# Perfect OB Tracker vs OB Calc (cloud)

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.

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.

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.

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.

## The numbers

| Metric | Perfect OB Tracker | OB Calc (cloud) |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [4.9 (413 ratings)](https://appshunter.io/ios/app/perfect-ob-tracker/id581826761/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465/reviews)** |
| Number of ratings | **413** | 5 |
| Positive reviews | **74.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#154** | — |
| Size | 12 MB | 14 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Evan Schoenberg](https://appshunter.io/developer/289039917) | [Glen Botha](https://appshunter.io/developer/943181947) |

## What reviewers say

### Perfect OB Tracker

[App page](https://appshunter.io/ios/app/perfect-ob-tracker/id581826761)

**Currently charting:** #154 Top Paid · Medical (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Convenient
- 👍 Helpful for tracking clients
- 👍 Tracks EDD and age post-birth
- 👍 Records sex and name of baby

**What reviewers complain about**

- 🐛 App stopped working
- 🐛 Only states weeks, not days
- 🐛 Lost records when changing phones
- 🐛 Data sync issues with iPad
- 🐛 Lacks options for notes and customization

**Reported bugs**

- 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

**Requested features**

- 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


### OB Calc (cloud)

[App page](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465)

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:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Premium (Annual) | $29.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*