# OB Wheels vs BiliBuddy

The clearest difference is review sentiment: BiliBuddy at 85% against OB Wheels's 20%. BiliBuddy also leads on rating (4.9 vs 2.3) and update cadence (every 4 weeks vs every 18 months). OB Wheels's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. BiliBuddy sells 1 one-off in-app purchase. OB Wheels asks for nothing beyond the download.

BiliBuddy holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: BiliBuddy has 258 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 20% of OB Wheels's written reviews are positive against 85% of BiliBuddy's.

OB Wheels ships an update every 18 months, BiliBuddy every 4 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OB Wheels | BiliBuddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (15 ratings)](https://appshunter.io/ios/app/ob-wheels/id969845527/reviews) | **[4.9 (258 ratings)](https://appshunter.io/ios/app/bilibuddy/id1173376805/reviews)** |
| Number of ratings | 15 | **258** |
| Positive reviews | 20.0% of reviews | **84.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 30 MB |
| Requires iOS | **7.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Joshua D. steinberg](https://appshunter.io/developer/374154837) | [Covenant Data Systems, LLC](https://appshunter.io/developer/1393847632) |

## What reviewers say

### OB Wheels

[App page](https://appshunter.io/ios/app/ob-wheels/id969845527)

This app calculates due dates, gestational age, and reconciles sonogram and LMP dates using a digital OB wheel and calendar. It offers a familiar interactive wheel for precise date calculations, accounting for leap years.

**Highlights:** Calendar calculator for EDD/EDC, Gestational age calculation, Interactive digital OB wheel, Reconciliation of due dates, Leap year accuracy

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

**In-app purchases:** none


### BiliBuddy

[App page](https://appshunter.io/ios/app/bilibuddy/id1173376805)

This app helps healthcare professionals determine the need for phototherapy or exchange therapy in newborns based on their age, bilirubin levels, and risk factors. It utilizes the latest American Academy of Pediatrics guidelines and displays results on interactive nomograms. The app also tracks infant data and provides links to relevant research.

**Highlights:** Calculates phototherapy threshold, Displays on nomograms, Calculates infant age, Views risk factors, Supports US and SI units, Tracks bilirubin measures

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $6.99 | one-time |


## Frequently asked questions

### Is OB Wheels free?

OB Wheels is free to download, with no in-app purchases.

### Is BiliBuddy free?

BiliBuddy is free to download, with in-app purchases available.

### Which has better reviews, OB Wheels or BiliBuddy?

BiliBuddy is rated higher. OB Wheels averages 2.3 out of 5 from 15 ratings, while BiliBuddy averages 4.9 from 258 ratings.

### Do OB Wheels or BiliBuddy have ads?

BiliBuddy shows ads; OB Wheels does not.

### Which is updated more often, OB Wheels or BiliBuddy?

OB Wheels ships an update every 18 months, and BiliBuddy every 4 weeks. Most recently, OB Wheels was updated on October 26, 2026 and BiliBuddy on October 24, 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.*