---
title: "Perfect OB Wheel - Reviews, Revenue and Downloads in Canada | Apple App Store"
description: "Simple, fast, yet more thorough than any other pregnancy wheel available for the iPhone, Perfect OB Wheel is better than just a replacement for your trusty paper wheel.  Here's why Perfect OB Wheel is"
---

# Perfect OB Wheel — Canada
> Obstetrics calculator

![Perfect OB Wheel App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/41/2b/2f/412b2f1c-70c6-4628-2aa8-815bc5602988/AppIcon-0-1x_U007emarketing-0-6-0-85-220.png/434x0w.png)

**Developer:** [Evan Schoenberg, M.D](https://apptail.io/developer/evan-schoenberg-md-Euj) (United States)
**Category:** Medical
**Rating:** 4.9/5 (475 ratings)
**Price:** Free
**Bundle ID:** com.regularrateandrhythm.PerfectOBWheel
**Store:** Apple App Store
**Country:** Canada
**Version:** 58 (released 2021-10-16)
**Original Release:** 2008-10-16
**Languages:** German, Arabic, English, French, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Chinese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id293656711)
**AppTail Page:** [https://apptail.io/app/perfect-ob-wheel-KXZd/canada](https://apptail.io/app/perfect-ob-wheel-KXZd/canada)

## Perfect OB Wheel Description
Simple, fast, yet more thorough than any other pregnancy wheel available for the iPhone, Perfect OB Wheel is better than just a replacement for your trusty paper wheel.

Here's why Perfect OB Wheel is your best choice of gestational calculator:

 1) Input flexibility: Start with one of:
    • Last menstrual period (LMP)
    • Conception date
    • Estimated date of confinement/delivery (EDC)
    • Ultrasound dating: Number of weeks and days gestation as of a given date ("X Weeks").

 2) Input speed: Other wheels for the iPhone make you conform to them for entering your patient's information. Why not be able to choose based on how you are holding the phone and what else you are doing at the same time?
    • Use the numeric entry pad (0 3 3 0 2 0 0 8) and immediately see the results, OR
    • Spin the date wheel at the bottom of the screen and tap Next.

 3) Thorough results: All the information you would expect from a classic wheel, plus more:
   • Estimated Due Date
   • LMP Date
   • Conception Date
   • 1st Trimester End Date
   • 2nd Trimester End Date
   • Gestational Age
   • Conceptional Age
   • Expected Fetal Length based on standard fetal growth curves
   • Expected Fetal Weight based on standard fetal growth curves ("How much does my baby weigh, doctor?")

Results are relative to 'today' by default; this can be quickly changed to reflect any date by tapping the 'today' button and selecting a new date.

 4) Accurate results: Perfect OB Wheel provides exact dates and accounts for all calendar variance, including leap years. 

 5) Persistence: Perfect OB Wheel remembers the date and date type you last used and restores them when launched to streamline your workflow.

 6) Perfect OB Tracker upgrade: Available as an in-app purchase update, the Perfect OB Tracker lets you track any number of pregnancies, with at-a-glance due date and gestational age and one-tap access to all the data Perfect OB Wheel provides.  A  picture and text notes can be kept on each patient. Postpartum tracking is also available. Passcode locking is available for HIPAA compliance.

## Perfect OB Wheel Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/46/02/1a/46021a3d-419f-d1ea-90a9-68d64405a0b5/cc25da01-1c8a-4703-b936-9594577fb77d_1_iphone65_1.1-LMP.jpg/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/f6/7e/b4/f67eb486-512d-d3e1-0153-e72de24f4c0c/761f0f3b-8cba-49e4-86f0-40853eb998fe_2_iphone65_2.2-LMP_Results.jpg/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/3b/71/10/3b711093-d160-a4b1-2c20-310651ab34b9/68986376-1042-4c8b-89d9-d2862d181c70_3_iphone65_3.3-As_of_Date_Results.jpg/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/0a/65/50/0a6550c3-91ad-4c67-363e-5e43e426ae7d/3adc7b2f-1e7f-41a9-9b0e-0a4b9a817c7b_4_iphone65_4.4-X_Weeks.jpg/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/c0/ab/27/c0ab27d1-2ed1-b6cc-afeb-64e3fe530fe9/pr_source.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/ef/51/1b/ef511bd8-cadd-ea1a-cbeb-c4f3d6fd0474/pr_source.png/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/b3/0b/c8/b30bc894-f951-322d-d95b-bbc874c12e67/pr_source.png/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/36/2a/d7/362ad78b-fec4-2e12-8aec-9f07bc10242e/pr_source.png/1242x2688.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/58/9f/06/589f0651-e1d0-38c4-dec4-51db7760c6e9/pr_source.png/1242x2688.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/06/2d/da/062dda6f-8eab-35b3-269d-93a9aaac88ef/pr_source.png/1242x2688.png)

