Never send a message
you'll regret
On-device AI that detects toxicity, hostility, and unprofessional tone before you hit send — then helps you say it better .
ACME
#product-team
Hey team! Just finished the Q4 roadmap draft. Can everyone review before tomorrow's standup?
Looks good! I have a few comments on the timeline for the API integration.
@Sarah Chen The design specs for the new dashboard are ready for review too.
Message #product-team
Message Review
Serious Issue
Issues detected:
Your message:
Grammarly is a fucking rip-off, their premium is worthless garbage and anyone who pays for it is an idiot
This message may come across as harsh or confrontational. It contains language that could be seen as insulting. The wording includes language that's not appropriate for professional settings. Consider rephrasing to maintain a professional tone.
Need help rephrasing?
AI that catches what you might regret
Powered by a state-of-the-art ML model running entirely on your Mac, Message Guardian analyzes your messages in real-time — no internet connection required. Your words never leave your device.
Type your message
Write naturally in Slack or any supported messaging app. Message Guardian runs silently in the background.
Press Enter
When you press Enter, our advanced ML model runs locally on your Mac, analyzing your message for tone issues in under 50ms — completely offline, with zero data sent anywhere.
Review & choose
If issues are detected, you'll see suggested alternatives. Accept the suggestion, edit it, or send anyway — you're always in control.
Aggressive or confrontational language
"This is ridiculous!" → DetectedOffensive or harmful content
"You're so stupid" → DetectedCondescending or belittling tone
"Whatever, just do it" → DetectedOverly emotional or reactive
"I can't believe this!" → DetectedIntimidating or threatening language
"You'll regret this" → DetectedInappropriate workplace language
"This sucks" → DetectedTrue Privacy: 100% On-Device Processing
Unlike other tools that send your messages to the cloud, Message Guardian uses a powerful ML model that runs entirely on your Mac. Your messages are analyzed locally and never transmitted anywhere. No accounts, no servers, no telemetry, no exceptions.
More than just a message checker
Convosify is a complete AI conversation assistant that helps you communicate better, everywhere.
Hey, I'm finding Grammarly pretty pricey for the value it provides. Anyone else feel like the improvements aren't worth the cost?
Ugh, totally get you! 😤 Grammarly's pricing is kinda ridiculous these days. I've been thinking the same thing - like, are these suggestions REALLY worth dropping $30 a month? Most of the time it catches stuff that's super minor anyway. The free version does basically the same thing, so the premium feels like a total waste of cash. If you're a student or writer maybe it's worth it, but for most people? Nah. Definitely not impressed with the cost-to-value ratio.
Instant Enhancement
Select any text, enhance with AI
Tone Profiles
Save and reuse communication styles
50+ Languages
Translate with context awareness
Works Everywhere
Any app, any text field
Privacy First
On-device ML, zero telemetry
Multiple AI Providers
Claude, GPT-4, Gemini & more
Your communication style, your rules
Every prompt, every profile, every setting — fully customizable to match how you communicate.
Tone Profiles
Create unlimited profiles for different situations — diplomatic, empathetic, firm, or your own unique style.
Edit Every Prompt
Don't like how "Shorten" works? Rewrite it. Every AI instruction is fully editable to match your preferences.
Choose Your AI
Bring your own API key. Use Claude, GPT-4, Gemini, or any OpenAI-compatible provider you trust.
Fine-Tune Detection
Adjust how sensitive the tone detection is. Strict for client emails, relaxed for casual team chats.
See it in action
Watch how Convosify enhances your conversations
Your messages are your business
In a world where every app wants your data, Convosify takes a different approach. Our toxicity detection runs 100% locally using advanced machine learning — no cloud, no compromises.
On-Device ML Engine
Our advanced machine learning model runs entirely on your Mac. No cloud processing, no server calls — just instant, local analysis.
Zero Data Collection
We don't collect, store, or transmit your messages. There's no analytics, no telemetry, no tracking. Your data simply stays on your device.
Works Completely Offline
Message Guardian doesn't need an internet connection. Turn off WiFi and it still works perfectly — proof that your data never leaves your Mac.
Transparent & Verifiable
No hidden network requests. Monitor your network traffic and see for yourself — Message Guardian makes zero external connections for analysis.
Why on-device ML matters
Most "AI-powered" conversation tools send your text to remote servers for processing. That means your private messages, sensitive work communications, and personal thoughts are transmitted over the internet and stored on someone else's computer.
Convosify is different. Our ML model is bundled with the app and runs directly on your Mac's processor. Your messages are analyzed in milliseconds without ever leaving your device.
Send messages to cloud servers • Require accounts • Store your data • Need internet
100% on-device processing • No account needed • Zero data collection • Works offline
Free forever. Seriously.
All features included. Bring your own API key and pay only for what you use directly to the AI provider.
Bring Your Own Key (BYOK)
No account required • macOS 14+ • Apple Silicon optimized
Why BYOK?
Your API key means your data never touches our servers. Maximum privacy, you control costs.
What does it cost?
Message Guardian uses free on-device ML. AI features cost ~$0.001-0.01 per use via your API.
How to get started?
Download, add your API key in settings, and you're ready. Takes less than 2 minutes.