GestAge vs OB Calc (cloud)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GestAge
This medical app assists healthcare professionals and pregnant individuals in accurately calculating due dates and gestational age. It provides essential tools for managing pregnancy timelines.
- Calculate due date
- Calculate gestational age
- Pregnancy timeline management
- Tools for healthcare professionals
- Tools for pregnant women
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Gynaecologists, midwives, general practitioners, medecine students, nurses and above all pregnant women, this software easily calculates the due date and the gestational age during a pregnancy.
OB Calc (cloud)
This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.
- LMP, EDC, Ultrasound, CRL, and IVF calculations
- Customizable test date ranges
- Cross-device data syncing
- PDF report generation
- Save individual patient data
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While similar to a pregnancy wheel, OB Calc (cloud) is specifically designed by an obstetrician, for obstetricians. Finally obstetricians have an efficient and simple method to calculate the important test date windows for patients. CALCULATION METHODS • Last Menstrual Period (LMP) • Expected Delivery Date (EDC) • Sonogram Date and Fetal Age (Sonogram) • Crown Rump Length (CRL) • In Vitro Fertilization (IVF) Try the app for free for 7 days. A low monthly autorenewable subscription gives users access to premium features such as all calculation methods and saving of individual patient data. You can reach the developer directly at support@inpocketsolutions.com FEATURES • LMP, EDC, Ultrasound, CRL and IVF Method Calculations • Customize up to 15 tests, with date ranges • Data synced across multiple devices • Generate a PDF file • Save individual patient data CRL data reference : https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.7654 Terms & Conditions: https://inpocketsolutions.com/terms ** Disclaimer Remember to test out the app on your specific device to ensure calculations are verified to your expectation.
Screenshots
Verdict
The clearest difference is review sentiment: GestAge at 81% against OB Calc (cloud)'s 0%. GestAge also leads on iOS requirement (13.0 vs 18.0). OB Calc (cloud)'s advantage is rating (5.0 vs 2.0) and ads (none vs shown). On price, ratings volume, update cadence 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
Both are free to download. GestAge sells 2 one-off in-app purchases and OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
OB Calc (cloud) holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews complicate that: 81% of GestAge's written reviews are positive against 0% of OB Calc (cloud)'s, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on September 21, 2026.
| Parameter | GestAge | OB Calc (cloud) |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 81.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 | 5 — better |
| Update frequency | Every 3 months | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 23 MB | 14 MB |
| Age rating | 17+ | 4+ |
| Developer | J. Verchere | Glen Botha |
Customer experience
GestAge
OB Calc (cloud)
In-app purchases
GestAge
- Ultrasound scan tools$0.99
- Just get rid of the ads !$9.99
OB Calc (cloud)
- Monthly Subscription$2.991 Month
- Premium (Annual)$29.991 Year
Questions
Is GestAge free?
Is OB Calc (cloud) free?
Which has better reviews, GestAge or OB Calc (cloud)?
Do GestAge or OB Calc (cloud) have ads?
Which is updated more often, GestAge or OB Calc (cloud)?
Other comparisons
