Perfect OB Tracker Downloads & RevenuePerfect OB Tracker · App Store
Perfect OB Tracker is #24 in Medical Paid in Brazil and charting in 5 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperEvan Schoenberg
CategoryMedical
Price6.99 USD
Released
Rating★ 4.9 (415)
Version3.9.1
Age rating17+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)100k+ worldwide
⭐Passed 1K ratings📈New best rank in the overall chart: #108📈Charting in a new country⭐Passed 1K ratings🆕First spotted by AppInsider📦Version 3.9.1🆕Released on the App Store
Full timeline · 20 events
- 📈Perfect OB Tracker new best rank in the overall chart: #108Top Paid · All Apps · BR
- 📈Perfect OB Tracker charting in a new countryMexico
- 📈Perfect OB Tracker charting in a new countryVietnam
- 📈Perfect OB Tracker charting in a new countryPhilippines
- 📈Perfect OB Tracker entered the top 100Top Paid · Medical · US
- 📈Perfect OB Tracker entered the top 10Top Paid · Medical · AU
- 📈Perfect OB Tracker new best rank in the overall chart: #129Top Paid · All Apps · IT
- 📈Perfect OB Tracker entered the top 10Top Paid · Medical · IT
- 📈Perfect OB Tracker entered the top 100Top Paid · Medical · AU
- 📈Perfect OB Tracker entered the top 100 in 2 chartsTop Paid · Medical · IT · Top Grossing · Medical · IT
- 📈Perfect OB Tracker charting in a new countryUnited States
- 📈Perfect OB Tracker charting in a new country in 2 chartsIndia · Italy
- 🆕Perfect OB Tracker first spotted by AppInsider#38 in Top Paid · Medical · Canada
- 📦Perfect OB Tracker version 3.9.1• 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 Tracker released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.9 ★
415 ratings
Measured
Best rank now
#24
Medical PaidMeasured
New ratings a week
1.2
App Store, 4-week average
Measured
Perfect OB Tracker on the App Store
App details
App ID
581826761
Publisher
Evan Schoenberg, M.D.
On the store since
Nov 2012
13 years on the store
Minimum OS
iOS 13.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
17+
1 content note below
Languages
11
AR EN FR DE IT JA KO PT RU ZH ES
Size
13 MB
Also listed in
Health & Fitness
Content notesFrequent/Intense Medical/Treatment Information
Perfect OB Tracker downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Perfect OB Tracker'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.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Perfect OB Tracker makes money: subscriptions, one-off purchases and ads.
Ads · 2 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Brazil | MedicalPaid | #24 |
 Australia | MedicalPaid | #123 |
| Canada | MedicalPaid | #127 |
 Russia | MedicalPaid | #99 |
 Italy | MedicalPaid | #153 |
Apps near Perfect OB Tracker on the chart
Medical Paid, around #24.
Ratings
App Store, worldwide.
Rating
4.9 ★
415 ratings
Measured
Ratings
415
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
1.2
4-week average
Lifetime rating
4.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
63/100
faster than 72% of Medical apps
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 Tracker
From the 21 most recent App Store reviews in the US.
Mixed but leaning positive (71% of recent reviews give 4–5 stars). People like it for its features and content, and regular updates.
What people like
- Features & content: “I use every tool in this app”
- Updates: “Updates I would like to see that would make it more useful include:”
- Ease of use: “This app is easy to use and is convenient”
- Connection & sync: “Needs to sync with iPad thru the cloud”
About Perfect OB Tracker
Simple, fast, yet more thorough than any other pregnancy wheel available for the iPhone, Perfect OB Tracker is better than just a replacement for your trusty paper wheel.
• Keep track of any number of pregnant patients with at-a-glance due date and gestational age
• Synchronize to all your iOS devices via iCloud (optional)
• Sort by name or due date
• Search by name or medical record number
• Keep notes on each patient
• Track postpartum, as well, noting delivery date, gender, and name
• Quick Calculator lets you use the OB wheel without having to enter patient data for one-off calculations
1) 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").
Enter dates quickly with the intelligent keypad (which knows when you're done typing the month, for example, and automatically moves to the day) or with the spinning date wheel.
2) Get 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.
3) Accurate results: Perfect OB Wheel provides exact dates and accounts for all calendar variance, including leap years.
4) Secure: HIPAA complaint passcode locking keeps your patient information safe
• Keep track of any number of pregnant patients with at-a-glance due date and gestational age
• Synchronize to all your iOS devices via iCloud (optional)
• Sort by name or due date
• Search by name or medical record number
• Keep notes on each patient
• Track postpartum, as well, noting delivery date, gender, and name
• Quick Calculator lets you use the OB wheel without having to enter patient data for one-off calculations
1) 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").
Enter dates quickly with the intelligent keypad (which knows when you're done typing the month, for example, and automatically moves to the day) or with the spinning date wheel.
2) Get 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.
3) Accurate results: Perfect OB Wheel provides exact dates and accounts for all calendar variance, including leap years.
4) Secure: HIPAA complaint passcode locking keeps your patient information safe
Latest updates
3.9.1
• 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.
