Protelion VPN vs PDF Editor Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protelion VPN
Securely connect your iOS device to a VPN using a proprietary data protocol. It offers symmetric encryption for data packets and requires encryption keys from your administrator to establish a connection.
- Secure VPN connection
- Proprietary data protocol
- Symmetric encryption
- Session-less approach
- UDP/TCP support
Read full descriptionHide full description
Protelion VPN is a client application that allows iOS devices to securely connect to a Virtual Private Network (VPN) built using the Protelion VPN technology. Protelion VPN operates on a proprietary data protocol that can be used over any TCP/IP network, utilizing UDP or TCP. Notably, Protelion VPN employs a session-less approach and provides symmetric encryption to safeguard every VPN data packet payload. To establish a connection to the actual VPN, it is necessary to install encryption keys. Kindly contact your Protelion VPN administrator to obtain the encryption keys file.
PDF Editor Studio
Read full descriptionHide full description
PDF Editor Studio is a powerful yet simple PDF editing tool designed for fast and professional document modifications. Whether you need to add text, cover sensitive information with white boxes, or adjust content placement, this app makes editing PDFs effortless. KEY FEATURES • Add custom text with adjustable font size and color • Move and resize text elements freely • Insert white boxes to hide content • Undo recent changes • Export and share edited PDFs instantly • Smooth scrolling multi-page PDF support Perfect for students, professionals, freelancers, and anyone who needs quick PDF edits on the go. No complicated tools. No subscriptions. Just clean and simple PDF editing. Start editing your PDFs today.
Screenshots
Verdict
The clearest difference is price: Protelion VPN at Free against PDF Editor Studio's $0.99. PDF Editor Studio's advantage is update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases, 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
Protelion VPN is free to download; PDF Editor Studio costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Protelion VPN ships an update every 4 months, PDF Editor Studio every 3 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.
| Parameter | Protelion VPN | PDF Editor Studio |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.3 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 44 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Protelion GmbH | StudyBridge LLC |
In-app purchases
Protelion VPN
No in-app purchases
PDF Editor Studio
No in-app purchases
Questions
Is Protelion VPN free?
Is PDF Editor Studio free?
Do Protelion VPN or PDF Editor Studio have ads?
Which is updated more often, Protelion VPN or PDF Editor Studio?
Other comparisons















