# Risk Group App Database vs Tiny Bookshelf

The clearest difference is in-app purchases: Risk Group App Database at none against Tiny Bookshelf's 3. Risk Group App Database also leads on device support (3 vs 1) and iOS requirement (13.0 vs 26.0). Tiny Bookshelf's advantage is ratings volume (13 vs 2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Tiny Bookshelf sells 3 in-app purchases, starting at $3.99 per 7 days. Risk Group App Database asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Risk Group App Database against 5.0 for Tiny Bookshelf. That said, the two scores are not equally well evidenced: Tiny Bookshelf has 13 ratings behind it against 2, so its average is the more settled of the two.

Risk Group App Database ships an update every 3 months, Tiny Bookshelf every 2 months. The most recent releases landed on September 18, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Risk Group App Database | Tiny Bookshelf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/risk-group-app-database/id1163083067/reviews) | [5.0 (13 ratings)](https://appshunter.io/ios/app/tiny-bookshelf-ai-summaries/id6504901406/reviews) |
| Number of ratings | 2 | **13** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Freemium |
| Size | 19 MB | 168 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [The American Biological Safety Assn Inc](https://appshunter.io/developer/1436640609) | [Tiny Leo Co., Ltd](https://appshunter.io/developer/1660777736) |

## 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


### Tiny Bookshelf

[App page](https://appshunter.io/ios/app/tiny-bookshelf-ai-summaries/id6504901406)

This app provides AI-powered summaries of books, allowing users to quickly grasp key insights. It offers audio versions of summaries, a focus timer with ambient sounds, and customizable reading options to enhance learning and productivity.

**Highlights:** AI-powered book summaries, Audio playback of summaries, Focus timer with white noise, Multi-language support, Customizable reading interface, Save and share quotes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $34.99 | per year |


## Frequently asked questions

### Is Risk Group App Database free?

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

### Is Tiny Bookshelf free?

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

### Which has better reviews, Risk Group App Database or Tiny Bookshelf?

Risk Group App Database and Tiny Bookshelf are both rated 5.0 out of 5 on the App Store, from 2 and 13 ratings respectively.

### Do Risk Group App Database or Tiny Bookshelf have ads?

Neither Risk Group App Database nor Tiny Bookshelf shows ads.

### Which is updated more often, Risk Group App Database or Tiny Bookshelf?

Risk Group App Database ships an update every 3 months, and Tiny Bookshelf every 2 months. Most recently, Risk Group App Database was updated on September 18, 2026 and Tiny Bookshelf on September 30, 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.*