Comparison
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.
I'm Roman, the solo developer behind CapyBro, so treat this as a comparison written by an interested party who is trying very hard to be fair. CapyBro and Slashit App overlap on one big idea: select text, hit a hotkey, let AI rewrite it in place. But they aim at different people. Slashit is a polished, well-marketed product that runs on Windows, Mac and in the browser, bundles snippets, dynamic templates and clipboard history, has a genuine free plan, and is also sold as a one-time AppSumo lifetime deal. CapyBro is a focused Windows tray utility with an MIT open-source core, two AI backends (cloud or fully local), and an optional $9 one-time Pro tier. On the single biggest factual point, Slashit wins today: it is genuinely cross-platform and CapyBro is Windows-only. Below I lay out where each tool is the better buy.
CapyBro vs Slashit App at a glance
| Feature | CapyBro | Slashit App |
|---|---|---|
| Platforms | Windows 10/11 x64 only (macOS on roadmap) | Windows, Mac, and browser |
| Core workflow | Select text anywhere, hotkey rewrites in place | Snippets, slash-command templates, AI rewrite hotkey |
| Price model | Free core forever; Pro $9 one-time | Free plan; $5/mo or $54/yr; AppSumo LTD from $39 |
| Free plan | Yes, full core workflow free forever | Yes, 200 AI credits/month, core features |
| AppSumo lifetime tiers | Not on AppSumo | $39 (1 seat) / $99 (5 seats) / $199 (50 seats) |
| AI backend | OpenRouter (cloud, BYOK) or Ollama (local) | Cloud only (ChatGPT, Gemini, Claude), no local mode |
| Offline / fully local AI | Yes, via Ollama (text never leaves PC) | No, AI runs in the cloud |
| AI usage limits | None imposed; pay your own API provider | 200-3,000 AI credits/month by tier; BYOK on paid plans / LTD Tier 2-3 |
| Account required | No account, no sign-in | Yes, account for cross-device sync |
| Telemetry / analytics | Zero telemetry, no analytics | Cloud sync; AES-256, states GDPR/CCPA compliance |
| Open source | Yes, MIT (github.com/phantasmat2018/capy-bro) | Closed source |
| Snippets / text expansion | No (unlimited AI prompts instead) | Yes, unlimited snippets and dynamic templates |
| Clipboard history | No (local history of last 50 AI runs) | Yes, built-in clipboard history |
| Team sharing | No (single-user, 1 device per key) | Yes, team sharing and multi-seat tiers |
| Refund window | 14-day money-back guarantee | 60-day refund on AppSumo; 7 days on subscriptions |
The full story
What problem does each one actually solve?
CapyBro and Slashit App both let you fix or rewrite text with a hotkey, but they solve different core problems. CapyBro is built around one job: select any text in any Windows app, press Ctrl+Shift+E, and the AI rewrites, fixes grammar, translates or paraphrases it in place. Slashit is broader: it adds reusable snippets, slash-command dynamic templates and clipboard history on top of AI rewrites. If your pain is repetitive boilerplate typing across a team, Slashit covers more ground. If your pain is specifically polishing whatever you just wrote, CapyBro does that one thing with less to configure and nothing to log into.
Is CapyBro really free, and what does the $9 unlock?
Yes, CapyBro's entire core workflow is free forever and MIT open-source. The free version gives you the global rewrite hotkey, the prompt menu, undo, unlimited user-defined prompts, diff preview with an editable result pane, local history of your last 50 runs, and both AI backends. Pro is a single $9 one-time payment (never a subscription) that adds exactly five things: history export to CSV/JSON, settings backup and restore, a switch-model hotkey, five curated prompt packs of roughly 50 prompts, and usage statistics. Three devices per key, 14-day money-back. You can use CapyBro fully and indefinitely without ever paying. For context, Slashit also has a free plan, but it caps you at 200 AI credits a month and runs only on its hosted cloud.
Where is Slashit App genuinely better than CapyBro?
Slashit beats CapyBro on cross-platform reach, breadth, and team features, and I want to be clear about that. Slashit runs on Windows, Mac and the browser today; CapyBro is Windows-only, with a macOS port still roughly two months of work away. Slashit also bundles real snippet expansion, dynamic templates with placeholders, clipboard history, and team sharing with multi-seat AppSumo tiers (up to 50 seats). CapyBro has none of those. If you work on a Mac, switch machines often, or need shared snippets across a team, Slashit is simply the better fit right now, and no amount of MIT licensing changes that.
How do the prices really compare over time?
Both can be effectively free or a one-time purchase, but the math differs. Slashit has a free plan with 200 AI credits a month; its paid plans are $5/month or $54/year for unlimited credits, and its AppSumo lifetime deal runs $39 for one seat, $99 for five seats, or $199 for fifty, with 200 to 3,000 monthly AI credits depending on tier. CapyBro is free forever for the full workflow, with an optional $9 one-time Pro tier and no seats or credits to track. The key difference is AI cost: Slashit meters AI credits unless you bring your own key (offered on its paid plans and AppSumo Tiers 2 and 3), while CapyBro never meters anything because you always bring your own OpenRouter key (pay-as-you-go) or run Ollama locally for free. Heavy users may find CapyBro cheaper to run long term; light users may be perfectly happy on Slashit's free or low-cost tiers.
How does the privacy and AI model differ?
