# IPSDI Exposure Tracker vs Hotwash

IPSDI Exposure Tracker and Hotwash are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 9 days, Hotwash every 5 days. The most recent releases landed on November 11, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IPSDI Exposure Tracker | Hotwash |
| --- | --- | --- |
| 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 9 days | **Every 5 days** |
| Monetization | Free | — |
| Size | 15 MB | 78 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [International Public Safety Data Institute](https://appshunter.io/developer/1457260348) | [hotwash.work](https://appshunter.io/developer/1790408412) |

## What reviewers say

### IPSDI Exposure Tracker

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

This app allows firefighters to easily track and record individual exposures encountered during their work. It provides a simplified interface to document incidents that may require future reference. Developed by a public safety data science organization, it aims to enhance personal safety through data documentation.

**Highlights:** Track individual exposures, Record exposure history, Simplified modern interface, Focus on exposure events, Developed by public safety experts

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

**In-app purchases:** none


### Hotwash

[App page](https://appshunter.io/ios/app/hotwash/id6739195316)

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

**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 Hotwash free?

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

### Do IPSDI Exposure Tracker or Hotwash have ads?

Neither IPSDI Exposure Tracker nor Hotwash shows ads.

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

IPSDI Exposure Tracker ships an update every 9 days, and Hotwash every 5 days. Most recently, IPSDI Exposure Tracker was updated on November 11, 2026 and Hotwash 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.*