# The OB Wheel Pro 7 — user reviews > 17 indexed App Store user reviews of The OB Wheel Pro 7 by Don Miller, rated 4.00/5 from 5 ratings. - Source: https://appshunter.io/ios/app/the-ob-wheel-pro-7/id730081554/reviews - App overview in markdown: https://appshunter.io/ios/app/the-ob-wheel-pro-7/id730081554.md - Rating breakdown: 5★ 3 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 1 ## Most critical reviews (10 lowest-rated) ### 1/5 — Nao entrega o que promete *2024-04-30* Nao possui calculo da IG pelo USG! Nao consigo contato com a empresa para solucionar o problema! ### 1/5 — Muito ruim *2021-09-18* Não calcula pela 1ª ultrassom, mto complexo…um desperdício… ### 1/5 — Waste of money *2021-01-05* I work at an OB clinic and purchased this to use on my watch. It will not open. Complete waste of money. ### 1/5 — Incompleto e cheio de bugs *2017-09-29* Não permite cálculo de idade gestacional baseada na 1ª Ultrassonografia. Sempre dá Bug no cálculo de IMC quando a altura é superior a 180cm. ### 1/5 — Ruim *2016-02-16* Não calcula a IG pelo US, medidas em polegadas e libras.... não vale a pena! ### 1/5 — Péssimo *2014-09-19* É muito bonito, mas não calcula idade gestacional pelo ultrassom. ### 2/5 — Not for docs *2014-01-14* Doesn't let you store multiple patients ### 3/5 — App on the apple watch *2021-01-19* Good app on iphone, but the app did not work on the apple watch. And I buy this app to calculate due date on the go on my apple watch. ### 3/5 — Não funciona no IOS 9 *2015-09-17* Bom aplicativo, mas não está funcionando no IOS 9. ### 3/5 — Precisa aprimorar *2015-08-30* Não possui a possibilidade de calcular pela USG ## Most praised reviews (7 highest-rated) ### 5/5 — Essencial na prática diária. *2025-01-05* Com um pouco de treino, extremamente intuitivo e rápido, definitivo para ajudar em atendimento obstétrico de urgência, ambulatorial, ultrassonografia, cardiotocografia. Meu aplicativo padrão de cálculo de idade gestacional, único que calcula com facilidade a IG em determinada data, com extrema precisão. Parabéns! ### 5/5 — Amazing *2019-03-31* I love your app and I use it everyday. Thank you. I was waiting for this update to use in my iPhone X. Maybe you could update the Apple Watch app too to take advantage of the big screen. Thank you. ### 5/5 — Good app *2019-03-31* Update.... not sorry for what I said three years ago, but sorry I never updated my review. It works great now and I use it all the time. **Developer response:** This review refers to a previous version before Apple allowed developers to even access the Digital Crown. After Apple allowed developer access to the Digital Crown, this app was updated to 2.0 in late 2015. As far as we can tell by looking at competitors' descriptions, The OB Wheel Pro 7 is the ONLY gestational age calculator that comes with an Apple Watch application. ### 5/5 — Nice Interface *2014-03-17* I'm a resident and do a lot of prenatal care. This is my favorite OB wheel app. The features are great and it's the only one I could find that has an iOS 7 style interface. ### 4/5 — Doesnt open on apple watch *2020-10-06* I work as an RN in a womens health clinic and have been using this app during my time here. Its so easy to use and saves so much time when I chart expecting mothers. The only problem is that it seems it isn’t compatible with my watch anymore and when i try to open the app, all I see is a spinning wheel. Otherwise I loved this app when i was able to use it! ### 4/5 — Keeps cutting out on Bmi screen *2018-12-05, version 2.0* Every time I try to work out a client’s BMI it keeps cutting out. Have tried installing it but still keeps happening. Please advise ### 4/5 — Dates *2017-01-31, version 2.0* It would be helpful if you could extend the dates to include term plus 12 or 41 plus 5 for induction dates --- *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.*