Comparison

Perfect OB Tracker vs OB Calc (cloud)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Perfect OB Tracker

This app provides a comprehensive pregnancy wheel and tracker for medical professionals. It allows for managing multiple patients, calculating due dates, tracking gestational age, and even monitoring postpartum information. The tool offers quick calculations and detailed fetal growth estimates.

Highlights
  • Patient management
  • Due date calculation
  • Gestational age tracking
  • Postpartum tracking
  • Quick calculator
  • Fetal growth estimates
  • HIPAA compliant passcode lock
Features
Currently charting
Read full description

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

About

OB Calc (cloud)

This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.

Highlights
  • LMP, EDC, Ultrasound, CRL, and IVF calculations
  • Customizable test date ranges
  • Cross-device data syncing
  • PDF report generation
  • Save individual patient data
Features
Read full description

While similar to a pregnancy wheel, OB Calc (cloud) is specifically designed by an obstetrician, for obstetricians. Finally obstetricians have an efficient and simple method to calculate the important test date windows for patients. CALCULATION METHODS • Last Menstrual Period (LMP) • Expected Delivery Date (EDC) • Sonogram Date and Fetal Age (Sonogram) • Crown Rump Length (CRL) • In Vitro Fertilization (IVF) Try the app for free for 7 days. A low monthly autorenewable subscription gives users access to premium features such as all calculation methods and saving of individual patient data. You can reach the developer directly at support@inpocketsolutions.com FEATURES • LMP, EDC, Ultrasound, CRL and IVF Method Calculations • Customize up to 15 tests, with date ranges • Data synced across multiple devices • Generate a PDF file • Save individual patient data CRL data reference : https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.7654 Terms & Conditions: https://inpocketsolutions.com/terms ** Disclaimer Remember to test out the app on your specific device to ensure calculations are verified to your expectation.

Screenshots

Perfect OB Tracker4 screens
OB Calc (cloud)4 screens

Verdict

The call

Perfect OB Tracker and OB Calc (cloud) both sit at 4.9 stars, but that hides the real split: 74% of Perfect OB Tracker's written reviews are positive against 0% of OB Calc (cloud)'s. Perfect OB Tracker also leads on in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 3 months). OB Calc (cloud)'s advantage is price (Free vs $6.99). On rating, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

OB Calc (cloud) is free to download; Perfect OB Tracker costs $6.99 up front. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. Perfect OB Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Perfect OB Tracker against 5.0 for OB Calc (cloud). That said, the two scores are not equally well evidenced: Perfect OB Tracker has 413 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 74% of Perfect OB Tracker's written reviews are positive against 0% of OB Calc (cloud)'s.

UpkeepUpdate frequency

Perfect OB Tracker ships an update every 2 weeks, OB Calc (cloud) every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 3 level
Perfect OB Tracker versus OB Calc (cloud): the parameters behind the verdict, then further details
ParameterPerfect OB TrackerOB Calc (cloud)
Price$6.99Free — better
Rating4.9 (413 ratings)5.0 (5 ratings) — better
Positive reviews74.1% of reviews — better0.0% of reviews
Number of ratings413 — better5
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#144 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better18.0
Further details — not scored
Size12 MB14 MB
Age rating17+4+
DeveloperEvan SchoenbergGlen Botha

Customer experience

Perfect OB Tracker

All ratings408 ratings
Positive97.8%
Neutral1.0%
Negative1.2%
Written reviews54 reviews
Positive74.1%
Neutral5.6%
Negative20.4%

OB Calc (cloud)

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Perfect OB Tracker

Reported bugs

9 issues
  • App just stopped working properly
  • App stopped working out of nowhere
  • Lost all records when changing phones
  • Syncing data to iPad is not working
  • Dates change erratically when toggling between patients
Show 4 more
  • App doesn't open on iOS 6
  • Update caused app to not open and lost all info
  • Won't sync to new iPhone
  • iCloud option not working better

Requested features

48 requests
  • Ability to share data with assistants
  • More options for writing notes
  • More customizable for practice
  • Way to share data with assistants
  • Export list to Word or Excel
Show 43 more
  • Ability to copy and paste data
  • List of patients due each month through the year
  • Android version of the app
  • Ability to sync with other users
  • Enter phone number and dial directly from the app
  • Add delivery date to prevent patients appearing as post dates
  • Ability to keep track of delivered patients for reporting
  • Identify primary vs. secondary midwife clients
  • Amend name, MRN, and photo after setup
  • Ability to sync up with other people
  • Link to phone's calendar for appointments
  • Option to mark patients as delivered and archive them
  • Add alarm for certain dates
  • Postpartum tracking
  • Enter phone number and relate to phone agenda
  • Ability to keep patient name after delivery for a few months
  • Delivery date and postpartum date counter
  • Sync with iPad through the cloud
  • More functionality for gestational age and patient data (infections, blood type)
  • iCloud communication between devices
  • More complicated password system
  • Add delivery date and track time since birth for postnatal care
  • Option to enter phone number and dial directly
  • Add delivery date so patients don't appear as post dates
  • Ability to keep track of delivered patients for reporting
  • More options for notes and customization
  • Identify primary vs. secondary midwife clients
  • Amend name, MRN, and photo after setup
  • Sync with other users
  • Android version
  • Export data
  • More detailed patient information fields (parity, delivery route, age, comorbidity, health plan)
  • Add alarm for specific dates
  • Postpartum tracking
  • Link appointments to phone calendar
  • Option to delete delivered patients
  • More complicated password system
  • Sync with iPad via iCloud
  • Ability to keep patient name after delivery for follow-up
  • Delivery date and postpartum date counter
  • Sync with iPad through the cloud
  • More detailed patient data fields
  • iCloud sync between devices

OB Calc (cloud)

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Perfect OB Tracker

No in-app purchases

2 purchases

OB Calc (cloud)

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Premium (Annual)$29.991 Year

Questions

Is Perfect OB Tracker free?
Perfect OB Tracker costs $6.99, with no in-app purchases.
Is OB Calc (cloud) free?
OB Calc (cloud) is free to download, with in-app purchases available.
Which has better reviews, Perfect OB Tracker or OB Calc (cloud)?
OB Calc (cloud) is rated higher. Perfect OB Tracker averages 4.9 out of 5 from 413 ratings, while OB Calc (cloud) averages 5.0 from 5 ratings.
Do Perfect OB Tracker or OB Calc (cloud) have ads?
Neither Perfect OB Tracker nor OB Calc (cloud) shows ads.
Which is updated more often, Perfect OB Tracker or OB Calc (cloud)?
Perfect OB Tracker ships an update every 2 weeks, and OB Calc (cloud) every 3 months. Most recently, Perfect OB Tracker was updated on November 1, 2026 and OB Calc (cloud) on November 3, 2026.

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