# Biodetection Guide for First Responders vs Probiotics Guide.

The clearest difference is in-app purchases: Biodetection Guide for First Responders at none against Probiotics Guide.'s 2. Biodetection Guide for First Responders also leads on ads (none vs shown) and iOS requirement (8.0 vs 13.0). Probiotics Guide.'s advantage is update cadence (every 2 weeks vs every 29 months). On price and device support there is nothing between them.

Both are free to download. Probiotics Guide. sells 2 in-app purchases, starting at $1.99 per month. Biodetection Guide for First Responders asks for nothing beyond the download.

Biodetection Guide for First Responders ships an update every 29 months, Probiotics Guide. every 2 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Biodetection Guide for First Responders | Probiotics Guide. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/biodetection-guide-for-first-responders/id951226827/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 29 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 14 MB | 160 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pacific Northwest National Laboratory operated by Battelle](https://appshunter.io/developer/692196517) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## What reviewers say

### Biodetection Guide for First Responders

[App page](https://appshunter.io/ios/app/biodetection-guide-for-first-responders/id951226827)

This guide provides first responders with information on commercially available technologies for biological material detection. It aims to help users make informed decisions about biodetection equipment procurement and use by summarizing available tools and their features.

**Highlights:** Summarizes biodetection technologies, Covers collection, screening, and identification, Based on vendor and external information, Includes technical specifications, Manufacturer verification opportunities

**Features:** macOS Compatibility

**In-app purchases:** none


### Probiotics Guide.

[App page](https://appshunter.io/ios/app/probiotics-guide/id6720753184)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription | $1.99 | per month |
| Sponsorship | $1.99 | one-time |


## Frequently asked questions

### Is Biodetection Guide for First Responders free?

Biodetection Guide for First Responders is free to download, with no in-app purchases.

### Is Probiotics Guide. free?

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

### Do Biodetection Guide for First Responders or Probiotics Guide. have ads?

Probiotics Guide. shows ads; Biodetection Guide for First Responders does not.

### Which is updated more often, Biodetection Guide for First Responders or Probiotics Guide.?

Biodetection Guide for First Responders ships an update every 29 months, and Probiotics Guide. every 2 weeks. Most recently, Biodetection Guide for First Responders was updated on October 24, 2026 and Probiotics Guide. on October 14, 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.*