Obstetrical Calculator vs Perinatal Calculators
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Obstetrical Calculator
This medical application provides essential calculations for obstetrics. It serves as a clinical support tool, but all results require confirmation by a healthcare professional. It is not a replacement for professional medical judgment.
- Obstetrical calculations
- Clinical support tool
- Requires professional confirmation
- Supports iOS devices
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Obstetrical Calculator updates for ios *.02 All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. Neither expresoweb.com nor any other party involved in the preparation or publication of this site shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material
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
Screenshots
Verdict
The clearest difference is in-app purchases: Perinatal Calculators at none against Obstetrical Calculator's 4. Perinatal Calculators also leads on ads (none vs shown) and update cadence (monthly vs every 20 months). On price, device support and iOS requirement 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. Obstetrical Calculator sells 4 one-off in-app purchases. Perinatal Calculators asks for nothing beyond the download.
Obstetrical Calculator ships an update every 20 months, Perinatal Calculators monthly. The most recent releases landed on November 1, 2026 and September 24, 2026 respectively.
| Parameter | Obstetrical Calculator | Perinatal Calculators |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 20 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Manuel Posadas | David Deschamps |
Customer experience
Obstetrical Calculator
Perinatal Calculators
In-app purchases
Obstetrical Calculator
- Give a little$0.99
- Remove Advertisements$0.99
- Give a lot$4.99
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- Make my day$9.99
Perinatal Calculators
No in-app purchases
Questions
Is Obstetrical Calculator free?
Is Perinatal Calculators free?
Do Obstetrical Calculator or Perinatal Calculators have ads?
Which is updated more often, Obstetrical Calculator or Perinatal Calculators?
Other comparisons
