Simple Key Manage vs Watermark Secure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Key Manage
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Security doesn't have to be complicated. Simple Key Manage is built on one belief: protecting your keys shouldn't require a manual. We skip the bloat. No nested folders. No forced sign-ups. No features you'll never touch. Just a clean, fast place to store your keys—and get back to work.
Watermark Secure
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Protect your documents before sharing them. Watermark Secure: ID Guard helps you prepare photos of IDs, passports, forms, certificates, and other personal documents before sending or storing them. Add a visible watermark, hide sensitive details, crop the image, and export the final result as a JPG or PDF. Everything is processed locally on your device, so your documents are not uploaded to external servers. Key features: • Add custom watermarks to document photos • Choose watermark color, opacity, size, and position • Use repeated or single watermark mode • Obscure sensitive details with solid blocks or blur • Crop the image before exporting • Export as JPG or PDF • Adjust image size inside the PDF • Keep a private in-app history of generated files • Preview previous exports inside the app • Take a photo with the camera or choose one from your photo library Watermark Secure: ID Guard is useful when you need to share a copy of a personal document while making its intended use clear, such as “For verification only”, “For rental application”, or “For bank review”. Your documents stay under your control. The app does not use analytics, advertising, tracking tools, or third-party upload services. Application Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Watermark Secure at 17.0 against Simple Key Manage's 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.
| Parameter | Simple Key Manage | Watermark Secure |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 海 胡 | Ivan Alcaraz Sanchez |
In-app purchases
Simple Key Manage
No in-app purchases
Watermark Secure
No in-app purchases
Questions
Is Simple Key Manage free?
Is Watermark Secure free?
Do Simple Key Manage or Watermark Secure have ads?
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