# Firefighter I Test Prep vs Rapitest® Microbial Kit

The clearest difference is in-app purchases: Rapitest® Microbial Kit at none against Firefighter I Test Prep's 2. Rapitest® Microbial Kit also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (15.0 vs 17.2). On price, ads and device support there is nothing between them.

Both are free to download. Firefighter I Test Prep sells 2 in-app purchases, starting at $9.99 per month. Rapitest® Microbial Kit asks for nothing beyond the download.

Firefighter I Test Prep ships an update every 2 months, Rapitest® Microbial Kit every 3 days. The most recent releases landed on September 21, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Firefighter I Test Prep | Rapitest® Microbial Kit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rapitest-microbial-kit/id6756600450/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 9 MB | 66 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Prolific Earth Sciences Corporation](https://appshunter.io/developer/1211861155) |

## What reviewers say

### Firefighter I Test Prep

[App page](https://appshunter.io/ios/app/firefighter-i-test-prep/id6738811657)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $9.99 | per month |
| Lifetime version | $19.99 | one-time |


### Rapitest® Microbial Kit

[App page](https://appshunter.io/ios/app/rapitest-microbial-kit/id6756600450)

This app analyzes soil samples to measure microbial life, providing insights into soil health. It helps gardeners understand how practices and products impact their soil, leading to healthier plants and reduced chemical use.

**Highlights:** Soil microbial analysis, Soil health monitoring, Plant nutrient access insights, Improved soil structure understanding, Gardening practice impact assessment

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

**In-app purchases:** none


## Frequently asked questions

### Is Firefighter I Test Prep free?

Firefighter I Test Prep is free to download, with in-app purchases available.

### Is Rapitest® Microbial Kit free?

Rapitest® Microbial Kit is free to download, with no in-app purchases.

### Do Firefighter I Test Prep or Rapitest® Microbial Kit have ads?

Neither Firefighter I Test Prep nor Rapitest® Microbial Kit shows ads.

### Which is updated more often, Firefighter I Test Prep or Rapitest® Microbial Kit?

Firefighter I Test Prep ships an update every 2 months, and Rapitest® Microbial Kit every 3 days. Most recently, Firefighter I Test Prep was updated on September 21, 2026 and Rapitest® Microbial Kit on September 27, 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.*