Perfect OB Wheel Downloads & RevenuePerfect OB Wheel · App Store
Perfect OB Wheel is #31 in Medical Paid in United States and charting in 15 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
24 Sep 2026Full timeline · 23 events
- 🌟Perfect OB Wheel: featuring lifted it to #85 (from outside the chart)Top apps de pago · AR
- 🌟Perfect OB Wheel featured by Appleapps · AR
- 📈Perfect OB Wheel entered the top 100Top Paid · All Apps · AR
- 📈Perfect OB Wheel charting in a new country in 2 chartsArgentina · Vietnam
- 📈Perfect OB Wheel entered the top 100Top Paid · Medical · GB
- 📈Perfect OB Wheel charting in a new countryColombia
- 📈Perfect OB Wheel charting in a new countryPhilippines
- 📈Perfect OB Wheel entered the top 10Top Paid · Medical · CA
- 🔎Perfect OB Wheel reached Top 10 for “wheel”#10 in India search · popularity 50
- 📈Perfect OB Wheel entered the top 10Top Paid · Medical · IT
- 📈Perfect OB Wheel new best rank in the overall chart: #107Top Paid · All Apps · IT
- 📈Perfect OB Wheel new best rank in the overall chart: #32Top Paid · All Apps · ZA
- 📈Perfect OB Wheel entered the top 100Top Paid · All Apps · ZA
- 📈Perfect OB Wheel charting in a new countrySouth Africa
- 📈Perfect OB Wheel charting in a new country in 2 chartsMexico · Malaysia
- 📈Perfect OB Wheel entered the top 10Top Paid · Medical · BR
- 📈Perfect OB Wheel new best rank in the overall chart: #109Top Paid · All Apps · CA
- 📈Perfect OB Wheel entered the top 10Top Paid · Medical · IN
- 📈Perfect OB Wheel entered the top 100Top Grossing · Medical · IN
- 📈Perfect OB Wheel charting in a new countrySouth Korea
- 🆕Perfect OB Wheel first spotted by AppInsider#31 in Top Paid · Medical · Canada
- 📦Perfect OB Wheel version 59.1• Fixed a crash at launch on iPads running iOS 26.
• New in Settings: Back Up All Data — export a complete copy of your patient database and photos.
• The app now keeps automatic local snapshots of your database for extra data safety.… more - 🆕Perfect OB Wheel released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Medical PaidPerfect OB Wheel at a glance
AI summary written from our chart and store data, 2026-10-02. It can be wrong: check the numbers above.
A medical utility for obstetricians and midwives that calculates gestational age, due dates, and fetal growth metrics from various input types like LMP or ultrasound data. The app maintains a strong position as the #3 paid medical app in India while also ranking within the top 100 paid medical apps across diverse markets including the US, Russia, Italy, and Brazil.
Similar apps: Gestational Age Calculator, OB Wheel, Pregnancy Tracker
Perfect OB Wheel on the App Store
App details
Perfect OB Wheel downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where Perfect OB Wheel's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | MedicalPaid | #31 |
 Brazil | MedicalPaid | #26 |
 Italy | MedicalPaid | #32 |
 Russia | MedicalPaid | #32 |
 China | MedicalPaid | #163 |
 United Kingdom | MedicalPaid | #105 |
 India | MedicalPaid | #58 |
| Canada | MedicalPaid | #60 |
 Indonesia | MedicalPaid | #36 |
 Saudi Arabia | MedicalPaid | #42 |
 South Korea | MedicalPaid | #115 |
 France | MedicalPaid | #96 |
 Australia | MedicalPaid | #91 |
 United Arab Emirates | MedicalPaid | #72 |
 Argentina | All AppsPaid | #124 |
Apps near Perfect OB Wheel on the chart
Medical Paid, around #31.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisNew ratings by country (2)
| Country | New ratings a week | Share | Last 2 weeks vs the 2 before |
|---|---|---|---|
| United States | 2.2 | 69% | ▼ -17% |
| Canada | 1 | 31% | – |
App Store ratings in the countries we track, 4-week average.
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Perfect OB Wheel
From the 50 most recent App Store reviews in the US.
Medical professionals highly value the app's speed, accuracy, and convenience for calculating gestational dates and managing patient information. However, recent updates have caused significant frustration due to crashes, font size reductions, and perceived misleading pricing structures.
Mostly positive (92% of recent reviews give 4–5 stars). People like it for being useful, and being easy to use. The main complaints are about recent updates, and crashes and bugs. Recent reviews are more negative than earlier ones.
What people like
- Useful: “This is a very helpful tool”
- Ease of use: “Easy to use and understand”
- Features & content: “This is a very helpful tool”
- Crashes & bugs: “Did the update, now the app won't open at all!”
Common complaints
- Updates: “Stopped working after update 45”
- Crashes & bugs: “Stopped working after update 45”
About Perfect OB 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.
