# SVAB Quantum vs StJohnsCO Alerting

The clearest difference is update cadence: SVAB Quantum at monthly against StJohnsCO Alerting's every 19 months. 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.

SVAB Quantum ships an update monthly, StJohnsCO Alerting every 19 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SVAB Quantum | StJohnsCO Alerting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.7 (7 ratings)](https://appshunter.io/ios/app/stjohnsco-alerting/id1533843637/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 19 months |
| Monetization | — | Free |
| Size | 18 MB | 68 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SVAB Hydraulik AB](https://appshunter.io/developer/1317241516) | [Mach Alert Inc.](https://appshunter.io/developer/1472612618) |

## What reviewers say

### SVAB Quantum

[App page](https://appshunter.io/ios/app/svab-quantum/id1317241517)

**In-app purchases:** none


### StJohnsCO Alerting

[App page](https://appshunter.io/ios/app/stjohnsco-alerting/id1533843637)

This application provides advanced fire station alerting functionality for public safety answering points and fire/EMS facilities. It aims to reduce dispatch time and deliver critical information to first responders through tones and voice alerts. Optional add-ons and customization are available for enhanced field operations.

**Highlights:** State-of-the-art alerting functionality, Reliable dispatch for PSAPs and fire/EMS, Tones and voice alerts, Optional add-ons and customization, Companion mobile application

**In-app purchases:** none


## Frequently asked questions

### Is SVAB Quantum free?

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

### Is StJohnsCO Alerting free?

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

### Do SVAB Quantum or StJohnsCO Alerting have ads?

Neither SVAB Quantum nor StJohnsCO Alerting shows ads.

### Which is updated more often, SVAB Quantum or StJohnsCO Alerting?

SVAB Quantum ships an update monthly, and StJohnsCO Alerting every 19 months. Most recently, SVAB Quantum was updated on November 2, 2026 and StJohnsCO Alerting on November 3, 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.*