MyMetraKey vs SafeOpen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MyMetraKey
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The MyMetraKey (MMK) app gives you the freedom to remotely book, use and manage your Metra smart locker via your smartphone. With one click your locker will unlock and the locker doors will spring open (or unlock, in case of using Metra's push-open smart lock). Remote, touchless and secure. Almost magic like. The MMK gives total freedom to both staff and management. Pre-book/allocate a locker to have one waiting for you on arrival, assign cleaning and/or maintenance of your lockers, and also open your locker for other staff members when working remotely (or when on a well-deserved vacation). Use the MMK app in your office, school, hospital and elsewhere as a sole 'key' for your locker or in combination with your access card/badge. The MMK app can be used with personal and shared/group lockers (when you have access to a group locker). The MMK app is suitable for all working and other environments, from traditional to highly dynamic ones (ABW).
SafeOpen
This app scans QR codes and links using your device's camera or by pasting a URL. It analyzes the destination for potential risks like phishing or malware, providing a risk level and explanation before you decide to open it. Features include on-device risk scoring and an optional AI summary of page content.
- QR code scanning via camera
- Link checking by pasting URLs
- On-device risk scoring
- Risk level with explanations
- Optional AI page summaries
- Local scan history
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SafeOpen tells you what's behind a QR code or link before you tap. Open it. Don't open it. You decide. That sticker on the parking meter, the gas pump, the bathroom door — you don't know where it goes. Could be a real menu. Could be a fake. Could be a phishing page. Could be malware. Kids especially scan first and think later. SafeOpen scans the code with your camera, shows you the destination URL, and runs a safety check on your device — looking for known phishing patterns (fake login pages, look-alike domains, urgent-action prompts, suspicious URL structure). You see a Risk Level (Low, Caution, High, Unknown) with a plain-English explanation. Then you decide whether to open. WHAT IT DOES • On-device risk scoring — your scan never leaves your phone • Camera scanner for QR codes • Paste-a-link checker for sketchy URLs from messages or email • Scan history kept locally (free for the last 10, unlimited with credits) • Optional AI page summary so you know what's there before you commit (credit packs) WHAT WE WON'T PRETEND TO DO • No third-party reputation database. We don't ping Google Safe Browsing or paid threat feeds. Verdicts are heuristic, on your device, based on URL and content patterns. Treat them as "should I be careful?" — not a guarantee. • No account. No login. No tracking. The scanner is free and uses no network. • No screenshot preview of the destination — that's a future release. CREDIT PACKS (optional — scanning is free) • Starter: 100 credits at $0.99 • Standard: 500 credits at $3.99 • Power: 2,000 credits at $9.99 1 credit = 1 AI page summary. Credits never expire. PRIVACY The scanner runs locally. No account, no email, no history kept off-device. AI summaries (when you spend a credit) fetch the page through our backend — that request is short-lived and not tied to your identity. Built by Katafract LLC. Part of the Enclave platform.
Screenshots
Verdict
The clearest difference is in-app purchases: MyMetraKey at none against SafeOpen's 3. MyMetraKey also leads on iOS requirement (12.1 vs 17.0). SafeOpen's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads 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. SafeOpen sells 3 one-off in-app purchases. MyMetraKey asks for nothing beyond the download.
MyMetraKey ships an update every 2 months, SafeOpen every 3 weeks. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.
| Parameter | MyMetraKey | SafeOpen |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Metra d.o.o. | Katafract LLC |
In-app purchases
MyMetraKey
No in-app purchases
SafeOpen
- 100 Scan Credits$0.99
- 500 Scan Credits$3.99
- 2,000 Scan Credits$9.99









