# PriorityLab vs RadStar Alpha Series

The clearest difference is rating: RadStar Alpha Series at 4.0 against PriorityLab's 3.3. RadStar Alpha Series also leads on review sentiment (100% vs 64%). PriorityLab's advantage is iOS requirement (13.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RadStar Alpha Series holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 7 and 5 respectively. Written reviews point the same way: 64% of PriorityLab's written reviews are positive against 100% of RadStar Alpha Series's.

PriorityLab ships an update every 2 months, RadStar Alpha Series every 4 months. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | PriorityLab | RadStar Alpha Series |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (7 ratings)](https://appshunter.io/ios/app/prioritylab/id944810145/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/radstar-alpha-series/id1434038140/reviews)** |
| Number of ratings | **7** | 5 |
| Positive reviews | 63.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 14 MB | 30 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PriorityLab, LLC](https://appshunter.io/developer/473802889) | [Spruce Environmental Technologies, Inc.](https://appshunter.io/developer/1434038139) |

## What reviewers say

### PriorityLab

[App page](https://appshunter.io/ios/app/prioritylab/id944810145)

This app simplifies mold testing for professionals by digitizing the Chain of Custody process. Log sample data, capture images, and submit electronic forms directly from your mobile device, eliminating the need for paper forms.

**Highlights:** Electronic Chain of Custody submission, Log sample data with photos, Pre-setup inspections, Download inspections to phone, Streamlined workflow

**Features:** macOS Compatibility

**In-app purchases:** none


### RadStar Alpha Series

[App page](https://appshunter.io/ios/app/radstar-alpha-series/id1434038140)

This app manages data from specific continuous radon monitors. It allows users to start, stop, and sync radon test results to a cloud platform for company management and reporting.

**Highlights:** Control and manage radon monitor data, Sync test results to cloud, Manage company profile details, Support for multiple users, Customize reporting templates, Automate QC reporting

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

**In-app purchases:** none


## Frequently asked questions

### Is PriorityLab free?

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

### Is RadStar Alpha Series free?

RadStar Alpha Series is free to download, with no in-app purchases.

### Which has better reviews, PriorityLab or RadStar Alpha Series?

RadStar Alpha Series is rated higher. PriorityLab averages 3.3 out of 5 from 7 ratings, while RadStar Alpha Series averages 4.0 from 5 ratings.

### Do PriorityLab or RadStar Alpha Series have ads?

Neither PriorityLab nor RadStar Alpha Series shows ads.

### Which is updated more often, PriorityLab or RadStar Alpha Series?

PriorityLab ships an update every 2 months, and RadStar Alpha Series every 4 months. Most recently, PriorityLab was updated on October 2, 2026 and RadStar Alpha Series on October 9, 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.*