Comparison

Indigo 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

Indigo

A comprehensive medical reference for internal medicine, covering conditions from anemia to HIV/AIDS. It offers guidance for managing common ward and ICU cases, plus essential tips for new residents on consults and H&Ps. Designed for educational purposes for medical students and residents.

Highlights
  • Internal medicine management
  • Anemia and lab abnormalities
  • Chronic condition management (e.g., AIDS/HIV)
  • Ward and ICU case management
  • Tips for new residents
  • Consultation and H&P guidance
Features
Read full description

This is a comprehensive mobile medicine reference that includes management of everything in internal medicine ranging from anemia, lab abnormalities, to complicated chronic conditions such as AIDS/HIV. This includes all the common cases you'll see on a medicine ward / ICU and how to manage them. In addition, it offers amazing tips on how to survive on being a new resident - such as how to properly call consults, how to write H&Ps etc. A must have for anyone new to residency and even anyone who's a practicing physician. THE APP DOES NOT PROVIDE MEDICAL ADVICE. The contents of this App ("Content") are for informational and educational purposes only. The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. This app is geared for further education of medical students and residents only, and is not meant to replace medical advice from a trained professional. Always seek the advice of state accredited Attendings or Subspecialists with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this App. If you think your patient may have a medical emergency, call a rapid response or appropriate code immediately. This App does not recommend or endorse any specific tests, physicians, products, procedures, opinions, or other information that may be mentioned. Reliance on any information provided in this App is solely at your own risk. THE USE OF THIS APP AND THE CONTENT IS AT YOUR OWN RISK. This App and the Content are provided on an "as is" basis. THE PROVIDERS OF THIS APP, TO THE FULLEST EXTENT PERMITTED BY LAW, DISCLAIM ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT OF THIRD PARTIES' RIGHTS, AND FITNESS FOR PARTICULAR PURPOSE. Without limiting the foregoing, the Providers of the App make no representations or warranties about the accuracy, reliability, completeness, currentness, or timeliness of the Content. In no event shall the Providers of the App be liable for any damages (including, without limitation, incidental and consequential damages, personal injury/wrongful death, lost profits, adverse consequences due to invasive procedures, or damages resulting from lost data or business interruption) resulting from the use of or inability to use this App or the Content, whether based on warranty, contract, tort, or any other legal theory, and whether or not the Providers of the App are advised of the possibility of such damages. The Providers of the App are not liable for any personal injury, including death, caused by your use or misuse of this App. By using this App, you agree to defend, indemnify, and hold the Providers of the App harmless from and against any claims, actions or demands, liabilities and settlements including without limitation, reasonable legal and accounting fees, resulting from, or alleged to result from, your violation of these Terms and Conditions. Questions or comments regarding this App should be submitted to: indigotheapp@gmail.com ©2025 David Fink MD, Wei Yang MD

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

Indigo4 screens
Valve PPM4 screens

Verdict

The call

The clearest difference is rating: Valve PPM at 5.0 against Indigo's 4.5. Valve PPM also leads on review sentiment (100% vs 67%). Indigo's advantage is ratings volume (15 vs 3) and iOS requirement (12.0 vs 15.1). On price, update cadence, ads and in-app purchases 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 4.5. That said, the two scores are not equally well evidenced: Indigo has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of Indigo's written reviews are positive against 100% of Valve PPM's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
Indigo versus Valve PPM: the parameters behind the verdict, then further details
ParameterIndigoValve PPM
PriceFreeFree
Rating4.5 (15 ratings)5.0 (3 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings15 — better3
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size23 MB37 MB
Age rating17+12+
DeveloperINDIGOMED LLCKRUTSCH

Customer experience

Indigo

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Valve PPM

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

In-app purchases

None

Indigo

No in-app purchases

None

Valve PPM

No in-app purchases

Questions

Is Indigo free?
Indigo 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, Indigo or Valve PPM?
Valve PPM is rated higher. Indigo averages 4.5 out of 5 from 15 ratings, while Valve PPM averages 5.0 from 3 ratings.
Do Indigo or Valve PPM have ads?
Neither Indigo nor Valve PPM shows ads.
Which is updated more often, Indigo or Valve PPM?
Indigo ships an update every 2 months, and Valve PPM every 2 months. Most recently, Indigo was updated on October 24, 2026 and Valve PPM on October 8, 2026.

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