# 3D Burn vs Mrep (Legacy)

3D Burn and Mrep (Legacy) are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 22, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 3D Burn | Mrep (Legacy) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/3d-burn/id1183128395/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 404 MB | 54 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Operation Smile Foundation](https://appshunter.io/developer/1568637952) | [Sameel Tariq](https://appshunter.io/developer/1350113836) |

## What reviewers say

### 3D Burn

[App page](https://appshunter.io/ios/app/3d-burn/id1183128395)

Calculate burn resuscitation fluid using a 3D human model and the Parkland formula. Features include interactive 3D model manipulation, burn area marking, and fluid calculation based on weight and time since burn. Designed as an educational tool for medical students.

**Highlights:** 3D human model for burn calculations, Parkland formula implementation, Interactive 3D model rotation and zoom, Burn area marking and level adjustment, Fluid calculation by weight and time, BMI-based model selection

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

**In-app purchases:** none


### Mrep (Legacy)

[App page](https://appshunter.io/ios/app/mrep-legacy/id1350113837)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 3D Burn free?

3D Burn is free to download, with no in-app purchases.

### Is Mrep (Legacy) free?

Mrep (Legacy) is free to download, with no in-app purchases.

### Do 3D Burn or Mrep (Legacy) have ads?

Neither 3D Burn nor Mrep (Legacy) shows ads.

### Which is updated more often, 3D Burn or Mrep (Legacy)?

3D Burn ships an update every 3 weeks, and Mrep (Legacy) every 3 weeks. Most recently, 3D Burn was updated on October 22, 2026 and Mrep (Legacy) on October 3, 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.*