OB Calc (cloud) Downloads & RevenueOB Calc (cloud) · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperGlen Botha
CategoryMedical
PriceFree
Released
Rating★ 4.0 (2)
Version2.10.1
Age rating4+
First seen by us
8 Oct 2026
8 Oct 2026Installs (est.)1k+ worldwide
📈Dropped out of every chart we track📈Entered the top 100🆕First spotted by AppInsider📦Version 2.10.1🆕Released on the App Store
Full timeline · 8 events
- 📈OB Calc (cloud) dropped out of every chart we trackLast seen 5 Nov
- 📈OB Calc (cloud) entered the top 100Top Grossing · Medical · BR
- 📈OB Calc (cloud) charting in a new countryBrazil
- 📈OB Calc (cloud) entered the top 100Top Grossing · Medical · IT
- 📈OB Calc (cloud) charting in a new countryItaly
- 🆕OB Calc (cloud) first spotted by AppInsider#67 in Top Grossing · Medical · India
- 📦OB Calc (cloud) version 2.10.1Support for the latest Liquid Glass features
- 🆕OB Calc (cloud) released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.0 ★
2 ratings
Measured
OB Calc (cloud) on the App Store
App details
App ID
1495610465
Publisher
Glen Botha
On the store since
Jan 2020
6 years on the store
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
5
EN FR DE PT ES
Size
15 MB
OB Calc (cloud) downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.0 ★
2 ratings
Measured
Ratings
2
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Medical apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About OB Calc (cloud)
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 [email protected]
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.
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 [email protected]
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.
Latest updates
2.10.1
Support for the latest Liquid Glass features
