# PSB Watch vs MASD  Alerting

The clearest difference is update cadence: PSB Watch at every 6 months against MASD  Alerting's every 13 months. MASD  Alerting's advantage is iOS requirement (12.0 vs 14). 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.

PSB Watch ships an update every 6 months, MASD  Alerting every 13 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | PSB Watch | MASD  Alerting |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 13 months |
| Size | 16 MB | 65 MB |
| Requires iOS | 14 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TRAPWIRE Inc](https://appshunter.io/developer/664378232) | [Mach Alert Inc.](https://appshunter.io/developer/1472612618) |

## What reviewers say

### PSB Watch

[App page](https://appshunter.io/ios/app/psb-watch/id1332084027)

**Features:** macOS Compatibility

**In-app purchases:** none


### MASD  Alerting

[App page](https://appshunter.io/ios/app/masd-alerting/id1629039048)

**In-app purchases:** none


## Frequently asked questions

### Is PSB Watch free?

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

### Is MASD  Alerting free?

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

### Do PSB Watch or MASD  Alerting have ads?

Neither PSB Watch nor MASD  Alerting shows ads.

### Which is updated more often, PSB Watch or MASD  Alerting?

PSB Watch ships an update every 6 months, and MASD  Alerting every 13 months. Most recently, PSB Watch was updated on October 26, 2026 and MASD  Alerting on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*