# Door Alert vs Digimarc Validate

The clearest difference is update cadence: Digimarc Validate at every 6 weeks against Door Alert's every 33 months. Door Alert's advantage is iOS requirement (15.0 vs 26.2). 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.

Door Alert ships an update every 33 months, Digimarc Validate every 6 weeks. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Door Alert | Digimarc Validate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/door-alert/id1076093852/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 5 MB | 46 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Russell Harper](https://appshunter.io/developer/581673732) | [Digimarc](https://appshunter.io/developer/348205304) |

## What reviewers say

### Door Alert

[App page](https://appshunter.io/ios/app/door-alert/id1076093852)

This utility app acts as a simple security monitor for your smartphone. It detects unauthorized door entries or exits and notifies you immediately. It's designed to offer an extra layer of security for families with young children.

**Highlights:** Unauthorized exit/entry detection, Immediate audible alarm, Optional silent email/SMS alerts, Works with or without cellular, Low battery usage

**Features:** macOS Compatibility

**In-app purchases:** none


### Digimarc Validate

[App page](https://appshunter.io/ios/app/digimarc-validate/id6711345278)

**In-app purchases:** none


## Frequently asked questions

### Is Door Alert free?

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

### Is Digimarc Validate free?

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

### Do Door Alert or Digimarc Validate have ads?

Neither Door Alert nor Digimarc Validate shows ads.

### Which is updated more often, Door Alert or Digimarc Validate?

Door Alert ships an update every 33 months, and Digimarc Validate every 6 weeks. Most recently, Door Alert was updated on October 10, 2026 and Digimarc Validate on September 30, 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.*