# Periphery vs AlertCatcher

The clearest difference is ads: AlertCatcher at none against Periphery's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Periphery sells 4 in-app purchases, starting at $0.99 per 7 days and AlertCatcher sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Periphery ships an update weekly, AlertCatcher every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Periphery | AlertCatcher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/alertcatcher-smart-guardian/id6789208022/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grima Hdez](https://appshunter.io/developer/1741481582) | [Golden Sphere Solutions LLC](https://appshunter.io/developer/1895157724) |

## What reviewers say

### Periphery

[App page](https://appshunter.io/ios/app/periphery-bluetooth-scanner/id6785811488)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Periphery Pro Weekly | $0.99 | per 7 days |
| Periphery Pro Monthly | $1.99 | per month |
| Periphery Pro Yearly | $2.99 | per year |
| Periphery Pro Lifetime | $3.99 | one-time |


### AlertCatcher

[App page](https://appshunter.io/ios/app/alertcatcher-smart-guardian/id6789208022)

Transform old devices into private security monitors for your home or travel. It uses edge AI to detect sound anomalies and motion, sending instant alerts to your primary device without uploading data.

**Highlights:** Edge-AI sound classification, Local motion detection with video clips, On-demand live camera feed, Remote arm, disarm, and siren control, Discreet blackout mode, Evidence library with timeline, Interruption recovery

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AlertCatcher Premium | $9.99 | one-time |


## Frequently asked questions

### Is Periphery free?

Periphery is free to download, with in-app purchases available.

### Is AlertCatcher free?

AlertCatcher is free to download, with in-app purchases available.

### Do Periphery or AlertCatcher have ads?

Periphery shows ads; AlertCatcher does not.

### Which is updated more often, Periphery or AlertCatcher?

Periphery ships an update weekly, and AlertCatcher every 9 days. Most recently, Periphery was updated on October 24, 2026 and AlertCatcher on October 24, 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.*