Overview
Track which account you used on each site. Not a password manager — no passwords stored, no autofill.
Ever get to a login screen and think "wait… did I sign up with Google here, or an email? which email?" Loginbook is a simple, private notebook for exactly that. It keeps an inventory of the accounts you hold across the web — for each site you record the username or email, how you log in (email/password, Google, Kakao, Naver, Apple…), an optional self-written password HINT (never the password itself), the sign-up date, and any notes. Open the popup on a site and Loginbook shows you the account you used there. Loginbook is NOT a password manager: - It never stores your actual passwords and never auto-fills logins. - Everything stays on your own device (Chrome local storage). No account, no sign-in, no server. - Zero data leaves your browser — no analytics, no tracking, no external requests. What you can do: - Record accounts per site and instantly see "which account did I use here?" - Add several accounts in one go — a multi-row entry screen for setting up quickly or catching up in one sitting. - Filter by login method, sort, and search across everything. - Back up your inventory as a file you control — plain JSON, or a file locked with a password of your choice so it only opens for you. - Export a read-only text summary in your chosen language, and import from CSV — any passwords in an import are discarded, never saved. - Automatic safety copies are kept in your browser — if something goes wrong, restore one in a click. Recent changes can be undone, too. - Light / dark / system themes and an accent color picker. - Available in English, 한국어, 日本語, 中文, and Español. Loginbook is for organizing and remembering — a tidy ledger of your online accounts, right in your browser, entirely under your control. Loginbook is on Android too — find it on Google Play.
Details
- Version1.2.0
- UpdatedSeptember 4, 2026
- Offered bySGX ENM
- Size270KiB
- LanguagesEnglish
- Developer
Email
sgxenm@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Loginbook — Which Account Did I Use? has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Loginbook — Which Account Did I Use? handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