## Perfect OB Wheel Rating Breakdown in Canada
- 5 stars: 421 (89%)
- 4 stars: 46 (10%)
- 3 stars: 6 (1%)
- 2 stars: 2 (0%)
- 1 stars: 0 (0%)

## Perfect OB Wheel Reviews in Canada

### ****- "J'adore !"
Excellente application avec de récentes améliorations. Petits bugs actuellement avec la fonction "delivered today". Ce qui serait super serait de pouvoir partager des patientes entre collègues.
-- Mausau, 2019-02-17

### *---- "Crashing!!"
Wa working perfect till Past few days ,not opening,crashes immediately .fix pls
-- Fuad676, 2014-10-06

### ***** "Great"
I'm a medical student and this totally saved me on my ob rotation. Dating is super important for clinical reasons and this app is wonderful if you can't do the math in your head
-- Mharrich, 2013-09-09

### ***** "Easy to use"
Gives you simple to understand results and is easy to use
-- Klegris, 2013-06-14

### ***** "Great"
Really useful, im an obgyn resident and i use it all the Time
-- Nydz____2001, 2013-01-16

### ****- "Midwife"
I love this app and use it daily in my clinic. Just downloaded the upgrade however and the "today" button is not working. Hope it will be fixed soon!!
-- CSK.RM, 2012-12-13

### **--- "Perfect tracker not so perfect"
I love the idea and it would be very useful except that the tracker is stuck in edit mode and I can't add or change anything.
-- Aberdovey, 2012-10-12

### ***** "HD version please"
Quite useful, especially when faced with a dating ultrasound. Haven't seen other wheel apps capable of doing the same. An HD version for iPad would be wonderful.
-- TC Brian, 2012-07-03

### ****- "Très pratique"
Simple et facile à utiliser.
-- Nanou.ca, 2012-06-29

### ***** "Good app"
:)
-- stephcoyote, 2012-04-01

### ***** "Perfect wheel"
Very useful tool in family practice
-- Mansur Somani, 2012-03-26

### **--- "Dates"
Why does this keep changing the dates I put in?  It's quite frustrating. I have a busy practice and I bought this app. Can you fix it pls??? For example I put in december 2 2011 as the LMP and it always changes it to dec 1 2011. Same goes for every date. Pls fix it.
-- malferc, 2012-02-29

### ****- "Ob/GYN doctor"
Useful; I love "spinning the wheel". It certainly provides every date you might want; I wish the EDC and the GA today were more prominent; I find I have to search to see today's GA. This should be front & centre.
-- Momjenna, 2012-01-30

### ***** "Fantastic service"
Developer answered a small query within 30 min on Christmas eve. Wow that's great service!
-- wxq, 2011-12-24

### ****- "Love it!!"
I work in labor & delivery as a RN, this has become an important tool I use often!! I love it!!!
-- JennyB0125, 2011-11-09

### ***** "P"
Only preg calculator with option to enter ultrasound age and ultrasound date to get rest of dating info.
-- Mnroy, 2011-06-26

### *---- "Waste of money"
Not worth the price at all.  I can google this information. As an app it should be more interactive and offer more pregnancy information.
-- Tunapuna20, 2011-06-23

[View all Perfect OB Wheel reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Perfect OB Wheel In-App Purchases
| Item | Price |
|------|-------|
| Perfect OB Tracker | $6.99 |

