SidePen brings AI directly into a calm, distraction-free editor. No copy-paste. No tab-switching. Just you and your AI coworker.
AI lives inside your document. It reads what you've written and continues your thought — no prompts, no copy-paste.
The quarterly report needs to cover three main areas: revenue growth, customer acquisition, and product updates.
AI continuing... Let me expand on each section with specific metrics and highlights from Q4...
Type a slash and tell AI what to do. Expand a bullet point into a paragraph, summarize a section, change tone — all without leaving your editor.
/expand — Turn a sentence into a full paragraph
/summarize — Condense a section into key points
/rewrite — Rephrase with a different tone or style
/ask — Ask AI anything about your document
Not sure where to start? Our brainstorm flow asks the right questions to understand your vision, then creates a tailored first draft — so you never face a blank page alone.
Hear your writing spoken back to you. Catch awkward phrasing, clunky rhythm, and sentences that trip over themselves — before your readers do.
Let me read that back to you! Sometimes a sentence looks perfect on screen but stumbles when it's spoken. I'll say your words out loud so you can hear what your reader will feel — the rhythm, the pauses, the parts that sing and the parts that snag. If it rolls off my tongue, it'll roll off theirs.
Every template is pre-configured with the right role, tone, audience, and format — so AI understands your intent from the first word.
Marketing & Content
Product & Engineering
HR & People Ops
Project Management
Strategy & Planning
Sales & Business Dev
UX & Design
Operations & Process
Legal & Compliance
Research & Academic
General
Internal Comms
Role
Tone
Audience
Format
Length
Frameworks
Most writing tools are cluttered with menus, panels, and options you'll never use. SidePen strips it all away. What's left is a calm space for your words — and an AI assistant that appears only when you need it.
No toolbar hunting. No settings rabbit holes. Just you, your thoughts, and the gentle presence of an AI coworker ready to help when you ask.
Context-switching kills creativity. When AI lives in your document, you keep writing — no tabs, no paste, no friction. The UI disappears until you need it.
Start with a thought. Let AI help you expand, refine, and polish — all without leaving your editor.
Stuck? Your AI coworker is right there with suggestions, continuations, and ideas that match what you've already written.
No clutter. No distractions. The UI fades away so you can focus on what matters: the words on the page.