Comparison
CapyBro vs Wordtune
A $19 one-time Windows tray utility that rewrites text in any app, versus a polished cloud subscription that lives in your browser and on your iPhone.
I am Roman, the solo .NET developer who built CapyBro, so treat this as a comparison written by an interested party, not a neutral lab. I have tried to be genuinely fair and to verify Wordtune's current pricing and features before writing. CapyBro and Wordtune solve overlapping problems in opposite ways: CapyBro is a Windows-only desktop tool that rewrites whatever you select with a global hotkey, using your own AI key or a fully local model, for a single $19 payment. Wordtune is a mature, well-funded cloud product with a polished browser experience, an iOS app, a powerful summarizer, an "Ask AI" assistant, and a subscription. Neither is strictly better. This page lays out where each one wins, including the places Wordtune clearly beats CapyBro, so you can pick the right one for how you actually work.
CapyBro vs Wordtune at a glance
| Feature | CapyBro | Wordtune (Advanced/Unlimited) |
|---|---|---|
| Pricing model | Free core (MIT). Pro is $19 one-time, never a subscription | Subscription: Advanced $6.99/mo, Unlimited $9.99/mo (about $4.89 and $6.99/mo billed annually) |
| Free tier | Entire core workflow, unlimited, forever | 10 rewrites/day, 3 summaries/month |
| Platform | Windows 10/11 x64 only (native .NET 8 / WPF) | Browser extension (Chrome, Edge, Firefox, Arc), web app, iOS app |
| Mobile app | None | iOS app (no Android yet) |
| Works in any desktop app | Yes: Word, Outlook, VS Code, Telegram, Discord, Steam, any text field | Mainly web pages and browser fields; no native desktop coverage |
| How you trigger it | Global hotkey (Ctrl+Shift+E) on selected text | In-browser popup / overlay as you type or select |
| Offline / local AI | Yes, via Ollama: text never leaves your PC | No: cloud-only processing |
| Choice of AI model | Dozens via OpenRouter (GPT-4o, Claude, Gemini, DeepSeek, Llama) or any local model | Wordtune's own models; you do not pick the model |
| Account required | No account, no sign-up | Account required |
| Telemetry / analytics | Zero telemetry, no analytics, no account | Cloud SaaS: requires an account and uses product analytics |
| Summarize articles / PDFs / video | No | Yes (articles, URLs, PDFs, YouTube via Wordtune Read) |
| Grammar + spell suggestions while typing | No live checking; rewrites on demand | Yes, inline as you write |
| Generative / brainstorm assistant | No; rewrites existing selected text only | Yes: Ask AI, Spices co-writer, template-based generation |
| Custom prompts | Unlimited user-defined prompts, optional per-prompt model | Mostly preset actions (rewrite, tones, expand, shorten) plus Ask AI prompts |
| Local history | Last 50 runs, with diff preview and editable result | No equivalent local-first history |
| Open source | Yes, MIT core on GitHub | No, proprietary |
The full story
Is CapyBro a real free alternative to Wordtune?
For the core job of rewriting, fixing, paraphrasing, and translating selected text, yes. CapyBro's free MIT core does that whole workflow with no daily cap, no account, and no subscription. You bring your own AI key or run a local model, so the rewriting itself is effectively unlimited. For that one job, it is a genuine free alternative. The honest caveat is scope. Wordtune Free is limited to 10 rewrites a day and 3 summaries a month, but the paid tiers add things CapyBro simply does not have: a summarizer for articles, URLs, PDFs and YouTube videos, inline grammar suggestions as you type, an Ask AI assistant, and a phone app. CapyBro replaces the rewrite-this-selection part of Wordtune, not the entire product. If that part is what you actually use all day, CapyBro covers it for free.
Where is Wordtune genuinely better than CapyBro?
Wordtune wins on breadth, polish, and reach. It runs on Mac, Windows, Linux and iPhone through the browser extension, web app and an iOS app, requires zero setup beyond signing in, and gives you inline grammar and tone suggestions as you write rather than only on demand. CapyBro does none of that today. Wordtune also ships features CapyBro deliberately lacks: a real summarizer for long articles, PDFs and YouTube videos, an Ask AI brainstorming assistant, the Spices co-writer, and a tuned, consistent house style that needs no API key and no model choices. If you want one account that works on every device, polished onboarding, a company behind it with a support team, and the kind of enterprise security posture Wordtune markets to businesses, Wordtune is the safer, more complete choice. CapyBro is a single developer's desktop tool, and it shows in scope.
