# ShiftCal® for Houston Fire vs Mach Mobile Alerting

The clearest difference is price: Mach Mobile Alerting at Free against ShiftCal® for Houston Fire's $6.99. Mach Mobile Alerting also leads on update cadence (every 2 months vs every 5 months). ShiftCal® for Houston Fire's advantage is iOS requirement (11.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Mach Mobile Alerting is free to download; ShiftCal® for Houston Fire costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ShiftCal® for Houston Fire ships an update every 5 months, Mach Mobile Alerting every 2 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ShiftCal® for Houston Fire | Mach Mobile Alerting |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[3.2 (5 ratings)](https://appshunter.io/ios/app/shiftcal-for-houston-fire/id710639941/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 23 MB | 47 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Wesley Erickson](https://appshunter.io/developer/710639944) | [Mach Alert Inc.](https://appshunter.io/developer/1472612618) |

## What reviewers say

### ShiftCal® for Houston Fire

[App page](https://appshunter.io/ios/app/shiftcal-for-houston-fire/id710639941)

This utility app helps manage work schedules for firefighters, clearly displaying shifts and optionally highlighting paydays. It focuses exclusively on shift-based calendars, not general appointments.

**Highlights:** Shift calendar management, Debit day highlighting, Optional payday display, Firefighter-specific scheduling, Dedicated shift calendar

**Features:** macOS Compatibility

**In-app purchases:** none


### Mach Mobile Alerting

[App page](https://appshunter.io/ios/app/mach-mobile-alerting/id6762401418)

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

**In-app purchases:** none


## Frequently asked questions

### Is ShiftCal® for Houston Fire free?

ShiftCal® for Houston Fire costs $6.99, with no in-app purchases.

### Is Mach Mobile Alerting free?

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

### Do ShiftCal® for Houston Fire or Mach Mobile Alerting have ads?

Neither ShiftCal® for Houston Fire nor Mach Mobile Alerting shows ads.

### Which is updated more often, ShiftCal® for Houston Fire or Mach Mobile Alerting?

ShiftCal® for Houston Fire ships an update every 5 months, and Mach Mobile Alerting every 2 months. Most recently, ShiftCal® for Houston Fire was updated on October 13, 2026 and Mach Mobile Alerting on October 11, 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.*