# RetterTool vs Status 4

The clearest difference is in-app purchases: Status 4 at none against RetterTool's 5. Status 4 also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.5 vs 17.6). RetterTool's advantage is review sentiment (92% vs 67%). On price, 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. Status 4 asks for nothing beyond the download.

RetterTool ships an update every 2 months, Status 4 weekly. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | RetterTool | Status 4 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **91.7% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 19 MB | 117 MB |
| Requires iOS | 17.6 | **15.5** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [8devs GmbH](https://appshunter.io/developer/1517839277) | [Leon Herget](https://appshunter.io/developer/6772346974) |

## 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 |


### Status 4

[App page](https://appshunter.io/ios/app/status-4/id6772346972)

This app provides essential medical knowledge and tools for emergency medical personnel. It offers offline access to medication information, algorithms, scores, and calculators, aiding in both on-the-job reference and training.

**Highlights:** Offline medication database, Emergency algorithms and protocols, Triage and scoring tools, Medical calculators, Sonography trainer, Multilingual anamnesis questions, Shift logging and reporting

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

**In-app purchases:** none


## Frequently asked questions

### Is RetterTool free?

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

### Is Status 4 free?

Status 4 is free to download, with no in-app purchases.

### Do RetterTool or Status 4 have ads?

Neither RetterTool nor Status 4 shows ads.

### Which is updated more often, RetterTool or Status 4?

RetterTool ships an update every 2 months, and Status 4 weekly. Most recently, RetterTool was updated on October 8, 2026 and Status 4 on October 4, 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.*