CapyBro can run with no cloud at all, while Slashit is cloud-based by design. CapyBro has zero telemetry, no analytics and no account. Your API key lives in Windows Credential Manager, DPAPI-encrypted per user, and there is an optional experimental PII-masking step before any cloud call. Choose the Ollama backend and nothing ever leaves your PC. Slashit runs AI in its hosted cloud using ChatGPT, Gemini or Claude, states that stored snippets are encrypted with AES-256, and claims GDPR and CCPA compliance, but it does require an account and has no fully offline AI mode. Both are reasonable; they sit at different points on the trust spectrum.
Why does the AppSumo lifetime deal carry a durability risk?
A lifetime deal is only as long-lived as the company behind it, and that is the honest catch with any AppSumo purchase. If Slashit's vendor pivots, gets acquired, or shuts down, the cloud AI and cross-device sync that the product depends on can disappear, and a closed-source app leaves you no recourse. CapyBro's hedge is different: the core is MIT-licensed on GitHub, so even if I quit tomorrow, anyone can fork it, build it, and keep it running. With Ollama, it also keeps working with no servers at all. Neither model is strictly safer, but they fail in very different ways, and that is worth weighing.
How honest is CapyBro about its rough edges?
Completely, because pretending otherwise would be silly for a solo project. CapyBro is Windows-only today. The direct .exe from GitHub Releases is currently unsigned, so Windows SmartScreen shows Unknown publisher and you click More info then Run anyway. The Microsoft Store build is properly signed and has no such prompt, so install from the Store if that bothers you. CapyBro also has no snippets, no clipboard history, no team sharing, no plagiarism checker and no voice or image input. It is a focused rewriting tool, not a suite, and Slashit is the broader product.
How do I migrate or try both?
Trying both costs little, since each has a free entry point. For CapyBro, install from the Microsoft Store (winget install RomanTykhonenko.CapyBro also works), open settings, pick OpenRouter and paste an API key or pick Ollama and select a local model, then select text anywhere and press Ctrl+Shift+E. There is no account step. For Slashit, you create an account, install the desktop app or browser extension, and set up snippets and templates on its free plan. Because CapyBro keeps no telemetry and stores history locally, you can run it alongside Slashit risk-free, decide which hotkey flow you prefer, and refund within either tool's window if a paid tier is not for you.
Who should pick which
Frequently asked questions
Is CapyBro a drop-in replacement for Slashit App?
Only partly. CapyBro matches Slashit's select-and-rewrite hotkey workflow on Windows and adds a fully local AI option, but it has no snippets, dynamic templates, clipboard history or team sharing, and it is Windows-only. If you rely on those Slashit features or use a Mac or browser, CapyBro is not a full replacement.
Does Slashit App run on Mac and CapyBro does not?
Correct. Slashit App runs on Windows, Mac and the browser today. CapyBro is Windows 10/11 x64 only right now. A macOS port via Avalonia is on the roadmap, roughly two months of work, but it does not exist yet, so for Mac users Slashit is the practical choice.
What is the real long-term cost of each?
CapyBro is free forever for the full workflow, with an optional $9 one-time Pro tier and no metered AI; you pay your own OpenRouter usage or run Ollama free. Slashit has a free plan with 200 credits a month, paid plans at $5/month or $54/year, and an AppSumo lifetime deal of $39 to $199 by seat count. Heavy AI users often pay less with CapyBro's BYOK model.
Can either tool run AI fully offline?
CapyBro can, via its Ollama backend, where the text never leaves your machine. Slashit cannot; its AI runs in its hosted cloud and requires an account. If offline or air-gapped use matters, that is a decisive difference in CapyBro's favor.
Is CapyBro safe to install given the SmartScreen warning?
The direct .exe from GitHub is currently unsigned, so Windows SmartScreen shows Unknown publisher; click More info then Run anyway. The Microsoft Store build is signed and shows no warning, so install from the Store or via winget if you prefer. The source is MIT-licensed and public for anyone to inspect.
What does the AppSumo lifetime deal actually include?
Slashit's AppSumo tiers are $39 for one seat with 200 AI credits a month, $99 for five seats with 600 credits and BYOK, and $199 for fifty seats with 3,000 credits and BYOK. All include unlimited snippets and templates, clipboard history, all AI models, dual-device sync and team sharing, with a 60-day refund window.
Which is better for privacy?
It depends on your threat model. CapyBro has no account, no telemetry, stores your key DPAPI-encrypted locally, and can run fully offline via Ollama. Slashit states it encrypts data with AES-256 and claims GDPR and CCPA compliance, but it is cloud-based and requires an account. For maximum data minimization, CapyBro's local mode wins; for managed cloud convenience, Slashit is fine.
Can I use both at the same time?
Yes. CapyBro keeps no telemetry and stores history locally, so it sits quietly in your tray and will not conflict with Slashit's snippet and clipboard features. Many people could reasonably run Slashit for snippets and templates while using CapyBro for offline or BYOK rewrites, then keep whichever hotkey flow they prefer.
Try the Windows-only, open-source side for free
If you are on Windows and want a private, open-source rewriter with no account, no telemetry and an optional one-time $9 Pro tier, CapyBro is free to try in two minutes. If you need Mac, browser or team snippets, Slashit App is the honest pick, and I would rather you choose the right tool than the wrong one.
See also
CapyBro vs Grammarly
A solo developer's honest take: I used Grammarly Pro for years, then built a one-time, hotkey-driven alternative for the parts I actually used.
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CapyBro vs ChatGPT Desktop (Plus)
A $9 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 Wordtune
A $9 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.
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CapyBro vs QuillBot
A one-time $9 Windows hotkey that rewrites text in any app, versus a polished cloud writing suite you rent monthly.
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