Door Alert vs Digimarc Validate
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Door Alert
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.
- Unauthorized exit/entry detection
- Immediate audible alarm
- Optional silent email/SMS alerts
- Works with or without cellular
- Low battery usage
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Introducing Door Alert, an easy-to-use security solution for smartphones! Monitors for unauthorized exits or entries, alerting you immediately. Just start the app, place the phone against the door, and it’s ready! Visit DoorAlertApp.com for more ideas and uses. The app uses an audible alarm. Optional features include sending an alert silently through email or SMS gateway. An additional peace of mind for families with young kids. Works with or without a cellular account. Notes: • the app is intended to be an additional security measure, not a replacement to conventional home and travel solutions • silent alerts are sent as-is; while every attempt is made to ensure delivery, there may be situations outside our control which can prevent delivery • when running, battery usage is increased by less than 1% per hour
Digimarc Validate
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Digimarc’s Validate app enables employees, merchandisers, and brand inspectors to authenticate and submit reports on suspicious products in seconds using only their mobile phones. All the product authentication reports submitted by these trusted users are captured in the cloud to give real-time visibility into potential counterfeit activity, helping brand protection teams take action against counterfeiters.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Door Alert | Digimarc Validate |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 33 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 5 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | Russell Harper | Digimarc |
In-app purchases
Door Alert
No in-app purchases
Digimarc Validate
No in-app purchases









