Comparison

Zwisch Surgery vs ETSU CPG

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

Head to head
About

Zwisch Surgery

Features
Read full description

The operating room (OR) remains primarily a master/apprentice-based learning environment for surgical residents. This app puts into practice a simple model for teaching and assessing residents in the OR to guide faculty and resident interaction and to help determine a trainee's earned level of autonomy for a given procedure. It is based on an original paper published out of Northwestern University Feinberg School of Medicine and the University of Kentucky College of Medicine (Debra A. DaRosa, PhD, Joseph B. Zwischenberger, MD, Shari L. Meyerson, MD, et al. A Theory-Based Model for Teaching and Assessing Residents in the Operating Room, Journal of Surgical Education, Volume 70(1), 2012.) The resident surgeon initiates the assessment by logging the date, type of procedure, attending surgeon and hospital. (S)he is then asked to self rate their level of participation (Zwisch option) and the degree of difficulty of the procedure. This information is transmitted by SMS to the attending surgeon who then provides his or her Zwisch option, degree of difficulty, operative performance, and procedural milestone data for the same case, with no knowledge of the resident's contribution. The attending surgeon's assessment is then stored along with the resident's assessment for future analysis. The app is functional only for university programs that have adopted this assessment tool.

About

ETSU CPG

Features
Read full description

The CPG lists guidelines and evidence for Distal Radius Fracture (DRF) ,Β Carpal Tunnel, and Lateral Elbow Pain treatment. It covers prognosis, examination measures, and intervention (follow-up) methods. Our app provides recommendations to clinical practitioners based on the document. It allows them to input contextual information and then receive customized guidelines for each area: prognosis, examination, and intervention. The overall business goals are to improve the efficiency and accuracy of the treatment process, reducing health care costs.

Screenshots

Zwisch Surgery4 screens
ETSU CPG1 screens

Verdict

The call

The clearest difference is iOS requirement: Zwisch Surgery at 13.0 against ETSU CPG's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Zwisch Surgery ships an update every 2 weeks, ETSU CPG every 3 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard1 real difference Β· 5 level
Zwisch Surgery versus ETSU CPG: the parameters behind the verdict, then further details
ParameterZwisch SurgeryETSU CPG
PriceFreeFree
Update frequencyEvery 2 weeks β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS13.0 β€” better15.1
Further details β€” not scored
Size6 MB39 MB
Age rating12+12+
DeveloperCovenant Data Systems, LLCEvan Harris

In-app purchases

None

Zwisch Surgery

No in-app purchases

None

ETSU CPG

No in-app purchases

Questions

Is Zwisch Surgery free?
Zwisch Surgery is free to download, with no in-app purchases.
Is ETSU CPG free?
ETSU CPG is free to download, with no in-app purchases.
Do Zwisch Surgery or ETSU CPG have ads?
Neither Zwisch Surgery nor ETSU CPG shows ads.
Which is updated more often, Zwisch Surgery or ETSU CPG?
Zwisch Surgery ships an update every 2 weeks, and ETSU CPG every 3 weeks. Most recently, Zwisch Surgery was updated on October 26, 2026 and ETSU CPG on October 28, 2026.

Other comparisons