every 6 months. The most recent releases landed on June 5, 2026 and September 10, 2026 respectively.

Scorecard5 real differences · 5 level
Call Schedule versus Preop Eval: the parameters behind the verdict, then further details
ParameterCall SchedulePreop Eval
PriceFreeFree
Rating1.7 (9 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings9 — better2
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better16.6
Further details — not scored
Size14 MB15 MB
Age rating4+17+
DeveloperAMC Logic LTDUnited Health Services, Inc.

Customer experience

Call Schedule

All ratings9 ratings
Positive11.1%
Neutral11.1%
Negative77.8%
Written reviews9 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Preop Eval

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

In-app purchases

4 purchases

Call Schedule

One-time4
  • Registration & Web Viewing$0.99
  • Renew for one month$1.99
  • Renew for three months$3.99
Show 1 more
  • Renew for one year2 variants$9.99
None

Preop Eval

No in-app purchases

Questions

Is Call Schedule free?
Call Schedule is free to download, with in-app purchases available.
Is Preop Eval free?
Preop Eval is free to download, with no in-app purchases.
Which has better reviews, Call Schedule or Preop Eval?
Preop Eval is rated higher. Call Schedule averages 1.7 out of 5 from 9 ratings, while Preop Eval averages 5.0 from 2 ratings.
Do Call Schedule or Preop Eval have ads?
Neither Call Schedule nor Preop Eval shows ads.
Which is updated more often, Call Schedule or Preop Eval?
Call Schedule ships an update every 3 months, and Preop Eval every 6 months. Most recently, Call Schedule was updated on June 5, 2026 and Preop Eval on September 10, 2026.

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