Comparison

Greybox Tool vs LocalPass

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

Head to head
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.

About

LocalPass

This app offers a secure, open-source solution for managing passwords and sensitive notes. It features strong encryption, biometric authentication, and autofill capabilities to simplify your digital life while prioritizing privacy.

Highlights
  • Data Encryption (AES)
  • PBKDF2 Key Derivation
  • Secure Notes Storage
  • Biometric Authentication
  • Autofill Support
  • TOTP Support
Features
Read full description

LocalPass is a forever free, ad-free, and open-source solution for managing your passwords, secure notes, and more, with an unwavering emphasis on data encryption and security. With a range of useful features, LocalPass simplifies your digital life while ensuring your information is kept private and secure. Key Features: - Data Encryption: All of your data is always encrypted, using strong AES encryption. Your sensitive information remains indecipherable to anyone without the encryption key. - PBKDF2 Key Derivation: LocalPass employs industry-standard PBKDF2 key derivation with 100k iterations, to ensure that your master password is securely transformed into the encryption key, making it virtually impossible for anyone to reverse engineer. The encryption key is also rotated every time you enter your password. - Secure Notes: In addition to password management, LocalPass allows you to store secure notes. Personal information, and other sensitive data are all encrypted, giving you peace of mind. - Biometric Authentication: Access your data with ease using biometric authentication, ensuring a seamless and secure experience. - Autofill Support: LocalPass supports credential autofilling in Safari and your favorite apps! Just make sure to enable it in your device's settings under 'Passwords' > 'Password Options' > 'Allow Filling From: LocalPass!' - TOTP Support: LocalPass supports Time-Based One-Time Passwords (TOTP) for multifactor authentication. - No User Data Collection: LocalPass is built with a commitment to privacy. LocalPass does not collect any personal data whatsoever and does not talk to any external data servers. It only ever talks to the internet if you have account icons or iCloud sync enabled. - iOS Development Enthusiasts: LocalPass is an open-source personal project, created by a Computer Science student. If you are an iOS developer and enjoy using LocalPass, consider exploring the codebase and submit a pull request to enhance the security and features of LocalPass. Coming Soon: - iCloud Sync (Optional): While your data is protected by encryption on your device, LocalPass will provide the option to sync your encrypted data with iCloud between devices for convenience. Only encrypted data will ever be stored in iCloud, just like on your device. - Recycle Bin (Optional): Mistakenly delete something? The recycle bin will help you recover that data securely. - Password Change Reminders (Optional): Stay secure with password change reminders at your chosen frequency. - Folders: Help organize your passwords and secure notes with customizable folders. - Secure Storage for Credit Cards and IDs: Store credit cards, ID numbers, or whatever you'd like! This will also include support for autofilling credit card details. - Enhanced iPad Support: LocalPass v1.0 has been designed with the iPhone in mind, however better support for iPad (and Mac running as an iPad app) is coming! No native MacOS app is currently planned. Thank you for using LocalPass!

Screenshots

Greybox Tool1 screens
LocalPass4 screens

Verdict

The call

The clearest difference is update cadence: Greybox Tool at every 2 weeks against LocalPass's every 3 months. On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Greybox Tool ships an update every 2 weeks, LocalPass every 3 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

Scorecard1 real difference · 9 level
Greybox Tool versus LocalPass: the parameters behind the verdict, then further details
ParameterGreybox ToolLocalPass
PriceFreeFree
Rating2.5 (2 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size19 MB3 MB
Age rating17+4+
DeveloperYunfeng WeiReubWare Ltd

Customer experience

Greybox Tool

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

LocalPass

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Greybox Tool

No in-app purchases

None

LocalPass

No in-app purchases

Questions

Is Greybox Tool free?
Greybox Tool is free to download, with no in-app purchases.
Is LocalPass free?
LocalPass is free to download, with no in-app purchases.
Do Greybox Tool or LocalPass have ads?
Neither Greybox Tool nor LocalPass shows ads.
Which is updated more often, Greybox Tool or LocalPass?
Greybox Tool ships an update every 2 weeks, and LocalPass every 3 months. Most recently, Greybox Tool was updated on September 18, 2026 and LocalPass on June 1, 2026.

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