# BiliCalc vs The OB Wheel Pro 7

The clearest difference is monetization model: BiliCalc at free against The OB Wheel Pro 7's paid. BiliCalc also leads on review sentiment (66% vs 41%) and update cadence (every 2 months vs every 9 months). The OB Wheel Pro 7's advantage is iOS requirement (11.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

BiliCalc costs $1.99 and The OB Wheel Pro 7 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BiliCalc ships an update every 2 months, The OB Wheel Pro 7 every 9 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | BiliCalc | The OB Wheel Pro 7 |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | — | **[4.0 (5 ratings)](https://appshunter.io/ios/app/the-ob-wheel-pro-7/id730081554/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | **65.5% of reviews** | 41.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#157** | — |
| Size | 7 MB | 1 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Jacob Beniflah, MD](https://appshunter.io/developer/432749902) | [Don Miller](https://appshunter.io/developer/284593781) |

## What reviewers say

### BiliCalc

[App page](https://appshunter.io/ios/app/bilicalc/id432749899)

**Currently charting:** #157 Top Paid · Medical (US App Store)

This app calculates phototherapy thresholds for newborns based on age, bilirubin levels, and neurotoxicity risk, referencing AAP guidelines. It displays values on a phototherapy nomogram and identifies the patient's risk zone using the Bhutani Nomogram.

**Highlights:** Calculates phototherapy threshold for newborns, Displays values on phototherapy nomogram, Identifies patient risk zone using Bhutani Nomogram, Calculates age from birth and lab times, Direct links to reference articles and risk factors, Supports US and SI units

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Simple design
- 👍 User-friendly interface
- ⏱️ Time saver
- 👍 Great for quick calculations

**What reviewers complain about**

- ❌ Outdated guidelines (2004)
- ❌ Not updated for 2022 guidelines
- ❌ Inaccurate plotting (historical)
- ❌ Potentially dangerous inaccuracies
- ❌ Appears abandoned

**Reported bugs**

- Intermittently inaccurate plotting of bili values
- Plots bili at lower than value entered
- Graph is backwards (historical)
- Instability misspelled (historical)
- Graph errors when on phone call (historical)

**Requested features**

- Update to 2022 guidelines
- Include transcutaneous measurements
- Show hours since birth on graph
- Plot more than one point on graph
- Add dark mode option


### The OB Wheel Pro 7

[App page](https://appshunter.io/ios/app/the-ob-wheel-pro-7/id730081554)

This medical tool assists healthcare professionals in prenatal care by calculating gestational age, fetal weight, and risk tables. It offers a comprehensive suite of calculators for EDD, LMP, conception dates, and ultrasound biometrics, replacing multiple apps and physical wheels.

**Highlights:** Gestational Age Calculator, Ultrasound Biometric Calculator, Fetal Weight Calculator, Risk Table for Trisomy 21, BMI Calculator, Apple Watch App

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BiliCalc free?

BiliCalc costs $1.99, with no in-app purchases.

### Is The OB Wheel Pro 7 free?

The OB Wheel Pro 7 costs $1.99, with no in-app purchases.

### Do BiliCalc or The OB Wheel Pro 7 have ads?

Neither BiliCalc nor The OB Wheel Pro 7 shows ads.

### Which is updated more often, BiliCalc or The OB Wheel Pro 7?

BiliCalc ships an update every 2 months, and The OB Wheel Pro 7 every 9 months. Most recently, BiliCalc was updated on November 1, 2026 and The OB Wheel Pro 7 on November 1, 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.*