# Multiplier vs AONA Events

The clearest difference is monetization model: AONA Events at free against Multiplier's paid. AONA Events also leads on rating (5.0 vs 4.6) and update cadence (every 2 months vs every 6 months). Multiplier's advantage is ratings volume (24 vs 3). On price, ads, in-app purchases and device support there is nothing between them.

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

AONA Events holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Multiplier has 24 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 83% of Multiplier's written reviews are positive against 100% of AONA Events's.

Multiplier ships an update every 6 months, AONA Events every 2 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Multiplier | AONA Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (24 ratings)](https://appshunter.io/ios/app/multiplier/id460335161/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/aona-events/id1420950949/reviews)** |
| Number of ratings | **24** | 3 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 62 MB | 215 MB |
| Requires iOS | 13.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [LifeBridge Health](https://appshunter.io/developer/460335164) | [The AO North America Inc](https://appshunter.io/developer/1417116321) |

## 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, Vision Pro support

**In-app purchases:** none


### AONA Events

[App page](https://appshunter.io/ios/app/aona-events/id1420950949)

Access all information for AO North America courses, including schedules, materials, venue details, and faculty bios. You can also access your CME directly within the application.

**Highlights:** View event schedules, Access course materials, Venue information, Faculty biographies, Direct CME access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Multiplier free?

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

### Is AONA Events free?

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

### Which has better reviews, Multiplier or AONA Events?

AONA Events is rated higher. Multiplier averages 4.6 out of 5 from 24 ratings, while AONA Events averages 5.0 from 3 ratings.

### Do Multiplier or AONA Events have ads?

Neither Multiplier nor AONA Events shows ads.

### Which is updated more often, Multiplier or AONA Events?

Multiplier ships an update every 6 months, and AONA Events every 2 months. Most recently, Multiplier was updated on October 23, 2026 and AONA Events on October 21, 2026.

---

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