Comparison

Secure VPN vs Greybox Tool

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Secure VPN

This app offers a fast and secure VPN service to protect your online activity. It encrypts your connection, keeps your data safe on public Wi-Fi, and ensures privacy with a no-logs policy. Enjoy a simple, one-tap connection for enhanced online security.

Highlights
  • High-speed VPN servers
  • No registration required
  • AES-256 encryption
  • Strict no-logs policy
  • One-tap connection
  • Wi-Fi, LTE, 4G, 5G compatible
Features
Read full description

Secure VPN provides fast and reliable VPN service to help you stay private and safe while browsing the internet. Whether you're using public Wi-Fi, accessing work content remotely, or just want extra protection, Secure VPN keeps your connection encrypted and your data secure. Key Features: High-speed VPN servers across multiple regions No registration or login required AES-256 level encryption for data protection Strict no-logs policy One-tap to connect, easy to use Compatible with Wi-Fi, LTE, 4G, and 5G Use Secure VPN to keep your personal information safe and enhance your online security. Simple, powerful, and private. Privacy Policy: https://thsoftware.cloud/policy.html Terms and Condition: https://thsoftware.cloud/terms.html Read more about Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Greybox Tool

A utility for developers to understand ad network operations. It allows manual triggering of postbacks and viewing device identifiers for debugging and attribution tracing. Developers can also inspect SKAdNetwork requests and postback content.

Highlights
  • Manual postback triggering
  • View device identifiers (IDFA, IDFV)
  • Inspect SKAdNetwork requests
  • Share debugging information
  • Analyze ad network processes
Read full description

Greybox Tool is a simple tool application for developers to know how ad network works. For ad network developers, you can: - Advertise this simple app in the delivery system, and trigger postback manually to see what happens during the advertising process step by step. - View and share the device identifiers for further debugging and attribution tracing. For app developers, you can: - View and share device details such as IDFA and IDFV. - See SKAN requests and postback content in different ad networks without developing a new application. - View and share the device identifiers with ad network tech supports for further debugging.

Screenshots

Secure VPN4 screens
Greybox Tool1 screens

Verdict

The call

The clearest difference is rating: Secure VPN at 4.4 against Greybox Tool's 2.5. Secure VPN also leads on ratings volume (350 vs 2). Greybox Tool's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Secure VPN sells 7 in-app purchases, starting at $3.99 per 7 days. Greybox Tool asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Secure VPN holds the better App Store score, 4.4 against 2.5. That said, the two scores are not equally well evidenced: Secure VPN has 350 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Secure VPN ships an update every 10 days, Greybox Tool every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Secure VPN versus Greybox Tool: the parameters behind the verdict, then further details
ParameterSecure VPNGreybox Tool
PriceFreeFree
Rating4.4 (350 ratings) — better2.5 (2 ratings)
Positive reviews55.0% of reviews—
Number of ratings350 — better2
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size112 MB19 MB
Age rating4+17+
DeveloperDUY KY TRADING PRODUCTION ONE MEMBER COMPANY LIMITEDYunfeng Wei

Customer experience

Secure VPN

All ratings92 ratings
Positive79.3%
Neutral7.6%
Negative13.0%
Written reviews20 reviews
Positive55.0%
Neutral10.0%
Negative35.0%

Greybox Tool

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

7 purchases

Secure VPN

Subscriptions6
  • Weekly$3.997 Days
  • Monthly$7.991 Month
  • Monthly1 Month trial$9.991 Month
Show 3 more
  • 6 months$49.996 Months
  • Yearly$79.991 Year
  • Yearly3 Days trial$79.991 Year
One-time1
  • Remove ads$1.99
None

Greybox Tool

No in-app purchases

Questions

Is Secure VPN free?
Secure VPN is free to download, with in-app purchases available.
Is Greybox Tool free?
Greybox Tool is free to download, with no in-app purchases.
Which has better reviews, Secure VPN or Greybox Tool?
Secure VPN is rated higher. Secure VPN averages 4.4 out of 5 from 350 ratings, while Greybox Tool averages 2.5 from 2 ratings.
Do Secure VPN or Greybox Tool have ads?
Secure VPN shows ads; Greybox Tool does not.
Which is updated more often, Secure VPN or Greybox Tool?
Secure VPN ships an update every 10 days, and Greybox Tool every 2 weeks. Most recently, Secure VPN was updated on November 2, 2026 and Greybox Tool on November 3, 2026.

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