Merwins EPV Calculator19 - App Store
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Publisher Description
Merwin’s EPV Calculator calculates the volume of a spherical cap from an imaginary cross section through the middle of the cap.
Using a complex polynomial, Merwin’s equation utilizes the width, height and thickness measurements of the cross-section of a spherical cap.
To demonstrate potential utility, an illustrative example of normative curves, including the 10th, 50th and 90th percentile lines, as well as derived percentile, is generated to demonstrate how this equation could be used in real-world practice. The example curve presented has no utility beyond that of an illustrative example. In the example presented data is collected in the form of lengths in centimeters and time as weeks and days.
Key Features:
- Enter the sample name and time in weeks and days
- Easily enter width, height and thickness of the spherical cap
- Calculates the spherical cap volume immediately using mathematical modeling
- The volume result is immediately plotted on a sample normative curve, with normal values shown in green and alert values shown in red
- The volume result and normative curves can be viewed in landscape mode for a larger plot
- Results can be easily shared using Apple’s standard share tool
- Data can be easily updated and recalculated, or cleared for a new sample
- Calculates placenta weight percentile after delivery, and if birth weight is known, the birth weight to placenta weight ratio.
Version History Fixes issue with the normative curves graph not showing properly on device rotation 19 Sep 11 Support for iOS 18 17 09/12/2024 Expanded EPV percentiles 16 01/13/2024 Adjustment to decimal display for BW%, PW% and BW:PW ratio fields 15 11/07/2023 Adjustments to %ile display 14 11/02/2023 Birth weight percentile calculations 13 10/31/2023 Updated for iOS 17 and iPadOS 17 12 09/26/2023 Buf fixes 11 10/13/2022 Updated application name 10 03/09/2022 Now calculates the weight percentile of the placenta following delivery, and if the birth weight is known, the birth weight to placenta weight ratio. 9 02/08/2022 State Restoration is now supported 8 06/29/2020 Support for multiple windows on iPad, and Mac Catalyst 7 06/27/2020 * Fixes issue with text in the app credits
* Updates model with newer percentile data 6 01/21/2020 Fixes for iOS 13 5 09/24/2019 Updated for iOS 12 4 04/17/2019 Updated normative curves 1.0.1 01/09/2016 1.0 12/09/2015
About Merwins EPV Calculator
The company that develops Merwins EPV Calculator is Harperfection Corporation. The latest version released by its developer is 19.
To install Merwins EPV Calculator on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-13 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Merwins EPV Calculator as malware if the download link is broken.
How to install Merwins EPV Calculator on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the Merwins EPV Calculator is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After Merwins EPV Calculator is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 19
posted on 2026-10-13
Version History Fixes issue with the normative curves graph not showing properly on device rotation 19 Sep 11 Support for iOS 18 17 09/12/2024 Expanded EPV percentiles 16 01/13/2024 Adjustment to decimal display for BW%, PW% and BW:PW ratio fields 15 11/07/2023 Adjustments to %ile display 14 11/02/2023 Birth weight percentile calculations 13 10/31/2023 Updated for iOS 17 and iPadOS 17 12 09/26/2023 Buf fixes 11 10/13/2022 Updated application name 10 03/09/2022 Now calculates the weight percentile of the placenta following delivery, and if the birth weight is known, the birth weight to placenta weight ratio. 9 02/08/2022 State Restoration is now supported 8 06/29/2020 Support for multiple windows on iPad, and Mac Catalyst 7 06/27/2020 * Fixes issue with text in the app credits
* Updates model with newer percentile data 6 01/21/2020 Fixes for iOS 13 5 09/24/2019 Updated for iOS 12 4 04/17/2019 Updated normative curves 1.0.1 01/09/2016 1.0 12/09/2015
version 19
posted on 2026-09-18
Version History Fixes issue with the normative curves graph not showing properly on device rotation 19 6d ago Support for iOS 18 17 09/12/2024 Expanded EPV percentiles 16 01/13/2024 Adjustment to decimal display for BW%, PW% and BW:PW ratio fields 15 11/07/2023 Adjustments to %ile display 14 11/02/2023 Birth weight percentile calculations 13 10/31/2023 Updated for iOS 17 and iPadOS 17 12 09/26/2023 Buf fixes 11 10/13/2022 Updated application name 10 03/09/2022 Now calculates the weight percentile of the placenta following delivery, and if the birth weight is known, the birth weight to placenta weight ratio. 9 02/08/2022 State Restoration is now supported 8 06/29/2020 Support for multiple windows on iPad, and Mac Catalyst 7 06/27/2020 * Fixes issue with text in the app credits
* Updates model with newer percentile data 6 01/21/2020 Fixes for iOS 13 5 09/24/2019 Updated for iOS 12 4 04/17/2019 Updated normative curves 1.0.1 01/09/2016 1.0 12/09/2015
version 17
posted on 2026-09-11
Version History Support for iOS 18 17 09/12/2024 Expanded EPV percentiles 16 01/13/2024 Adjustment to decimal display for BW%, PW% and BW:PW ratio fields 15 11/07/2023 Adjustments to %ile display 14 11/02/2023 Birth weight percentile calculations 13 10/31/2023 Updated for iOS 17 and iPadOS 17 12 09/26/2023 Buf fixes 11 10/13/2022 Updated application name 10 03/09/2022 Now calculates the weight percentile of the placenta following delivery, and if the birth weight is known, the birth weight to placenta weight ratio. 9 02/08/2022 State Restoration is now supported 8 06/29/2020 Support for multiple windows on iPad, and Mac Catalyst 7 06/27/2020 * Fixes issue with text in the app credits
* Updates model with newer percentile data 6 01/21/2020 Fixes for iOS 13 5 09/24/2019 Updated for iOS 12 4 04/17/2019 Updated normative curves 1.0.1 01/09/2016 1.0 12/09/2015
version 17
posted on 2024-09-12
Sep 12, 2024
Version 17
Support for iOS 18
version 17
posted on 2024-09-12
Support for iOS 18
version 16
posted on 2024-01-13
Jan 13, 2024
Version 16
Expanded EPV percentiles
version 15
posted on 2023-11-07
Nov 7, 2023
Version 15
Adjustment to decimal display for BW%, PW% and BW:PW ratio fields
version 12
posted on 2023-09-26
Sep 26, 2023
Version 12
Updated for iOS 17 and iPadOS 17
version 11
posted on 2022-10-13
Oct 13, 2022
Version 11
Buf fixes
Disclaimer
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