How does the in-place rewrite actually work?
You select text in any Windows app and press Ctrl+Shift+E. CapyBro grabs the selection, sends it to your chosen AI, shows a diff preview you can edit, and pastes the result back in place. Ctrl+Shift+Q opens a prompt menu, Ctrl+Shift+Z undoes, and Pro adds Ctrl+Shift+M to switch models mid-task. The key difference from Wordtune is reach. Because CapyBro works at the OS level via a global hotkey, it operates the same way in Word, Outlook, VS Code, Telegram, Discord, a Steam chat box, or any field that accepts pasted text. Wordtune lives inside the browser and its web and iOS apps, so it shines on web pages but cannot touch most native desktop apps. CapyBro trades Wordtune's polished in-browser overlay for universal desktop coverage.
Which one is more private?
CapyBro can be fully private; Wordtune is cloud-only. In Ollama mode CapyBro runs a local model and your text never leaves your machine. There is zero telemetry, no analytics, and no account. Your API key sits in Windows Credential Manager, DPAPI-encrypted per user, and an optional experimental PII-masking pass can strip obvious personal data before any cloud call. Wordtune is a cloud service. Your text is sent to its servers for processing, it requires an account, and like most SaaS it uses product analytics. To its credit, Wordtune positions itself for business and team use with the security and compliance posture that buyers expect, which many organizations require. But if your rule is that draft text must never leave the device, CapyBro with Ollama is the only one of the two that can satisfy it. If you use CapyBro's OpenRouter mode instead, your text goes to whichever cloud model you picked, just like Wordtune.
What does $19 once get me versus a Wordtune subscription?
CapyBro Pro is a single $19 payment through Gumroad, good for 3 devices, with a 14-day money-back guarantee and no recurring charge ever. It unlocks five things: history export to CSV/JSON, settings backup and restore, the switch-model hotkey, five curated prompt packs (about 50 prompts), and usage statistics. The entire core rewrite workflow is free without Pro. Wordtune Advanced is $6.99 a month and Unlimited is $9.99 a month, dropping to roughly $4.89 and $6.99 a month if you pay annually. Over a couple of years that is well past CapyBro's one-time cost, but you are paying for hosted AI you never have to configure, plus the summarizer, mobile app, Ask AI, and inline suggestions. With CapyBro you also pay for AI usage separately, either pennies of OpenRouter credit or nothing at all in local Ollama mode. So CapyBro is cheaper over time only if you already have, or want, your own AI key.
Can I choose which AI model rewrites my text?
With CapyBro, yes, and that is a real differentiator. A single checkbox switches between OpenRouter (cloud access to GPT-4o, Claude, Gemini, DeepSeek, Llama and dozens more, pay-as-you-go on your own key) and Ollama (any model you have pulled locally). Pro lets you bind a specific model to a specific prompt and hot-swap models with a hotkey. Wordtune uses its own in-house models and does not expose a model picker. That is a feature, not a bug, for most people: you get one consistent, well-tuned writing style with no decisions to make. CapyBro hands you the controls, which is great if you want the newest frontier model or a private local one, and unnecessary friction if you just want good output without thinking about it.
What's the catch with CapyBro? The honest limitations
Three things, stated plainly. First, CapyBro is Windows 10/11 x64 only today. A macOS port via Avalonia is on the roadmap, roughly two months of work, with Linux later, but right now there is nothing for Mac, Linux, or phones. If you are not on Windows, Wordtune wins by default thanks to its browser extension, web app and iOS app. Second, the direct .exe from GitHub is currently unsigned, so Windows SmartScreen shows an 'Unknown publisher' warning; you click More info, then Run anyway. The Microsoft Store build is signed and has no such prompt, so install from the Store or winget if that bothers you. Third, CapyBro has no live grammar checking, no summarizer, no Ask AI brainstorming, no plagiarism checker, and no voice or image input. It does one thing, rewriting selected text on demand, and leaves the rest to other tools.
How do I switch from Wordtune to CapyBro, or run both?
