# IPSDI Exposure Tracker vs StLouis Alerting

The clearest difference is update cadence: IPSDI Exposure Tracker at every 8 days against StLouis Alerting's every 9 months. StLouis Alerting's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

IPSDI Exposure Tracker ships an update every 8 days, StLouis Alerting every 9 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IPSDI Exposure Tracker | StLouis Alerting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (38 ratings)](https://appshunter.io/ios/app/ipsdi-exposure-tracker/id1457260349/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 55.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 9 months |
| Monetization | Free | — |
| Size | 14 MB | 64 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [International Public Safety Data Institute](https://appshunter.io/developer/1457260348) | [Mach Alert Inc.](https://appshunter.io/developer/1472612618) |

## What reviewers say

### IPSDI Exposure Tracker

[App page](https://appshunter.io/ios/app/ipsdi-exposure-tracker/id1457260349)

This app helps firefighters meticulously record and track personal exposures encountered during their duties. It offers a streamlined interface for documenting incidents, ensuring a reliable record for future reference. Developed by a public safety data science organization, it aims to enhance firefighter safety through data documentation.

**Highlights:** Track individual exposures, Record incident details, Maintain a personal exposure log, Simplified modern interface, Developed by public safety experts

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

**In-app purchases:** none


### StLouis Alerting

[App page](https://appshunter.io/ios/app/stlouis-alerting/id6749086458)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IPSDI Exposure Tracker free?

IPSDI Exposure Tracker is free to download, with no in-app purchases.

### Is StLouis Alerting free?

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

### Do IPSDI Exposure Tracker or StLouis Alerting have ads?

Neither IPSDI Exposure Tracker nor StLouis Alerting shows ads.

### Which is updated more often, IPSDI Exposure Tracker or StLouis Alerting?

IPSDI Exposure Tracker ships an update every 8 days, and StLouis Alerting every 9 months. Most recently, IPSDI Exposure Tracker was updated on November 3, 2026 and StLouis Alerting on October 30, 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.*