Comparison

i vs Valve PPM

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

Head to head
About

i

This medical app assists clinical perfusionists and students with cardiac surgery calculations. It offers tools for patient volume, flow rates, drug information, and quizzes. Access common equations and perfusion news within the app.

Highlights
  • Adult and Pediatric Calculators
  • SVR and PVR Calculator
  • Oxygen Delivery and Consumption Calculator
  • Pediatric Cannula Recommendations
  • Searchable Drug Database
  • Multiple Choice Quiz
  • Common Equations and Normal Values
Features
Read full description

The i-Perfuse mobile application is designed for clinical perfusionists, students and individuals who work in the realm of cardiac surgery. Features Include: -Adult and Pediatric Calculator (BSA, BMI, Patient Volume, Plasma Volume, Total Volume, HCT on CPB, Flow Rates) -SVR and PVR Calculator -Oxygen Delivery and Consumption Calculator -Pediatric Cannula Recommendations based on previous case experiences at our institution along with pressure/flow relationships -Searchable Drug Database with commonly used drugs that perfusionists are exposed to (Category, Description, Mechanism of Action, Site of Action, Cardiovascular Indications) -Multiple Choice Quiz -Common Equations and Normal Values -Perfusion News Feed

About

Valve PPM

This tool assists medical professionals in assessing implanted prosthetic cardiac valves. It offers guidance for checking existing valve function and selecting the optimal valve before implantation based on patient and prosthesis parameters.

Highlights
  • Assess implanted valve function
  • Select optimal valve before implantation
  • Analyze patient and prosthesis parameters
  • Identify potential patient-prosthesis mismatch
  • Determine intrinsic prosthesis dysfunction
Features
Read full description

Valve PPM is an innovative mobile tool developed to support echocardiography professionals in their effort of assessing the functionality of implanted prosthetic cardiac valves. The application provides guidelines for assessing an already implanted valve (Check Valve Function) and for choosing a valve before implantation (Optimal Valve Selector). The algorithms behind the App have been derived after an extensive research of the published materials on the aortic and mitral prosthetic valve assessment. - Check Valve Function After selecting a particular valve type, the patient characteristics (weight/height) and the prosthesis actual parameters (peak velocity, mean gradient, VTI prosthesis, VTI LVOT and LVOTd), Valve PPM will provide the user with an answer regarding the normal function of the valve, the potential patient prosthesis mismatch or the intrinsic prosthesis dysfunction. - Optimal Valve Selector The user will be required to select a valve position (aortic/mitral) and the patient characteristics (weight/height) and Valve PPM will instantly indicate the minimum Effective Orifice Area (EOA) in order to avoid Patient Prosthesis Mismatch (PPM).

Screenshots

i4 screens
Valve PPM4 screens

Verdict

The call

The clearest difference is review sentiment: Valve PPM at 100% against i's 0%. Valve PPM also leads on rating (5.0 vs 3.4). i's advantage is iOS requirement (10.0 vs 15.1). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Valve PPM holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 0% of i's written reviews are positive against 100% of Valve PPM's.

UpkeepUpdate frequency

i ships an update every 4 months, Valve PPM every 2 months. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
i versus Valve PPM: the parameters behind the verdict, then further details
ParameteriValve PPM
PriceFreeFree
Rating3.4 (7 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings7 — better3
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS10.0 — better15.1
Further details — not scored
Size31 MB37 MB
Age rating12+12+
DeveloperCourtland MenkeKRUTSCH

Customer experience

i

All ratings7 ratings
Positive57.1%
Neutral0.0%
Negative42.9%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Valve PPM

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

i

No in-app purchases

None

Valve PPM

No in-app purchases

Questions

Is i free?
i is free to download, with no in-app purchases.
Is Valve PPM free?
Valve PPM is free to download, with no in-app purchases.
Which has better reviews, i or Valve PPM?
Valve PPM is rated higher. i averages 3.4 out of 5 from 7 ratings, while Valve PPM averages 5.0 from 3 ratings.
Do i or Valve PPM have ads?
Neither i nor Valve PPM shows ads.
Which is updated more often, i or Valve PPM?
i ships an update every 4 months, and Valve PPM every 2 months. Most recently, i was updated on September 21, 2026 and Valve PPM on October 8, 2026.

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