## Perfect OB Wheel Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Romania | Medical | #4 |
| Top Paid | Philippines | Medical | #5 |
| Top Paid | Dominican Republic | Medical | #14 |
| Top Paid | Argentina | Medical | #18 |
| Top Paid | Thailand | Medical | #22 |
| Top Paid | Kuwait | Medical | #22 |
| Top Paid | South Africa | Medical | #23 |
| Top Paid | Mexico | Medical | #24 |
| Top Paid | Chile | Medical | #27 |
| Top Paid | Lebanon | Medical | #28 |
| Top Paid | Portugal | Medical | #28 |
| Top Paid | Israel | Medical | #29 |
| Top Paid | New Zealand | Medical | #30 |
| Top Paid | Russia | Medical | #30 |
| Top Paid | Malaysia | Medical | #31 |
| Top Paid | Greece | Medical | #32 |
| Top Paid | Canada | Medical | #34 |
| Top Paid | Poland | Medical | #34 |
| Top Paid | Nigeria | Medical | #34 |
| Top Paid | Indonesia | Medical | #37 |
| Top Paid | Italy | Medical | #38 |
| Top Paid | Pakistan | Medical | #40 |
| Top Paid | Saudi Arabia | Medical | #41 |
| Top Paid | Egypt | Medical | #44 |
| Top Paid | Brazil | Medical | #44 |
| Top Paid | Hong Kong SAR China | Medical | #44 |
| Top Paid | Colombia | Medical | #45 |
| Top Paid | Peru | Medical | #46 |
| Top Paid | Türkiye | Medical | #50 |
| Top Paid | Ireland | Medical | #50 |
| Top Paid | Ukraine | Medical | #53 |
| Top Paid | Hungary | Medical | #57 |
| Top Grossing | Romania | Medical | #61 |
| Top Paid | India | Medical | #69 |
| Top Paid | United Arab Emirates | Medical | #69 |
| Top Paid | Spain | Medical | #70 |
| Top Grossing | Philippines | Medical | #73 |
| Top Paid | Vietnam | Medical | #81 |
| Top Paid | United States | Medical | #90 |
| Top Paid | Australia | Medical | #93 |
| Top Paid | France | Medical | #97 |
| Top Paid | Denmark | Medical | #99 |
| Top Paid | Singapore | Medical | #105 |
| Top Paid | United Kingdom | Medical | #112 |
| Top Paid | Romania | Overall | #113 |
| Top Paid | South Korea | Medical | #118 |
| Top Paid | Belgium | Medical | #120 |
| Top Paid | Ecuador | Medical | #128 |
| Top Paid | Netherlands | Medical | #129 |
| Top Paid | Taiwan | Medical | #140 |
| Top Paid | Japan | Medical | #151 |
| Top Paid | Austria | Medical | #153 |
| Top Paid | Azerbaijan | Medical | #164 |
| Top Paid | China | Medical | #167 |
| Top Paid | Switzerland | Medical | #170 |
| Top Paid | Norway | Medical | #171 |
| Top Paid | Philippines | Overall | #198 |
| Top Paid | Czechia | Medical | #206 |
| Top Paid | Sweden | Medical | #213 |
| Top Paid | Germany | Medical | #221 |
| Top Paid | Chile | Overall | #303 |
| Top Paid | Finland | Medical | #328 |
| Top Paid | Mexico | Overall | #358 |
| Top Paid | Dominican Republic | Overall | #416 |

