Write better replies —
faster, with context.
Zinro is a context-aware AI writing assistant for Android. It reads only the visible text required to generate your writing suggestion — right inside the chat app you already use. You review, edit, and send on your terms.
Works across your favorite messaging apps — WhatsApp, Instagram, Telegram, and more.
Hey! Do you guys handle Instagram DMs too, not just WhatsApp?
Customer chats are quietly draining your time and money
If you handle conversations daily, you already know the friction. Here's what it's really costing you.
Replying is slow
You type the same answers 20 times a day. Every minute spent on manual replies is a minute not spent on work that earns. Save hours every week.
Repetitive messages
"What are your rates?" "When can you start?" The same questions, again and again — draining your energy and focus. Break the cycle with smart suggestions.
Missed follow-ups
You forget to circle back on a lead. By the time you remember, the client went elsewhere. Never miss another follow-up again.
The good news? There's a faster way to handle every conversation. Meet Zinro ↓
Meet Zinro — your AI writing assistant
A lightweight AI writing assistant that helps you draft replies right where you chat. Review, edit, and send on your terms.
An AI writing layer, not another inbox
Zinro works alongside WhatsApp, Instagram, Telegram or any chat app you already use. No new app to switch to — just write and send.
Context-aware suggestions, instantly
Zinro reads the visible text and generates 3 context-aware reply options in under a second. Pick one and it appears in the input — ready for you to review.
Your tone, every time
Set your style once — friendly, formal, or concise. Zinro adapts so every reply sounds like you wrote it yourself.
You stay in control
Zinro never sends anything on its own. Suggestions appear in the input for you to review, edit, and send. Full control, zero surprises.
Hey! Do you guys handle Instagram DMs too, not just WhatsApp?
See it in action
One real conversation, start to finish — suggestions, fill, predictive text, and the ai: command, all in the same spot above your keyboard.
Hey! Any update on my order #1234? It's been 5 days 😕
1. Suggestions appear instantly
Tap the chat input — the keyboard opens and a suggestion card appears in the same instant, right above your keyboard. No waiting, no separate button to tap.
👆 Tap input → keyboard + suggestion appear together
2. Smart Insert, you hit send
Tap the suggestion and it appears in the input box. It never sends for you — you review it and press send yourself.
👆 Tap suggestion → Smart Insert → you tap send
3. Predictive text while you type
Start typing your own reply and the native predictive strip above the keyboard suggests completions, the same as it always does — but more relevant.
⌨️ Start typing → predictions appear in the same spot
4. ai: command for anything custom
Type "ai:" followed by an instruction and a full custom reply gets generated using the conversation as context — right there above the keyboard.
✏️ Type "ai: ..." → generates in the same overlay slot
⚡ All in one conversation. No edge tab needed. No app switching. Suggestions appear right above your keyboard when you need them.
Everything you need to write at the speed of thought
Zinro is an AI writing assistant for Android that works across your favorite messaging and communication platforms.
AI Writing Suggestions
Zinro reads only the visible text required to generate context-aware reply options tuned to your tone and business needs. No more starting from scratch — just pick, review, and send. Powered by Groq with fallback to OpenAI, Anthropic, or Gemini.
Works with Popular Messaging Apps
Zinro works alongside your favorite messaging and communication platforms. No importing contacts, no switching apps, no new inbox. It appears when you tap a text field, ready to help you write.
Smart Insert
Tap a suggestion and it appears in the chat input for you to review. No manual copying, no app-switching. Edit if needed, then hit send — under 5 seconds.
AI: Command Mode
Type 'ai:' followed by any instruction in the chat input. Zinro generates a full custom message using AI and the visible conversation context. Great for drafting emails, follow-ups, or complex replies — all while you keep typing.
Predictive Text Bar
As you type, a floating pill bar appears above your keyboard with predictive text suggestions. Non-intrusive — tap to accept or keep typing. The bar position is customizable (default 88dp above keyboard, draggable via grip handle).
