# Multiplier vs Membership App

The clearest difference is review sentiment: Multiplier at 83% against Membership App's 40%. Multiplier also leads on rating (4.6 vs 3.8) and iOS requirement (13.0 vs 15.1). Membership App's advantage is monetization model (free vs paid) and update cadence (every 6 weeks vs every 7 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Multiplier holds the better App Store score, 4.6 against 3.8. Both are backed by a comparable volume of ratings — 24 and 19 respectively. Written reviews point the same way: 83% of Multiplier's written reviews are positive against 40% of Membership App's.

Multiplier ships an update every 7 months, Membership App every 6 weeks. The most recent releases landed on July 2, 2026 and July 21, 2026 respectively.

## The numbers

| Metric | Multiplier | Membership App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (24 ratings)](https://appshunter.io/ios/app/multiplier/id460335161/reviews)** | [3.8 (19 ratings)](https://appshunter.io/ios/app/membership-app-aaos/id1635988366/reviews) |
| Number of ratings | **24** | 19 |
| Positive reviews | **83.3% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 62 MB | 49 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [LifeBridge Health](https://appshunter.io/developer/460335164) | [American Academy of Orthopaedic Surgeons Mobile](https://appshunter.io/developer/549697931) |

## What reviewers say

### Multiplier

[App page](https://appshunter.io/ios/app/multiplier/id460335161)

This app automates complex calculations for predicting mature height, bone length, and limb length discrepancies in children. It simplifies manual methods, reducing calculation time and errors for various orthopedic and growth-related assessments.

**Highlights:** Predict mature height, Calculate bone length, Assess limb length discrepancy, Analyze growth remaining, Plot height on CDC charts, Scanogram calculations, Foot length analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Membership App

[App page](https://appshunter.io/ios/app/membership-app-aaos/id1635988366)

Connect with thousands of orthopaedic professionals, access educational resources, and manage your membership on the go. This app helps you build your knowledge and network within the orthopaedic community.

**Highlights:** Connect with 38,000+ orthopaedic leaders, Member-to-member direct messaging, Access CME and online learning, Manage membership details, Find JAAOS and podcasts, Access Advocacy Center

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Multiplier free?

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

### Is Membership App free?

Membership App is free to download, with no in-app purchases.

### Which has better reviews, Multiplier or Membership App?

Multiplier is rated higher. Multiplier averages 4.6 out of 5 from 24 ratings, while Membership App averages 3.8 from 19 ratings.

### Do Multiplier or Membership App have ads?

Neither Multiplier nor Membership App shows ads.

### Which is updated more often, Multiplier or Membership App?

Multiplier ships an update every 7 months, and Membership App every 6 weeks. Most recently, Multiplier was updated on July 2, 2026 and Membership App on July 21, 2026.

---

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