Prego OB Wheel vs OB Calc (cloud)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prego OB Wheel
This app is a simple obstetrical calculator and patient tracker. It helps healthcare professionals quickly determine pregnancy dates, gestational age, and track patient progress. Save patient information and notes for easy reference.
- Calculate pregnancy dates (LMP, ultrasound, conception, EDD)
- Determine gestational age
- Track pregnancies
- Track postpartum patients
- Save patient notes (Rh, GBS, GTPAL)
- List upcoming deliveries
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Quick, accurate, easy-to-use obstetrical date calculator and patient tracker designed and developed by family physician Dr. Émilie Coudière, MD. Calculate pregnancy dates from LMP, ultrasound, conception, or EDD. Determine gestational age as of any date. Track pregnancies and postpartum patients. QUICKLY CALCULATE • Pregnancy dates from LMP, ultrasound, conception, or EDD. • Patient's gestational age as of today. • Gestational age on future date — i.e. How many weeks will my patient be on June 15th? • Date of future gestational age — i.e. When will my patient be 28 weeks? QUICKLY SAVE • Patients' dates by simply adding a name. • Add quick notes to patients — i.e. Rh, GBS, GTPAL, etc. • Add delivery date to track postpartum patients. QUICKLY REFERENCE • Previously saved patients. • List of upcoming deliveries. • List of postpartum patients. That's it. One screen. Super simple. Enjoy! Enjoying Prego OB Wheel? Please leave a review! It means a lot to us and helps others discover the app. Thanks and take care! * Terms of use are available at https://jeffreyfulton.carrd.co
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
Prego OB Wheel and OB Calc (cloud) both sit at 4.9 stars, but that hides the real split: 66% of Prego OB Wheel's written reviews are positive against 0% of OB Calc (cloud)'s. Prego OB Wheel also leads on in-app purchases (none vs 2) and ratings volume (325 vs 5). OB Calc (cloud)'s advantage is price (Free vs $4.99). On rating, update cadence, ads 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
OB Calc (cloud) is free to download; Prego OB Wheel costs $4.99 up front. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. Prego OB Wheel asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Prego OB Wheel against 5.0 for OB Calc (cloud). That said, the two scores are not equally well evidenced: Prego OB Wheel has 325 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 66% of Prego OB Wheel's written reviews are positive against 0% of OB Calc (cloud)'s.
Prego OB Wheel ships an update every 2 months, OB Calc (cloud) every 3 months. Both last shipped on October 29, 2026.
| Parameter | Prego OB Wheel | OB Calc (cloud) |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.9 (325 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 65.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 325 — better | 5 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeffrey Fulton | Glen Botha |
Customer experience
Prego OB Wheel
OB Calc (cloud)
Bugs and requests
Prego OB Wheel
Reported bugs
8 issues- Lag in loading patients list
- Text on screen doesn't appear properly
- Last update ruined functionality
- Cannot check simple EDD
- No reset unless you save
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- US date input for gestation is fiddly to undo
- New version not in French
- Gives false EDD
Requested features
7 requests- Search tab for patients
- Separate tabs for antenatal and postnatal patients
- Cloud function for syncing between devices
- Option to calculate gestational age by ultrasound
- Highlight today's date on date wheels
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- Option for Spanish language
- Handy, classy, and mistake-free update
OB Calc (cloud)
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Prego OB Wheel
No in-app purchases
OB Calc (cloud)
- Monthly Subscription$2.991 Month
- Premium (Annual)$29.991 Year
Questions
Is Prego OB Wheel free?
Is OB Calc (cloud) free?
Which has better reviews, Prego OB Wheel or OB Calc (cloud)?
Do Prego OB Wheel or OB Calc (cloud) have ads?
Which is updated more often, Prego OB Wheel or OB Calc (cloud)?
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