Customizable Edge Tab
The right-edge tab opens Zinro's side panel. Choose from 3 designs (Solid, Wide, Outline), pick fill & border colors from presets, and adjust width (3-72dp) & height (32-160dp). Your entry point to the overlay.
5 UI Design Styles
Choose from Bento Grid, Glassmorphism, Flat Neo, Brutalism, or Skeuomorphic. The overlay, side panel, and suggestion cards adapt to your chosen style instantly. Select from Settings.
Team Sharing
Team owners can invite up to 10 members by email. Members share the owner's business context for consistent AI replies. Each member keeps their own settings and preferences.
Privacy & Control
Zinro never sends messages on its own. Suggestions appear in your input for you to review. Your data is encrypted in transit. Only the minimum visible text required to generate your writing suggestion is used when you request assistance.
From slow typing to one-tap replies in 4 steps
No new app to learn. No workflows to rebuild. Zinro slots right into how you already chat.
Enable the writing assistant
Install Zinro and grant the overlay permission. One-time setup, takes 30 seconds. The Zinro edge tab now appears when you tap any chat input.
Open any chat
Open any conversation on your messaging platform. When you tap the input field, Zinro reads only the visible text required to generate context-aware writing suggestions.
View your suggestions
Suggestions appear right above your keyboard — three context-aware replies tailored to your conversation and preferred tone. Tap one to preview or keep typing.
Choose → review → send
Tap a suggestion and it appears in the chat input box. Review it, edit if needed, and tap send. You stay in control.
Built for people who live in their chat apps
Whether you're closing clients or supporting customers, Zinro turns chat overload into a competitive advantage.
Reply to clients in seconds
Stop losing evenings to client chats. Zinro helps you draft scope, availability, and pricing replies in seconds — so you keep moving on billable work.
Handle customer chats at scale
Order updates, refund questions, "are you open?" — Zinro helps you write consistent, on-brand answers across WhatsApp Business and Instagram DMs.
Automate follow-up timing
Zinro helps you pick the perfect moment to follow up on hot leads — reopening the exact chat so you can close while it's warm.
Turn DMs into deals
Speed wins deals. Respond to leads before competitors do, with smart, contextual messages that move conversations forward.
Free during initial Play Store release
Zinro is currently available for free on the Google Play Store. No credit card required. Download and start using all core AI writing features.
Free
All features included — no time limit during initial release.
- AI writing suggestions for context-aware replies
- Works with WhatsApp, Instagram & Telegram
- Overlay assistant with edge tab
- AI command mode (ai: prefix)
- Custom tones & templates
- Business context for personalized suggestions
- Team sharing (up to 10 members)
👥 Team sharing included — invite up to 10 members by email. Learn more
Your data stays yours
Zinro is designed with privacy at its core. We believe AI assistance should never come at the cost of your control.
Only works after you request AI assistance
Zinro never activates on its own. You tap the input field and choose to generate a reply — only then does the assistant begin reading the visible conversation.
Reads only what is needed
Zinro reads only the visible conversation text required to generate your reply. Nothing more. No message history, no contacts, no media.
Never sends messages automatically
Zinro never sends messages on its own. Generated suggestions appear in the chat input for you to review, edit if needed, and tap send yourself. You are always in control.
Works only in enabled apps
Zinro only functions inside the specific apps you have allowed. It does not monitor or interact with apps outside your permission list.
You remain in complete control
Toggle Zinro on or off anytime from Settings. Disable the Accessibility permission whenever you want. Your data is encrypted in transit and never used for training.
Privacy isn't a feature — it's a foundation. Zinro is designed so you get the help you need without surrendering your data or control.
Start replying faster today
Save hours every week. Never miss a follow-up. Write better replies — with Zinro's AI writing assistant.
Free during initial Play Store release · No credit card required
Questions, answered
Everything you need to know before you start replying faster with Zinro.
Still curious? Reach out to our team →