# Ferri's Best Test vs PriMed Rx Mobile

The clearest difference is in-app purchases: PriMed Rx Mobile at none against Ferri's Best Test's 1. PriMed Rx Mobile also leads on ads (none vs shown) and update cadence (every 2 months vs every 6 months). On price and device support there is nothing between them.

Both are free to download. Ferri's Best Test sells 1 one-off in-app purchase. PriMed Rx Mobile asks for nothing beyond the download.

Ferri's Best Test ships an update every 6 months, PriMed Rx Mobile every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ferri's Best Test | PriMed Rx Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/ferris-best-test-lab-guide/id1243450037/reviews)** | — |
| Number of ratings | **26** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 149 MB | 27 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Skyscape Medpresso Inc](https://appshunter.io/developer/818609416) | [PriMed Pharmaceuticals, LLC](https://appshunter.io/developer/1502296676) |

## What reviewers say

### Ferri's Best Test

[App page](https://appshunter.io/ios/app/ferris-best-test-lab-guide/id1243450037)

This medical reference app provides guidance on laboratory and imaging approaches for over 400 tests and 230 diseases. It features interactive flowcharts, IU units, and concise clinical material to aid in test selection and diagnostic skills.

**Highlights:** Over 400+ tests and labs, Guidance on radio-logic & laboratory approaches, 230+ common diseases, Interactive flowcharts, IU units for all tests, SmartSearch technology

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ferri's Best Test - Lab & Diag | $40.99 | one-time |


### PriMed Rx Mobile

[App page](https://appshunter.io/ios/app/primed-rx-mobile/id1502296677)

**In-app purchases:** none


## Frequently asked questions

### Is Ferri's Best Test free?

Ferri's Best Test is free to download, with in-app purchases available.

### Is PriMed Rx Mobile free?

PriMed Rx Mobile is free to download, with no in-app purchases.

### Do Ferri's Best Test or PriMed Rx Mobile have ads?

Ferri's Best Test shows ads; PriMed Rx Mobile does not.

### Which is updated more often, Ferri's Best Test or PriMed Rx Mobile?

Ferri's Best Test ships an update every 6 months, and PriMed Rx Mobile every 2 months. Most recently, Ferri's Best Test was updated on November 2, 2026 and PriMed Rx Mobile on November 3, 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.*