# Multiplier vs OrthoSimple

The clearest difference is update cadence: OrthoSimple at every 2 days against Multiplier's every 6 months. 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.

Multiplier ships an update every 6 months, OrthoSimple every 2 days. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Multiplier | OrthoSimple |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (24 ratings)](https://appshunter.io/ios/app/multiplier/id460335161/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 62 MB | 18 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [LifeBridge Health](https://appshunter.io/developer/460335164) | [MANUEL HONORIO DE LA TORRE](https://appshunter.io/developer/1762881197) |

## 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


### OrthoSimple

[App page](https://appshunter.io/ios/app/orthosimple/id6636496425)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Multiplier free?

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

### Is OrthoSimple free?

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

### Do Multiplier or OrthoSimple have ads?

Neither Multiplier nor OrthoSimple shows ads.

### Which is updated more often, Multiplier or OrthoSimple?

Multiplier ships an update every 6 months, and OrthoSimple every 2 days. Most recently, Multiplier was updated on November 6, 2026 and OrthoSimple on October 27, 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.*