# CAER Online vs Lighting Survey

The clearest difference is iOS requirement: CAER Online at 15.0 against Lighting Survey's 17.0. On price, update cadence, 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.

CAER Online ships an update every 6 weeks, Lighting Survey monthly. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CAER Online | Lighting Survey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (10 ratings)](https://appshunter.io/ios/app/caer-online/id1318088119/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [gauthierk@laportetx.gov](https://appshunter.io/developer/1318088118) | [Cameron Granger](https://appshunter.io/developer/1886613881) |

## What reviewers say

### CAER Online

[App page](https://appshunter.io/ios/app/caer-online/id1318088119)

Access community alerts and emergency preparedness information related to industrial activities. Learn about local emergency response efforts and how to connect with city officials and local manufacturers.

**Highlights:** Latest CAER Messages, Preparedness Information, Community Involvement, City Connection, Manufacturer Information, Contact EHCMA, Follow on Facebook

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

**In-app purchases:** none


### Lighting Survey

[App page](https://appshunter.io/ios/app/lighting-survey/id6761697486)

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

**In-app purchases:** none


## Frequently asked questions

### Is CAER Online free?

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

### Is Lighting Survey free?

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

### Do CAER Online or Lighting Survey have ads?

Neither CAER Online nor Lighting Survey shows ads.

### Which is updated more often, CAER Online or Lighting Survey?

CAER Online ships an update every 6 weeks, and Lighting Survey monthly. Most recently, CAER Online was updated on October 20, 2026 and Lighting Survey on October 12, 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.*