PassLog - パスワード管理

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Everyone
10+
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Everyone
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About this app

No more memorizing password requirements.

"How many characters is the password for this system?"
"Are uppercase letters or symbols required?"
"I can't remember when I changed my last password..."
—PassLog solves all those problems.

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■ What is PassLog?

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PassLog is a password management app that saves system-specific password requirements as "rules" and automatically generates passwords that meet those requirements with a single tap.

Automatic recording of change history, compliance checks, encrypted backups—it takes care of all the hassle related to passwords.

Fully offline operation. No account registration required. You can use it the moment you download it.

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■ PassLog's 4 Promises
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◆ 1. Fully Offline & Device-Based
Data is stored only on your device. No data is sent to external servers, and no account registration is required.

◆ 2. Rule Generation + Compliance Check
Define rules with sections for letters, numbers, and symbols. Automatically generate passwords with a single tap, and easily check for any missing requirements with a 6-item compliance check.

◆ 3. Automatically Record Change History
Automatically saves the previous password, date and time, and reason for change when updating your password. This is a unique feature of PassLog, allowing you to review when and why you changed your password at any time.

◆ 4. Simple Freemium
Basic functions are free and immediately available. The Premium plan removes limits and removes ads. Existing data can be continued even after the expiration date.

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■ Main Features
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◆ Rule-Based Automatic Password Generation
Generate passwords with a single tap by structuring them into sections of letters, numbers, and symbols, and specifying the number of characters for each. In addition to mandatory requirements for uppercase/lowercase letters, numbers, and symbols, it also supports fixing the base string, a sequential counter for the number section, and preventing past password duplication. The sequential numbering function, which automatically increments each time you change your password, is convenient for those who want to keep track of the number of updates.

◆ 6-Item Password Compliance Check
Verifies in real time whether manually entered passwords meet the rules. Password requirements are checked based on six criteria: character count, uppercase letters, lowercase letters, numbers, symbols, and past password duplicates, allowing you to see missing conditions at a glance.

◆ Automatic Change History Recording
When you update your password, the previous password, change date and time, and reason for change (periodic change, security measures, initial settings, etc.) are automatically saved in the history. You can always review "when" and "why" you changed it.

◆ Share and Reuse Rules
Password requirements that differ for each system, such as "uppercase letters required," "at least 2 symbols," and "at least 12 characters," can be saved as rules. One rule can be shared across multiple systems, and rule changes are immediately reflected in the referenced systems.

◆ Password Management per System
Manage system name, login ID, password, and notes for each business system and web service in one place. It can be customized for easy viewing with icons, and you can quickly find what you're looking for with incremental search and workspace filtering.

◆ Workspaces
Classify and organize systems by purpose, such as work or personal use. Switch between them with a single tap from the header.

◆ Encrypted Backup (Export/Import)
Save all data as an encrypted backup file. Securely transfer data with a password-protected file when changing devices. Preview data overview before importing, and automatically roll back to protect existing data in case of failure.

◆ App Lock
Lock apps with a 4-digit PIN and biometric authentication (Face ID / fingerprint authentication). Supports automatic locking when returning from the background, ensuring the security of important password information.

◆ Dark Mode & Multilingual Support
Automatically switches according to system settings. Supports Japanese and English.

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■ Pricing Plans
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◆ Free
Up to 3 rules and 1 workspace (unlimited system registration). No account registration required; use immediately.

◆ Premium (Monthly/Annual Plan)
Unlimited rules and workspaces. Ads are also removed. Annual plans offer even greater savings.

◆ Peace of Mind After Cancellation
Continue using the Free plan even after your Premium subscription expires. Viewing, editing, copying, and deleting existing data remains possible; only new creation is limited to the free limit. We do not hold your data hostage.

* Please check the subscription screen within the app for pricing.
* Subscription billing, renewal, and cancellation are subject to the terms of the App Store / Google Play.

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■ Recommended for those who:
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・Use multiple systems and services and find management difficult
・Have difficulty remembering different password requirements for each system
・Need to change passwords regularly
・Find it troublesome to come up with a new password each time
・Want to keep a history of past password changes
・Want to stop reusing passwords
・Are looking for a secure password management app that works offline
・Want to securely transfer data when changing devices

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■ Security and Privacy
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◆ Encryption Protection
All password data is stored encrypted. It is never stored in an unencrypted state.

◆ Secure Key Management
The keys used for encryption are stored in a secure storage area provided by the OS. They are strictly protected by the device's security features.

◆ Fully Offline, No Server Required
Data is stored only on the device. No data is sent to external servers, and no account registration is required.

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■ Support & Inquiries
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Please feel free to contact us with any questions or requests.

Email: passlog.developer@gmail.com

Terms of Service: https://passlog.net/terms
Privacy Policy: https://passlog.net/policy

Make password management simpler with PassLog.
Password management app that also keeps a history
Updated on
Jul 1, 2026

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
  • No data collected
    Learn more about how developers declare collection

What’s new

PassLog - パスワード管理
パスワードの条件、もう悩まない。ルールに合ったパスワードをワンタップ生成、変更履歴も自動記録。完全オフライン・アカウント登録不要・基本無料で使えるパスワード管理アプリです。
Content rating
Everyone
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App support

About the developer
佐々木航平
sikakou0504@gmail.com
松ノ木3丁目4−11 AOBA103 杉並区, 東京都 166-0014 Japan

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