Sterna Vault vs PDF Compressor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sterna Vault
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Sterna Vault redefines the way you access your safelock — combining advanced security with effortless convenience. With powerful face verification and OTP-based authentication, your vault stays protected and only opens for you.
PDF Compressor
Easily reduce the size of PDF files without sacrificing quality. Organize documents with folders and import PDFs instantly. Ideal for students, professionals, and anyone needing to manage digital documents efficiently.
- Ultra-efficient PDF compression (up to 98%)
- High-quality output
- Simple file picker
- Built-in folder organization
- Fast, intuitive interface
- Works offline
- Share compressed PDFs (Premium)
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PDF Compressor – PDFpress Effortlessly shrink your PDF files without losing clarity. PDFpress is the fastest, simplest way to compress, organize, and manage your documents-perfect for students, professionals, and anyone who deals with PDFs on the go. Why PDFpress? Compress Up to 98% - Reduce file sizes drastically while preserving crisp, readable quality. Send documents faster, free up storage, and keep everything running smoothly. Organize with Folders - Create custom folders directly inside the app to keep your PDFs neat, structured, and easy to find. Import PDFs Instantly - Pick any PDF from your device and compress it in seconds. No accounts, no complexity-just tap and go. Perfect For: Students submitting assignments Professionals sending reports or contracts Anyone wanting to save storage space People who value a clean, organized document library Key Features: Ultra-efficient PDF compression (up to 98% size reduction) High-quality output with no visible loss Simple file picker for instant PDF selection Built-in folder creation and organization Fast, intuitive interface Works offline-your files stay on your device Share compressed PDFs (Premium feature - requires in-app purchase) Premium: Unlock the ability to share your compressed PDFs via email, messaging, cloud services, and more Take control of your documents with PDF Compressor – PDFpress. Fast. Clean. Powerful. Download now and compress smarter. Privacy Policy: https://sites.google.com/view/madbyteapps/pdfpressprivacypolicy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Sterna Vault at none against PDF Compressor's 3. Sterna Vault also leads on update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement 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. PDF Compressor sells 3 in-app purchases, starting at $4.99 per 7 days. Sterna Vault asks for nothing beyond the download.
Sterna Vault ships an update every 3 weeks, PDF Compressor every 3 months. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.
| Parameter | Sterna Vault | PDF Compressor |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 67 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Sterna Security Devices Private Limited | Imad Khan |
In-app purchases
Sterna Vault
No in-app purchases
PDF Compressor
- Weekly Premium3 Days trial$4.997 Days
- Yearly Premium$19.991 Year
- Lifetime Premium$12.99
Questions
Is Sterna Vault free?
Is PDF Compressor free?
Do Sterna Vault or PDF Compressor have ads?
Which is updated more often, Sterna Vault or PDF Compressor?
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