## Perfect OB Wheel Discovered Keywords
- perfect ob wheel

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## Perfect OB Wheel Available In
- [United States](https://apptail.io/app/perfect-ob-wheel-KXZd/united-states)
- [Brazil](https://apptail.io/app/perfect-ob-wheel-KXZd/brazil)
- [Canada](https://apptail.io/app/perfect-ob-wheel-KXZd/canada)
- [Mexico](https://apptail.io/app/perfect-ob-wheel-KXZd/mexico)
- [Chile](https://apptail.io/app/perfect-ob-wheel-KXZd/chile)
- [Italy](https://apptail.io/app/perfect-ob-wheel-KXZd/italy)
- [Australia](https://apptail.io/app/perfect-ob-wheel-KXZd/australia)
- [United Kingdom](https://apptail.io/app/perfect-ob-wheel-KXZd/united-kingdom)
- [South Africa](https://apptail.io/app/perfect-ob-wheel-KXZd/south-africa)
- [Thailand](https://apptail.io/app/perfect-ob-wheel-KXZd/thailand)
- [Philippines](https://apptail.io/app/perfect-ob-wheel-KXZd/philippines)
- [Russia](https://apptail.io/app/perfect-ob-wheel-KXZd/russia)
- [Argentina](https://apptail.io/app/perfect-ob-wheel-KXZd/argentina)
- [Colombia](https://apptail.io/app/perfect-ob-wheel-KXZd/colombia)
- [New Zealand](https://apptail.io/app/perfect-ob-wheel-KXZd/new-zealand)
- [Saudi Arabia](https://apptail.io/app/perfect-ob-wheel-KXZd/saudi-arabia)
- [Türkiye](https://apptail.io/app/perfect-ob-wheel-KXZd/turkey)
- [Portugal](https://apptail.io/app/perfect-ob-wheel-KXZd/portugal)
- [Romania](https://apptail.io/app/perfect-ob-wheel-KXZd/romania)
- [Poland](https://apptail.io/app/perfect-ob-wheel-KXZd/poland)
- [Spain](https://apptail.io/app/perfect-ob-wheel-KXZd/spain)
- [India](https://apptail.io/app/perfect-ob-wheel-KXZd/india)
- [Ireland](https://apptail.io/app/perfect-ob-wheel-KXZd/ireland)
- [Greece](https://apptail.io/app/perfect-ob-wheel-KXZd/greece)
- [Israel](https://apptail.io/app/perfect-ob-wheel-KXZd/israel)
- [Switzerland](https://apptail.io/app/perfect-ob-wheel-KXZd/switzerland)
- [Indonesia](https://apptail.io/app/perfect-ob-wheel-KXZd/indonesia)
- [Dominican Republic](https://apptail.io/app/perfect-ob-wheel-KXZd/dominican-republic)
- [Japan](https://apptail.io/app/perfect-ob-wheel-KXZd/japan)
- [Malaysia](https://apptail.io/app/perfect-ob-wheel-KXZd/malaysia)
- [France](https://apptail.io/app/perfect-ob-wheel-KXZd/france)
- [Austria](https://apptail.io/app/perfect-ob-wheel-KXZd/austria)
- [Hong Kong SAR China](https://apptail.io/app/perfect-ob-wheel-KXZd/hong-kong)
- [Kuwait](https://apptail.io/app/perfect-ob-wheel-KXZd/kuwait)
- [Peru](https://apptail.io/app/perfect-ob-wheel-KXZd/peru)
- [Pakistan](https://apptail.io/app/perfect-ob-wheel-KXZd/pakistan)
- [Germany](https://apptail.io/app/perfect-ob-wheel-KXZd/germany)
- [Croatia](https://apptail.io/app/perfect-ob-wheel-KXZd/croatia)
- [Vietnam](https://apptail.io/app/perfect-ob-wheel-KXZd/vietnam)
- [Ecuador](https://apptail.io/app/perfect-ob-wheel-KXZd/ecuador)
- [Netherlands](https://apptail.io/app/perfect-ob-wheel-KXZd/netherlands)
- [Sweden](https://apptail.io/app/perfect-ob-wheel-KXZd/sweden)
- [Egypt](https://apptail.io/app/perfect-ob-wheel-KXZd/egypt)
- [Hungary](https://apptail.io/app/perfect-ob-wheel-KXZd/hungary)
- [Sri Lanka](https://apptail.io/app/perfect-ob-wheel-KXZd/sri-lanka)
- [Norway](https://apptail.io/app/perfect-ob-wheel-KXZd/norway)
- [Singapore](https://apptail.io/app/perfect-ob-wheel-KXZd/singapore)
- [Bulgaria](https://apptail.io/app/perfect-ob-wheel-KXZd/bulgaria)
- [Belgium](https://apptail.io/app/perfect-ob-wheel-KXZd/belgium)
- [Taiwan](https://apptail.io/app/perfect-ob-wheel-KXZd/taiwan)
- [Ukraine](https://apptail.io/app/perfect-ob-wheel-KXZd/ukraine)
- [Slovakia](https://apptail.io/app/perfect-ob-wheel-KXZd/slovakia)
- [Nigeria](https://apptail.io/app/perfect-ob-wheel-KXZd/nigeria)
- [Cayman Islands](https://apptail.io/app/perfect-ob-wheel-KXZd/cayman-islands)
- [Algeria](https://apptail.io/app/perfect-ob-wheel-KXZd/algeria)
- [Azerbaijan](https://apptail.io/app/perfect-ob-wheel-KXZd/azerbaijan)
- [Armenia](https://apptail.io/app/perfect-ob-wheel-KXZd/armenia)
- [Denmark](https://apptail.io/app/perfect-ob-wheel-KXZd/denmark)
- [Latvia](https://apptail.io/app/perfect-ob-wheel-KXZd/latvia)
- [Belarus](https://apptail.io/app/perfect-ob-wheel-KXZd/belarus)
- [Bahrain](https://apptail.io/app/perfect-ob-wheel-KXZd/bahrain)
- [Lebanon](https://apptail.io/app/perfect-ob-wheel-KXZd/lebanon)
- [Slovenia](https://apptail.io/app/perfect-ob-wheel-KXZd/slovenia)

---

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