# VBAC Calculator - Predict success rates for vaginal birth after cesarean > Predicts vaginal birth after cesarean success rates using medical models. (iPhone/iPad app by Better Leap Media.) - Source: https://appshunter.io/ios/app/vbac-calculator-predict-success-rates-for-vaginal-birth-after-cesarean/id1113088441 (this page in markdown: same URL + `.md`) - Developer: [Better Leap Media](https://appshunter.io/developer/440954625) - Category: Medical, Health & Fitness - Price: $2.99 - Rating: 4.50/5 from 10 App Store ratings · 4 written reviews indexed - Age rating: 12+ - Requires: iOS 9.3 · 11 MB - Languages: American English - Released: 2016-05-17 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/vbac-calculator-predict-success-rates-for-vaginal-birth-after-cesarean/id1113088441/reviews.md ## What is VBAC Calculator? The VBAC Calculator is a convenient tool for predicting the success rate of a vaginal birth after cesarean (VBAC). The app consists of 3 calculators which use patient-specific data in order to generate a predictive score. The "Standard" calculator uses the widely-used predictive model published in Grobman, William A., et al., “Development of a nomogram for prediction of vaginal birth after cesarean delivery,” Obstetrics & Gynecology, volume 109(4), pp. 806-812, 2007. This predictive model uses pre-pregnancy BMI and prior medical history to predict VBAC success rates. It can be used at any time during the term of pregnancy during a clinical visit. The "Standard + Admission Factors" calculator is a variant of the 2007 Grobman prediction method as found in the following publication: Grobman William A., et al., “Does information available at the time of admission for delivery improve prediction of successful birth after cesarean?” American Journal of Perinatology, volume 26(10), pp.693-701, 2009. This model uses additional information at time of hospital admission to predict VBAC success rates. Lastly, the "Simple" calculator also uses information at time of admission (same as the "Standard + Admissions Factors" calculator). The source for this predictive calculator is: Metz, Tori D., et al., “Simple, validated vaginal birth after cesarean delivery prediction model for use at the time of admission,” Obstetrics & Gynecology, volume 122(3), pp.571-578, 2013. This is a straight-forward prediction method that combines BMI and age information with the well-known Bishop Score calculation to determine VBAC success. Please note that is app is provided solely for educational purposes and should not be used in lieu of sound, professional medical guidance. ## Key features - Predict VBAC success rates - Standard prediction model (Grobman 2007) - Admission factors calculator (Grobman 2009) - Simple prediction model (Metz 2013) - Uses BMI, medical history, and Bishop Score ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/vbac-calculator-predict-success-rates-for-vaginal-birth-after-cesarean/id1113088441/reviews.md ### 3/5 — Needs update *2021-01-28* This app is a great help in counseling patients. Needs to be updated to be consistent with recent literature, especially removing race and ethnicity from the algorithm. ### 5/5 — Very useful. *2020-12-02* I use this app all the time to estimate patient success rate for trial of labor after C-section. It certainly helps women have a clearer understanding of their individual likelihood of success. ### 5/5 — User friendly *2019-05-09* Et validé selon le dernier GESTA. ### 5/5 — Great app and easy to use *2017-01-07* Great app. Very straightforward to use, with a nice, intuitive interface. You can easily and quickly calculate the percent chance of a successful VBAC when counseling patients in the office. In addition, if you admit a patient in labor, you can use admission factors, like their cervical exam, to further refine their chance of success. Love it. ## Frequently asked questions about VBAC Calculator ### What is VBAC Calculator? VBAC Calculator is a medical app designed to predict the success rates of a vaginal birth after a cesarean section. It utilizes three different calculators based on established medical research to provide predictive scores. ### How much does VBAC Calculator cost? VBAC Calculator is a paid app and costs $2.99. It does not feature in-app purchases or advertisements. ### What medical models does VBAC Calculator use? VBAC Calculator uses the Grobman 2007 model, a variant of the Grobman 2009 model incorporating admission factors, and the Metz 2013 simple prediction model. ### What information is needed for VBAC Calculator? The calculators use patient-specific data such as pre-pregnancy BMI, prior medical history, admission factors, age, and the Bishop Score to generate predictions. ### Is VBAC Calculator suitable for all ages? VBAC Calculator has an age rating of 12+. It is intended for educational purposes and should not replace professional medical advice. ### What devices support VBAC Calculator? VBAC Calculator is available for iPhone and iPod devices. It was last updated on June 3, 2016, with version 1.1. ### Does VBAC Calculator provide medical advice? No, VBAC Calculator is provided solely for educational purposes. It should not be used in lieu of sound, professional medical guidance from a healthcare provider. ### What is the user sentiment for VBAC Calculator? VBAC Calculator has received positive user feedback, indicated by its rating of 4.5 stars from 10 ratings. ## Version history (last 2 releases) ### 1.1 — 2016-06-03 This update from Apple will improve the functionality of this app. No new features are included. UI improvements and bug fixes. ### 1.0 — 2016-05-17 No release notes. ## Apps similar to VBAC Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Fetal Heart Rate 5-tier](https://appshunter.io/ios/app/fetal-heart-rate-5-tier/id529917070) | 4.4 (8) | $6.99 | Medical | | [Family Medicine Study Guide](https://appshunter.io/ios/app/family-medicine-study-guide/id1072407249) | 4.8 (26) | $13.99 | Medical | | [Well Woman Visit App by NPWH](https://appshunter.io/ios/app/well-woman-visit-app-by-npwh/id871158138) | 5.0 (4) | Free | Medical | | [Guide to Clinical Midwifery](https://appshunter.io/ios/app/guide-to-clinical-midwifery/id1462064341) | 4.6 (87) | Free | Medical | | [Bilirubin: Bilitool Bili Tool](https://appshunter.io/ios/app/bilirubin-bilitool-bili-tool/id1502436998) | 4.9 (243) | $9.99 | Medical | | [GynZone - OBGYNs and midwives](https://appshunter.io/ios/app/gynzone-obgyns-and-midwives/id1487641959) | 3.0 (2) | Free | Medical | ## More apps by Better Leap Media - [Oral Contraceptives](https://appshunter.io/ios/app/oral-contraceptives/id440954621) - [Bishop Score Calculator](https://appshunter.io/ios/app/bishop-score-calculator/id1087924918) - [Apgar Score - Quickly test the health of a newborn baby](https://appshunter.io/ios/app/apgar-score-quickly-test-the-health-of-a-newborn-baby/id1090177364) - [Fetal Weight Calculator - Estimate Weight and Growth Percentile](https://appshunter.io/ios/app/fetal-weight-calculator-estimate-weight-and-growth-percentile/id1134152626) All apps by Better Leap Media: https://appshunter.io/developer/440954625 ## Related topics [vbac calculator](https://appshunter.io/ios/topics/vbac-calculator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*