Perinatal Calculators vs PlexusMD Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perinatal Calculators
This app provides essential obstetrical and perinatal calculators for healthcare providers. It aids in patient counseling with tools for assessing risks like extreme prematurity and Down Syndrome, and managing conditions like gestational diabetes. All calculations are performed locally without an internet connection.
- Extreme prematurity calculator
- VBAC success calculators
- Down Syndrome risk assessment
- Gestational diabetes insulin calculation
- CCAMs CVR calculator
- Offline functionality
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Perinatal and obstetrical calculators derived from published data to help guide obstetrical providers in counseling patients. Calculators include: -Extreme prematurity calculator for fetuses 22-25 weeks gestational age -VBAC success calculator based on information available for counseling in the office setting -VBAC success calculator based on factors on admission including cervical exam -Assessment of risk of having a child with Down Syndrome -Insulin calculation for initiating insulin in a gestational diabetic -CVR calculator for CCAMs -MCA doppler MOM calculator -Umbilical artery doppler reference range calculator -Preterm VBAC calculator -Insulin adjustment for corticosteroids calculator DOES NOT REQUIRE INTERNET CONNECTION to use, all done locally on iPhone or iPad
PlexusMD Viewer
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PlexusMD Viewer is a fast, private DICOM viewer for iPhone and iPad, built by a radiologist for physicians who need to look at a study away from the workstation. YOUR LIBRARY • Open DICOM files, whole folders from a patient CD, or zip archives, from Files, AirDrop, Mail or any app • Studies stay in a library on your device, protected while it is locked • Rename studies, keep only the series you need, and anonymize cases for teaching • Anonymized studies sync to your other devices with iCloud READ LIKE AT THE WORKSTATION • Multiplanar reconstruction (MPR) with MIP, MinIP and average slabs • Up to four panes with reference lines and linked scrolling; compare with a prior study • Window/level by touch, CT presets, invert, zoom and pan • Cine playback with adjustable speed • Acquisition time on every image and a full DICOM tag viewer • PET with SUV, MIP and a hot colour scale • Compressed studies: JPEG, JPEG Lossless, JPEG 2000 and RLE MEASURE AND ANNOTATE • Length, angle, Cobb angle, ellipse, rectangle and freehand ROI (mean, SD, min, max, area) • HU probe, arrows, text notes, magnifier and calibration for plain films • Key images; measurements are kept with the study SHARE SAFELY • Share chosen series by link or email; patient details are removed on your device first • Links work for 120 minutes and can be removed at any time • Save a study someone shared with you to your own library • Export an anonymized zip or an image PRIVATE BY DESIGN • No account, no ads, no tracking • Images are processed on your device; nothing is uploaded unless you share a study by link • Studies with patient details never go to iCloud PlexusMD Viewer is a viewing and reference tool. It is not a medical device and is not intended for diagnosis.
Screenshots
Verdict
The clearest difference is update cadence: PlexusMD Viewer at every 2 days against Perinatal Calculators's monthly. Perinatal Calculators's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Perinatal Calculators ships an update monthly, PlexusMD Viewer every 2 days. The most recent releases landed on September 24, 2026 and October 11, 2026 respectively.
| Parameter | Perinatal Calculators | PlexusMD Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | David Deschamps | Dermatological Beauty LLC |
In-app purchases
Perinatal Calculators
No in-app purchases
PlexusMD Viewer
No in-app purchases
Questions
Is Perinatal Calculators free?
Is PlexusMD Viewer free?
Do Perinatal Calculators or PlexusMD Viewer have ads?
Which is updated more often, Perinatal Calculators or PlexusMD Viewer?
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