# E vs Safe Vent

The clearest difference is price: Safe Vent at Free against E's $1.99. Safe Vent also leads on update cadence (every 3 months vs every 18 months). E's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 13.0). On ads and device support there is nothing between them.

Safe Vent is free to download; E costs $1.99 up front. Safe Vent sells 2 in-app purchases, starting at $2.99 per month. E asks for nothing beyond the download.

E ships an update every 18 months, Safe Vent every 3 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | E | Safe Vent |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/e-burn-premium/id1544785818/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 82 MB | 58 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Alkemiga](https://appshunter.io/developer/889659304) | [SYNAPS AI SAS](https://appshunter.io/developer/1710831235) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-burn-premium/id1544785818)

This medical app assists in calculating fluid resuscitation for burn patients. It accurately measures Total Body Surface Area (TBSA) and provides fluid requirements based on established formulas. The premium version includes advanced features for skin grafting and donor sites, with recommendations from the French Burns Society.

**Highlights:** Fluid management for burn patients, TBSA measurement, Parkland and Carvajal formulas, Skin grafting and donor site drawing, SFB recommendations

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

**In-app purchases:** none


### Safe Vent

[App page](https://appshunter.io/ios/app/safe-vent/id6468893543)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Safe Vent Full Access | $2.99 | per month |
| Safe Vent Full Access | $29.99 | per year |


## Frequently asked questions

### Is E free?

E costs $1.99, with no in-app purchases.

### Is Safe Vent free?

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

### Do E or Safe Vent have ads?

Neither E nor Safe Vent shows ads.

### Which is updated more often, E or Safe Vent?

E ships an update every 18 months, and Safe Vent every 3 months. Most recently, E was updated on October 24, 2026 and Safe Vent on October 15, 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.*