# IPSDI Exposure Tracker vs CertLocker

The clearest difference is in-app purchases: IPSDI Exposure Tracker at none against CertLocker's 4. IPSDI Exposure Tracker also leads on ads (none vs shown) and update cadence (every 8 days vs every 6 months). CertLocker's advantage is iOS requirement (14.0.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. CertLocker sells 4 in-app purchases, starting at $0.99 per month. IPSDI Exposure Tracker asks for nothing beyond the download.

IPSDI Exposure Tracker ships an update every 8 days, CertLocker every 6 months. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | IPSDI Exposure Tracker | CertLocker |
| --- | --- | --- |
| 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** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 6 months |
| Monetization | Free | — |
| Size | 12 MB | 64 MB |
| Requires iOS | 16.0 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [International Public Safety Data Institute](https://appshunter.io/developer/1457260348) | [Firecal LLC](https://appshunter.io/developer/1710030387) |

## 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 to document incidents, ensuring a comprehensive record for future reference. Developed by a public safety data science organization, it focuses on the individual exposure event.

**Highlights:** Track individual exposures, Record incident details, Simplified modern interface, Focus on exposure events, Build personal records

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

**In-app purchases:** none


### CertLocker

[App page](https://appshunter.io/ios/app/certlocker/id6468518382)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Responder (Monthly) | $0.99 | per month |
| Officer (Monthly) | $4.99 | per month |
| Responder (Yearly) | $9.99 | per year |
| Officer (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is IPSDI Exposure Tracker free?

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

### Is CertLocker free?

CertLocker is free to download, with in-app purchases available.

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

CertLocker shows ads; IPSDI Exposure Tracker does not.

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

IPSDI Exposure Tracker ships an update every 8 days, and CertLocker every 6 months. Most recently, IPSDI Exposure Tracker was updated on October 26, 2026 and CertLocker 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.*