# RetterTool vs Erste Hilfe Guide

The clearest difference is in-app purchases: Erste Hilfe Guide at none against RetterTool's 5. Erste Hilfe Guide also leads on iOS requirement (10.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RetterTool sells 5 in-app purchases, starting at $0.99 per month. Erste Hilfe Guide asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | RetterTool | Erste Hilfe Guide |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 24 MB |
| Requires iOS | 17.6 | **10.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [8devs GmbH](https://appshunter.io/developer/1517839277) | [adrien el karoui](https://appshunter.io/developer/1532276558) |

## What reviewers say

### RetterTool

[App page](https://appshunter.io/ios/app/rettertool/id1605575736)

This app provides quick access to essential medical information and calculations for emergency and medical personnel. It includes tools for vital sign measurement, scoring systems, and various medical formulas to aid in patient assessment and treatment.

**Highlights:** Vital sign calculation (heart rate, respiratory rate), Medical scoring systems (qSOFA, APGAR, LAMS, GCS), Memory aids for protocols (ABCDE, SAMPLERS, ISBAR), Formula collection (burns, blood pressure, oxygen), Interactive EKG interpretation tool, Patient age-specific standard values

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro-Version Monatlich | $0.99 | per month |
| Kleines Trinkgeld | $0.99 | one-time |
| Mittleres Trinkgeld | $3.99 | one-time |
| Großes Trinkgeld | $8.99 | one-time |
| Pro-Version Lifetime | $22.99 | one-time |


### Erste Hilfe Guide

[App page](https://appshunter.io/ios/app/erste-hilfe-guide/id1620127990)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RetterTool free?

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

### Is Erste Hilfe Guide free?

Erste Hilfe Guide is free to download, with no in-app purchases.

### Do RetterTool or Erste Hilfe Guide have ads?

Neither RetterTool nor Erste Hilfe Guide shows ads.

### Which is updated more often, RetterTool or Erste Hilfe Guide?

RetterTool ships an update every 2 months, and Erste Hilfe Guide every 2 months. Most recently, RetterTool was updated on October 25, 2026 and Erste Hilfe Guide 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.*