AI Writing and Insights

Octarine for iPhone can create text at the cursor, rewrite a selection, and answer questions about the note you have open. These tools use a model and API provider you choose.

Set Up a Provider

Open Settings → AI, then:

1. Choose a provider and enter its API key. Octarine validates the key before saving it.
2. Return to the AI page and open Selected Model.
3. Choose a text model from one of the providers you connected.

The iPhone app currently supports OpenAI, Anthropic, DeepSeek, Google Gemini, Groq, Mistral AI, Perplexity, Together AI, and xAI. You can connect more than one provider and switch the selected model at any time. Use the refresh button in the model picker if a newly available model does not appear.

API keys are stored securely on the device. Removing a provider's key disconnects it and clears the selected model if that provider was active.

Create Text at the Cursor

Place the cursor where the new text should appear, then tap the sparkle button in the keyboard toolbar. Describe what you want to create and send the instruction.

Octarine uses the full current note, including its title, as context. This makes prompts such as these useful:

• "Add a short conclusion."
• "Turn the open tasks into a plan for tomorrow."
• "Write an introduction that matches the rest of this note."

The generated Markdown is inserted at the cursor. Tap Stop while Octarine is working if you do not want to finish the request.

Rewrite Selected Text

Select text in the editor and tap the sparkle button. Enter your own instruction, or open Rewrite options and choose one of the built-in actions:

• Proofread
• Rewrite
• Friendly
• Professional
• Concise

Octarine replaces the selection with the generated Markdown and preserves structures such as headings, lists, tasks, links, and tables where possible. If the selected text changes while the model is working, Octarine leaves it alone and asks you to select it again.

Chat With the Open Note

Tap the sparkle button in the editor header to open Insights. Start with Summarize this note, Surface open questions, or Suggest next steps, or type your own question.

Insights sends the current note as context and keeps the conversation associated with that note. You can:

• Ask follow-up questions.
• Stop or retry a response.
• Copy a response.
• Close Insights and return to the saved conversation later.
• Start a new chat, which permanently clears the chat saved for that note.

Insights only knows about the open note. It does not search other notes, follow links, or use the workspace-wide index. For questions across your workspace, use Ask Octarine on desktop.

Privacy and Context

Creating text sends your instruction and the full current note to the selected provider. Rewriting sends your instruction and selected text. Insights sends the current note and the conversation for that note.

Your notes remain Markdown files in the workspace. Chat history is saved locally for each note, while prompts and note context are processed according to the selected provider's terms and retention policy.

Quick Answers