# Risk Group App Database vs Knowing Body

The clearest difference is update cadence: Knowing Body at every 5 weeks against Risk Group App Database's every 3 months. Risk Group App Database's advantage is iOS requirement (13.0 vs 15.1). 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.

Risk Group App Database ships an update every 3 months, Knowing Body every 5 weeks. The most recent releases landed on August 22, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Risk Group App Database | Knowing Body |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/risk-group-app-database/id1163083067/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 19 MB | 63 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [The American Biological Safety Assn Inc](https://appshunter.io/developer/1436640609) | [ZHIWEN YOU](https://appshunter.io/developer/1733993831) |

## What reviewers say

### Risk Group App Database

[App page](https://appshunter.io/ios/app/risk-group-app-database/id1163083067)

Access a comprehensive database of international risk group classifications for bacteria, viruses, fungi, and parasites. Understand how infectious agents are categorized based on pathogenicity, transmission, and availability of treatments.

**Highlights:** Risk group classifications, Bacteria, Viruses, Fungi, Parasites, Pathogenicity assessment, Transmission mode analysis, Treatment availability, International standards

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

**In-app purchases:** none


### Knowing Body

[App page](https://appshunter.io/ios/app/knowing-body/id6747706587)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Risk Group App Database free?

Risk Group App Database is free to download, with no in-app purchases.

### Is Knowing Body free?

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

### Do Risk Group App Database or Knowing Body have ads?

Neither Risk Group App Database nor Knowing Body shows ads.

### Which is updated more often, Risk Group App Database or Knowing Body?

Risk Group App Database ships an update every 3 months, and Knowing Body every 5 weeks. Most recently, Risk Group App Database was updated on August 22, 2026 and Knowing Body on September 20, 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.*