4Login/Pass Manager and Login

In-app purchases
1K+
Downloads
Content rating
Everyone
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About this app

4Login comes packed with a variety of convenient features for logging in.
Just remember one secret “pattern,” and you can use it for all your logins.

■ Security
・Your personal information is encrypted and backed up on our servers.
・Because it is encrypted, even the operator (Passlogy) cannot view it.
・Even if your device is lost or damaged, you can restore your account as long as you remember your “pattern.”

■ Password Manager
・You can automatically generate a random password by selecting the character types and length.
・You can also choose a password based on Japanese hiragana converted into the Latin alphabet (e.g., “ka”, “shi”, …).
・Passwords are displayed on a 5×5 grid (“pattern”), so they remain unreadable even if someone sees your screen.
・Up to five password change history entries are retained.

■Auto-generate PINs for Your National ID Card
・Automatically generates the two (*) PINs required when you receive your national ID card.
・Meets the required rules for both PINs (character types and length).
・PINs are displayed on a 5×5 grid (“pattern”) like a cipher table, so they remain unreadable even if someone sees your screen.
・You can also register and manage existing PINs.
* Some countries define multiple PIN types. This feature covers the two commonly required ones: a 4-digit numeric PIN and a 6–16 character alphanumeric PIN.

■Two-Factor Authentication (2FA)
・You can add a one-time password (OTP) for 2FA by scanning a QR code. Manual entry is also supported.
・OTPs are displayed on a 5×5 grid (“pattern”) like a cipher table, so they remain unreadable even if someone sees your screen.
・You can also switch to the standard display mode.

■4Login Integrated Login
・Access advanced registration and sign-in features for software and websites integrated with 4Login (*).
・Register without creating a user ID or password.
・Sign in easily without entering a user ID or password.
・Start sign-in by scanning a QR code displayed on your PC screen with your smartphone.
* We provide a free integration API for service providers. Contact us for details.

■Enhanced Windows Logon Security — 4Login for Windows (Paid / In-app purchases)
・Use an additional authentication service for Windows sign-in, including Remote Desktop (RDP) connections.
・Enable multi-factor authentication (MFA) for Windows sign-in using your smartphone.

■Other Features
・Organize passwords and other items into groups.
・Reorder passwords and other items freely.
・Quickly find items with search.
・Store secure private notes.
・Customize the design of the password display screen to your liking.
・All features are completely free except the Windows logon security enhancement feature.
Updated on
Dec 10, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

What’s new

What’s New in Version 5.2.0

■ Added
・URL display on the slot detail screen
・Password history
・In-app review submission
・Support for Simplified and Traditional Chinese
・Screen privacy protection feature

■ Improvements & Updates
・UI optimization
・Enhanced usability
・Improved convenience and responsiveness
・Greater stability
・Updated the password copy validity period to 60 seconds

■ Bug Fixes
・Fixed multiple issues to improve overall performance and reliability

App support

About the developer
PASSLOGY CO., LTD.
ps-info@passlogy.com
1-6-1, KANDAJIMBOCHO TAKII TOKYO BLDG. 7F. CHIYODA-KU, 東京都 101-0051 Japan
+81 3-5283-2263