OB Wheel (Pregnancy calculator)

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Offers in-app purchases

The OB Wheel app is newly available as a Progressive Web App.
https://obwheel.quartertone.net

This Google Play Store version will be depreciated soon.
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Multi-function pregnancy calculator.

Calculate dates of pregnancy:
-Last menstrual period (LMP)
-Estimated date of conception
-Weeks gestational age (WGA)
-WGA obtained by ultrasound
-Dating by IVF Embryo transfer
-Calculate gestation by Crown-Rump length
-Estimated due date (EDC)
-"Time Machine" mode can calculate "How many weeks will patient be on xxxx date?" and "When will patient be xx weeks gestation?"

Features still present, but no longer supported:
-Store multiple patients for easy retrieval
-Adjust length of cycle and luteal phase
-Full Help pages available
-Include extra notes in patient data

Please note: This app may be used for personal tracking purposes, but it is primarily meant to be a clinical tool for professional healthcare workers.

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***IMPORTANT NOTE***
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This app calculates exactly 280 days (40 weeks) from LMP to EDC, and accordingly for any date in between. Please note that the paper/plastic wheels used by obstetricians or ultrasound technicians are inherently inaccurate. Different pregnancy wheels may vary by as much as 3 or 4 days. Please keep this in mind when comparing the values obtained here to those given in clinics/hospitals.


Key words: pregnancy calculator, obstetrics, obgyn, obwheel, ob wheel
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What's New

Update v9.1 (2016-07-03)
- NEW! - added Crown-rump length calculator (for reference only; does not calculate dates).
- PRO app will be phased out eventually and made into a purchase key.
- Patient saver will remain in app, but will not be supported (for now)
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Additional Information

Updated
July 4, 2016
Size
1.3M
Installs
500,000+
Current Version
9.1 (2016-07-03)
Requires Android
2.1 and up
Content Rating
Everyone
Interactive Elements
Digital Purchases
In-app Products
$0.99 - $2.85 per item
Permissions
Offered By
Quartertone
Developer
PO Box 1511 Northampton, MA 01060
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