# PriorityLab vs IAQ 15

The clearest difference is review sentiment: PriorityLab at 64% against IAQ 15's 0%. PriorityLab also leads on rating (3.3 vs 1.5) and iOS requirement (13.0 vs 15.0). IAQ 15's advantage is update cadence (monthly vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

PriorityLab holds the better App Store score, 3.3 against 1.5. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews point the same way: 64% of PriorityLab's written reviews are positive against 0% of IAQ 15's.

PriorityLab ships an update every 2 months, IAQ 15 monthly. The most recent releases landed on October 2, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | PriorityLab | IAQ 15 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (7 ratings)](https://appshunter.io/ios/app/prioritylab/id944810145/reviews)** | [1.5 (4 ratings)](https://appshunter.io/ios/app/iaq-15/id1618249564/reviews) |
| Number of ratings | **7** | 4 |
| Positive reviews | **63.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 14 MB | 30 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PriorityLab, LLC](https://appshunter.io/developer/473802889) | [Cole-Parmer Instrument Company](https://appshunter.io/developer/1221545005) |

## 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


### IAQ 15

[App page](https://appshunter.io/ios/app/iaq-15/id1618249564)

This app connects to specific hardware to retrieve and view environmental event records. It allows for saving data to a server, updating device firmware, and synchronizing time and location with your mobile device.

**Highlights:** Connects to IAQ 15 hardware via Bluetooth, Retrieves and views event records, Saves event records to server, Updates device firmware, Synchronizes device time and location

**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 IAQ 15 free?

IAQ 15 is free to download, with no in-app purchases.

### Which has better reviews, PriorityLab or IAQ 15?

PriorityLab is rated higher. PriorityLab averages 3.3 out of 5 from 7 ratings, while IAQ 15 averages 1.5 from 4 ratings.

### Do PriorityLab or IAQ 15 have ads?

Neither PriorityLab nor IAQ 15 shows ads.

### Which is updated more often, PriorityLab or IAQ 15?

PriorityLab ships an update every 2 months, and IAQ 15 monthly. Most recently, PriorityLab was updated on October 2, 2026 and IAQ 15 on September 23, 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.*