WunderType vs TextWisely: Which Mac AI Writing Assistant Fits Your Workflow?

TextWisely and WunderType are two takes on the same idea: AI writing help that lives inside every Mac app instead of a browser tab. Both let you select text in Mail, Slack, or Notes, hit a keyboard shortcut, and get a cleaner version back — no copy-paste, no ChatGPT window. But they make very different bets on how that should work, which AI you should use, and how you should pay for it. TextWisely leans into breadth: many AI providers, custom personas, follow-up actions, and a subscription that bundles the AI for you. WunderType leans into simplicity: pure in-place text replacement, a built-in on-device model, and a single $8.99 purchase on the Mac App Store. Here is how they compare in practice.

At a glance

	WunderType	TextWisely
Workflow	Select text, press shortcut, text is replaced in place in any app	Instant actions via shortcut, plus an assistant flow with follow-up actions
AI providers	On-Device AI (Apple MLX), Ollama, OpenAI (your key), OpenRouter	Long list advertised: ChatGPT, Claude, Gemini, DeepSeek, Grok, Groq, Mistral, local models via Ollama, any OpenAI-compatible API
Local / on-device	Built-in on-device MLX models, no setup; Ollama also supported	Local LLM support via Ollama
Pricing	$8.99 one-time, all features, no subscription	$5/month, $48/year, or $29 one-time with 1 year of updates (bring your own API key on the one-time plan)
Privacy	No accounts, zero analytics or telemetry, App Sandbox, no backend server	States it does not store or sell submitted text; local models available for offline use
Distribution	Mac App Store	Direct download, licensing via a customer portal
Platform	macOS 15+, native Swift/SwiftUI, under 5 MB memory	macOS 15+ (Sequoia or newer)

How the workflows differ in practice

Both apps start the same way: select text anywhere on your Mac and press a shortcut. What happens next is where they diverge.

WunderType is strictly in-place. Press your shortcut for Correct Grammar, and the selected text is rewritten directly inside the app you are in — Mail, Notes, Slack, Chrome, even VS Code — using the macOS Accessibility API. There is no result window to review, accept, or dismiss. It ships with five built-in modes (Correct Grammar, Improve Writing, Make Concise, Make Formal, Make Casual), and you can add unlimited custom prompts, each with its own dedicated shortcut. A prompt like “translate to German” or “rewrite as a friendly support reply” becomes a single keystroke you use without thinking.

TextWisely blends instant actions with an assistant flow. Its instant actions handle quick fixes in a similar spirit, but for more involved edits it offers richer actions with context, custom personas that shape the tone of the output, and follow-up actions that let you refine a result — make it shorter, change the tone again, try another angle — without re-selecting the text. If you like iterating on AI output before committing, that back-and-forth is genuinely useful, and it is something WunderType deliberately does not do.

Concrete example: you have a blunt Slack message drafted. In WunderType, you select it, press your Make Casual shortcut (or a custom “soften this” prompt), and the message is instantly rewritten where it sits — done in about a second. In TextWisely, you can run a similar instant fix, or invoke an action with a persona applied, then chain a follow-up (“now make it shorter”) before you are happy with the result. WunderType optimizes for zero friction on the 95% case; TextWisely gives you more control on the harder 5%. We drew a similar contrast in our WunderType vs RewriteBar comparison — tools that add a review step trade speed for flexibility, and which side of that trade you prefer is largely personal.

Pricing compared

TextWisely offers three options: $5 per month, $48 per year, or a $29 one-time license. The details matter, though. The subscription is all-inclusive — TextWisely handles the AI for you, so you never touch an API key, which is genuinely convenient. The one-time license works differently: you bring your own API key (or run local models), and it includes one year of updates, after which you keep the version you have. There is no free trial, but the one-time purchase carries a 14-day money-back guarantee.

WunderType is simpler: $8.99 once on the Mac App Store, every feature included, no update clock and no subscription tier at all. There is no bundled cloud AI — you either use the built-in on-device models (free, unlimited, offline), run Ollama, or plug in your own OpenAI or OpenRouter key. For most people using on-device AI or an API key that costs pennies a month, total cost of ownership stays in single digits. If the pay-once model is what draws you to either app, our roundup of one-time purchase AI apps for Mac covers how these licenses differ in the fine print — and the update-window question is exactly the kind of fine print worth reading.

Where TextWisely wins

• Provider breadth. TextWisely advertises support for ChatGPT, Claude, Gemini, DeepSeek, Grok, Groq, Mistral, local models, and any OpenAI-compatible API. WunderType covers four providers (On-Device, Ollama, OpenAI, OpenRouter) — OpenRouter reaches most frontier models indirectly, but if you want a first-party Claude or Gemini connection, TextWisely has it.
• Personas. Custom personas that consistently shape your tone of voice across actions are a real feature WunderType does not have. WunderType’s custom prompts can encode tone, but personas are a cleaner abstraction if you switch voices often.
• Follow-up actions. The ability to iterate on a result — shorten it, shift tone, try again — without starting over suits people who treat AI edits as a conversation rather than a one-shot fix.
• Key-free subscription. On the $5/month plan you never create an API account anywhere. For non-technical users, that is a lower barrier than any bring-your-own-key setup.

Where WunderType wins

• True in-place replacement, everywhere. One shortcut, and the text changes where it sits — no result panel, no insert step. For high-frequency corrections this is the fastest workflow on macOS.
• Built-in on-device AI. WunderType ships with Apple MLX on-device models out of the box — no Ollama install, no model management, no API key, and it works offline. TextWisely’s local option requires setting up Ollama yourself. For a plug-and-play private setup, WunderType is ready the minute you install it.
• Privacy architecture, not just policy. WunderType has no accounts, no analytics or telemetry, no clipboard monitoring, and no backend server — cloud requests go directly from your Mac to the provider, with keys stored in the macOS Keychain. TextWisely’s privacy policy is reassuring, but its subscription plan routes your text through its service by design. If privacy is your deciding factor, our guide to grammar checking on a Mac goes deeper on why architecture beats promises.
• App Store distribution. WunderType is sandboxed, reviewed by Apple, and updated through the Mac App Store — with purchases and refunds handled by Apple rather than a third-party license portal.
• Price. $8.99 once versus $29 once (with a one-year update window) or $48 per year. Over three years, the gap is significant.
• Footprint. Native Swift/SwiftUI and under 5 MB of memory — it disappears into the menu bar.

What’s better than Grammarly on a Mac?

Search interest around both apps keeps circling back to this question, and it is worth answering directly: both TextWisely and WunderType are credible Grammarly replacements for Mac users, because both fix the two things Mac users complain about most — Grammarly’s subscription pricing and its cloud-first architecture. Grammarly still wins on real-time underlining as you type and on team features. But if your actual usage is “select a sentence, make it correct or better,” a lightweight native tool with a shortcut does the job faster and more privately. We ran the full comparison in WunderType vs Grammarly, and if you want the wider field, our roundup of the best AI writing apps for Mac covers where TextWisely, RewriteBar, and others each fit.

Verdict

Choose TextWisely if you want the widest choice of AI providers, you like refining output through follow-up actions and personas, or you prefer a $5/month plan where the AI is bundled and you never touch an API key. It is a capable, actively developed tool, and its assistant-style flow suits deliberate editors.

Choose WunderType if you want corrections to happen in place with a single keystroke, you value on-device AI that works without any setup, you care about a no-accounts, no-telemetry architecture, or you simply want to pay $8.99 once on the Mac App Store and be done. For everyday grammar fixes and quick rewrites across every app on your Mac, it is the more direct tool at a fraction of the price.

Download WunderType from the Mac App Store