Home / Operation Manual

Account & Settings

Manage your account and customize app appearance and behavior.

You can use the app without signing in

Creating, editing, searching, tagging, linking notes and the graph all work without an account. Help Chat works too.

What signing in unlocks

• Automatic sync and backup across devices
• AI features (chat, quizzes, summaries, tag generation, text extraction, URL summaries)
• Buying a Premium plan and restoring it on a new device
• Connectors (MCP)

Sign in with Google or Apple. The notes you already wrote on this device carry over.

To change theme and font

1. Open the side menu → "Settings" → Appearance section
2. Theme mode: Light, Dark, or Follow system
3. Color theme: Choose from 10 colors
4. Font: In addition to the bundled default (Noto Sans CJK JP), choose from 15 Japanese / 14 English fonts

To change language

1. Open Settings → Appearance → "Language"
2. Choose from: English, Japanese, Korean, French, German, Spanish, Portuguese, or reset to device setting

To configure data management

1. Open Settings → "Data Control"
2. Configure: auto-save, auto-sync, AI data sending, trash retention

• Trash retention: 7 days, 30 days, 60 days, 90 days, unlimited, custom

To check your AI usage

1. Open the side menu → "Account"
2. The "AI usage" card shows your usage for the last 6 hours and this week

※ Just below the title you can see when those numbers were fetched ("As of ..."). Tap the reload button at the top right of the card to update them (for example right after using AI).

To manage your subscription

1. Open Settings → "Manage Subscription"

Note: there are two places to subscribe: the app (iOS / Android) and your browser (the web app). Either way, Premium works on all your devices. Note: you cannot subscribe in both at once. If you are already subscribed somewhere, buying from the other place is blocked. To switch, cancel where you are subscribed and buy again once it has expired. Note: where you cancel depends on where you subscribed — the App Store / Google Play management screen for app purchases, or Manage Subscription on the subscription screen for web purchases. The subscription screen shows where you purchased.

To delete your account

1. Account page → Tap "Delete Account"

※ Account deletion cannot be undone. Active subscriptions must be canceled first. Custom fonts require a one-time download.