Many people will run both, and that is fine. Install CapyBro from the Microsoft Store (or winget install RomanTykhonenko.CapyBro) or grab the ~48 MB installer from GitHub Releases; it is a per-user install with no admin rights. On first launch a wizard helps you set the OpenRouter key or point at a local Ollama model, then you are rewriting with Ctrl+Shift+E in seconds. If you want to drop Wordtune entirely, the questions to ask are: do I use its summarizer, Ask AI, or iOS app? If yes, keep Wordtune for those. Do I mostly rewrite and fix selected text on a Windows PC? Then CapyBro covers that for a one-time $19, works in every desktop app, and can run offline. A common setup is CapyBro for everyday in-place rewriting across desktop apps, and Wordtune Free or a short subscription when you need summaries or to work from your phone.
Who should pick which
CapyBro vs Wordtune FAQ
Is CapyBro really free, or is that a trial?
It is genuinely free, not a trial. The core rewrite, fix, paraphrase, and translate workflow is MIT-licensed open source with no time limit and no daily cap. The optional Pro upgrade is a one-time $19 for five extra conveniences, but you never need it to use the main tool.
Does CapyBro work on Mac or my phone like Wordtune?
Not today. CapyBro is Windows 10/11 x64 only. A macOS version is on the roadmap (built with Avalonia, roughly two months of work) and Linux may follow, but there is no Mac, Linux, or mobile build right now. Wordtune covers the browser on any OS plus an iOS app, so it is the better cross-device choice.
Can CapyBro summarize articles or check grammar live like Wordtune?
No. CapyBro rewrites selected text on demand; it has no summarizer, no live grammar checking as you type, no Ask AI assistant, and no plagiarism checker. Wordtune does those things. If those features matter to you, Wordtune is the more complete tool, or you can run both.
Do I pay for AI usage on top of CapyBro?
It depends on the backend. In OpenRouter mode you use your own API key and pay the model provider directly, usually pennies per session. In Ollama mode the model runs locally and AI usage is free. Wordtune bundles the AI cost into its subscription, so there is nothing extra to set up.
Is my text private with CapyBro?
It can be. In local Ollama mode your text never leaves your PC, there is zero telemetry, and no account is needed. In OpenRouter mode your text goes to the cloud model you chose, similar to how Wordtune sends text to its servers. An optional PII-masking pass can strip obvious personal data before cloud calls.
Why does Windows warn me when I install CapyBro?
The direct .exe from GitHub is currently unsigned, so SmartScreen shows 'Unknown publisher'; click More info, then Run anyway. To avoid the warning, install the signed Microsoft Store build or use winget install RomanTykhonenko.CapyBro, both of which are signed and update automatically.
How many devices does one CapyBro Pro license cover?
One Pro key activates on 3 devices. It is a one-time purchase through Gumroad with a 14-day money-back guarantee, and it is never a subscription, so there is no renewal.
What does Wordtune cost compared to CapyBro Pro?
Wordtune Advanced is $6.99/month and Unlimited is $9.99/month, dropping to about $4.89 and $6.99/month billed annually, on top of which the AI is included. CapyBro Pro is a single $19 payment for 3 devices with no recurring fee, but you supply your own AI key (cheap OpenRouter usage) or run a free local model.
Should I just use Wordtune instead?
If you work across Mac, Windows, and iPhone, want a summarizer, Ask AI, and inline grammar help, and prefer a hosted tool with a support team, Wordtune is the better fit. If you are on Windows, want in-place rewriting in every desktop app, value offline use or model choice, and prefer paying once, CapyBro fits better. They overlap but lead in different directions.
Try CapyBro free, decide for yourself
Install the free core, set your AI key or a local Ollama model, and rewrite a selection with Ctrl+Shift+E in any Windows app. If the one-time $19 Pro is not worth it to you, the core stays free forever, and there is a 14-day guarantee if it is. Wordtune is a strong tool too; if you need cross-platform reach, a summarizer, or Ask AI, use it without regret.
See also
CapyBro vs Grammarly
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CapyBro vs ChatGPT Desktop (Plus)
A $19 one-time tray utility that rewrites selected text in place, next to a $20-a-month chat app that does far more but lives in its own window.
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CapyBro vs Slashit App
A Windows-only open-source rewriter with a one-time price, compared honestly against Slashit's cross-platform app with a free plan and an AppSumo lifetime deal.
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CapyBro vs QuillBot
A one-time $19 Windows hotkey that rewrites text in any app, versus a polished cloud writing suite you rent monthly.
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