Overview
TypeBoost is an AI writing assistant that works as a system-wide overlay on macOS, letting you apply custom AI prompts to any selected text in most apps—without copy-pasting or switching windows. Trigger it with a keyboard shortcut (Ctrl+Space), pick a saved prompt, and see the transformation happen inline. On iOS, TypeBoost serves as a companion app: you can generate text via Voice Mode, browse your prompt history, and keep your prompt library in sync with your Mac.
Used by 10,000+ freelancers, founders, and indie hackers, TypeBoost was built around a single idea: the real friction with AI isn't the model quality anymore, it's the constant workflow breakage from switching between apps and rewriting prompts. TypeBoost significantly reduces that friction by bringing the AI action directly into your current workspace.
Unlike browser-based writing tools, TypeBoost lives at the macOS level, which means it works inside your email client, note-taking app, CMS, and most other native applications that support selectable text. It requires Accessibility and Automation permissions on first launch; some restricted input fields or sandboxed apps may not be supported. You write where you write—TypeBoost just makes most of those keystrokes smarter.
Key Features
Works in most macOS apps — Select text in most macOS applications with selectable text and apply AI transformations directly (Accessibility and Automation permissions required; some restricted input fields may not be supported).
Custom prompt library — Save and reuse your own AI prompt templates tailored to your tone, style, and recurring tasks. Your prompts reflect your voice, not a generic AI default.
Keyboard-first workflow — Trigger TypeBoost with Ctrl+Space after selecting text. The entire interaction is designed for speed, keeping your hands on the keyboard and your focus on the work.
Before/after diff view — TypeBoost shows you the original and revised text side by side before anything is applied. You can then choose to replace the selection, insert the result above or below, copy to clipboard, or discard—giving you full control over every change.
Voice Mode — Press the voice shortcut to start recording; TypeBoost transcribes your speech and cleans up filler words, then lets you pick a prompt and insert the processed result—exactly like Text Mode, but hands-free.
Cross-device prompt sync — Prompts saved on macOS automatically sync to your iOS devices, so your personal writing toolkit is consistent whether you're on a Mac or iPhone.
Model choice — The free plan uses GPT-4o by default. Pro and higher plans add access to models from multiple providers (OpenAI, Anthropic, Google). The available model list and per-prompt model settings are managed inside the app.
Prompt Hub — Access a curated library of pre-built prompt templates covering common tasks like "Improve Email," "Fix Spelling & Grammar," "Shorten Text," "Make Text Formal," and "Translate to English."
Pricing & Plans
TypeBoost follows a freemium model, with a free tier available and no credit card required to get started.
| Plan | Price | What's Included | Best For |
|---|---|---|---|
| Free | €0/month | Free character credits, GPT-4o, core prompt features | Casual users, evaluating the tool |
| Starter | €5/month | Increased character quota, all core features | Freelancers, light daily use |
| Pro | €10/month | Higher character limits, multi-provider model choice (OpenAI, Anthropic, Google) | Power users, heavy writers |
Key pricing notes:
- No credit card required for the free plan
- All paid plans use a character-credit system; exact quotas are shown in-app
- Prices above reflect EUR monthly billing (docs.typeboost.ai). The main website may show USD pricing or annual-plan rates depending on your region—treat those as equivalent offers at different billing cadences
- Available for macOS and iOS
For the most current plan details and credit limits, visit typeboost.ai.
Best For
- Freelance writers and copywriters who work across multiple macOS apps and want consistent AI assistance without breaking their flow between email, Notion, and Google Docs.
- Founders and indie hackers who write frequently for marketing, support, and product copy and need a fast, inline AI layer rather than a full-featured writing suite.
- Professionals managing high email volume who want to apply tone and grammar improvements directly inside their email client with a single keyboard shortcut.
- Power users of native macOS apps who prefer keyboard-driven workflows and want AI productivity tools that don't require switching to a browser.
- iOS writers who want their custom prompt library synced and available on mobile without rebuilding their workflow from scratch.
FAQ
What is TypeBoost and how does it work?
TypeBoost is a macOS application (with an iOS companion app) that adds an AI writing layer on top of your system. On macOS, you select text in most apps, press Ctrl+Space, choose a saved AI prompt, and the result is applied inline—no copy-pasting required. On iOS, the app lets you generate text via Voice Mode, review prompt history, and keep your library synced with your Mac.
Is TypeBoost free to use?
Yes. TypeBoost offers a free plan with no credit card required. For heavier usage, paid plans start at €5/month with a credit-based system for AI actions.
Which devices and operating systems does TypeBoost support?
TypeBoost is available for macOS (Apple Silicon, Intel, and Universal builds) and iOS. There is currently no Windows or Android version.
How is TypeBoost different from using ChatGPT in a browser?
The key difference is workflow. With a browser-based tool, you copy text, switch to the browser, paste, prompt, copy the result, switch back, and paste again. TypeBoost removes most of those steps—it works directly inside whatever macOS app you're already using with a keyboard shortcut, keeping you in flow (Accessibility permissions required on first launch).
Can I use my own custom AI prompts?
Yes. TypeBoost's core value is its custom prompt library. You can create, save, and reuse prompts shaped to your specific tone, writing style, and recurring tasks. Prompts sync across all your macOS and iOS devices.
Does TypeBoost support voice input?
Yes, via Voice Mode. Press the dedicated voice shortcut to start recording; TypeBoost transcribes your speech and automatically removes filler words. The transcribed text is then handled the same way as typed text—you select a prompt, TypeBoost processes it, and you choose how to insert the result.
What AI models does TypeBoost use?
The free plan defaults to GPT-4o. Pro and higher plans unlock model choice across providers including OpenAI, Anthropic, and Google. The specific models available and any per-prompt switching options are managed inside the app settings.
How does TypeBoost handle AI output before inserting it?
After TypeBoost generates a result, it shows you a before/after diff so you can review the change. You then choose how to apply it: replace the selected text, insert above or below the selection, copy to clipboard, or discard. There is no per-word accept/reject—the output is reviewed and applied as a whole.
Is TypeBoost suitable for team use?
TypeBoost is primarily designed as a personal writing toolkit. Team features are not prominently documented. For team-oriented writing tools, you may want to explore AI writing assistants with collaboration features.
What are the best alternatives to TypeBoost?
For users who want browser-based AI text editing, AI rewriter tools offer a range of options. For fiction writers specifically, Sudowrite is a dedicated AI writing assistant. For a broader comparison of text generation tools, see our guide to the best AI text generators.
