# ASHRAE 365 vs CertusAlert

The clearest difference is rating: CertusAlert at 5.0 against ASHRAE 365's 4.2. CertusAlert also leads on update cadence (every 10 days vs every 4 months) and monetization model (free vs ad-supported). ASHRAE 365's advantage is ratings volume (10 vs 1) and iOS requirement (17.6 vs 26.5). 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.

CertusAlert holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: ASHRAE 365 has 10 ratings behind it against 1, so its average is the more settled of the two.

ASHRAE 365 ships an update every 4 months, CertusAlert every 10 days. The most recent releases landed on October 27, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ASHRAE 365 | CertusAlert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (10 ratings)](https://appshunter.io/ios/app/ashrae-365/id1337759799/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/certusalert/id6790866599/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Ad-supported | **Free** |
| Size | 53 MB | 3 MB |
| Requires iOS | **17.6** | 26.5 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ASHRAE, Inc.](https://appshunter.io/developer/375374912) | [Darrell Iehle](https://appshunter.io/developer/6789659622) |

## What reviewers say

### ASHRAE 365

[App page](https://appshunter.io/ios/app/ashrae-365/id1337759799)

Access ASHRAE information year-round. Stay updated on global conferences and events, connect with the community via social media, and discover resources to support the Society.

**Highlights:** Conference and event updates, Social media integration, Resource discovery, Society support information, Year-round access

**Features:** Vision Pro support

**In-app purchases:** none


### CertusAlert

[App page](https://appshunter.io/ios/app/certusalert/id6790866599)

Receive real-time, customizable Building Management System (BMS) alarm messages. Prioritize notifications and automatically sort messages into color-coded folders based on keywords.

**Highlights:** Customizable BMS alarm messaging, Real-time notifications, Priority filtering for alerts, Automatic message sorting, Color-coded folders, Keyword-based sorting

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ASHRAE 365 free?

ASHRAE 365 is free to download, with no in-app purchases.

### Is CertusAlert free?

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

### Which has better reviews, ASHRAE 365 or CertusAlert?

CertusAlert is rated higher. ASHRAE 365 averages 4.2 out of 5 from 10 ratings, while CertusAlert averages 5.0 from 1 ratings.

### Do ASHRAE 365 or CertusAlert have ads?

Neither ASHRAE 365 nor CertusAlert shows ads.

### Which is updated more often, ASHRAE 365 or CertusAlert?

ASHRAE 365 ships an update every 4 months, and CertusAlert every 10 days. Most recently, ASHRAE 365 was updated on October 27, 2026 and CertusAlert on September 25, 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.*