2.5 billion people use WhatsApp every day. Zero productivity tools. Gmail got smart replies in 2017. WhatsApp added basic single-message scheduling in February 2026, buried in the UI. Still no AI, no way to catch up on a hundred group messages, no follow-up reminders. Nobody's building for the people who just use WhatsApp to talk to friends, family, and colleagues. So I started building it.
Chrome extension showing AI suggestions, tone control, and scheduling Prototype
I kept running into the same friction. Want to schedule a birthday message for midnight? Can't. Need to catch up on a family group chat with 120 unread messages? Scroll through every single one. Want quick reply suggestions when you're juggling ten conversations? Nothing.
The gap is bigger than scheduling. There's no personal productivity layer at all. WhatsApp's own scheduling, added in early 2026, is single-message only with no recurring option. Every third-party tool in this space targets businesses running customer support through the WhatsApp Business API. Personal users got left behind. That's the gap I'm filling.
You open WhatsApp Web and the extension is already there. A small toolbar next to the compose box. Type a message and you'll see AI suggestions, a tone adjuster, and a schedule button. Behind it, everything runs locally in the browser.
A content script injects the UI via shadow DOM so it never clashes with WhatsApp's own styles. A background service worker handles scheduling through Chrome Alarms, so messages go out even if the tab isn't focused. Message access comes from the WPP library (an open-source WhatsApp Web API), not brittle DOM scraping. No server required for core features. No sign-up.
Schedule one-off or recurring messages. Enforces per-contact office hours so messages don't fire at 3am. Supports intelligent batch sending with staggered delays.
Reads the context of the chat and suggests 3 replies instantly via Claude Haiku. Learns your personal emoji habits and tone.
Draft quickly, then click to rewrite as formal, casual, or professional. Seamless context switching.
Instantly summarise 30+ unread messages. Extracts decisions, assignees, and deadlines into structured bullets.
Intercepts messages with a 5-second countdown bar. Cancel anytime before it hits WhatsApp's servers.
Flag messages to bounce back to your attention later. Set keyword alerts for terms like "urgent" or "deadline".
All data stays in local Chrome storage. No sign-ups required. Bring your own API key or use the free tier proxy.
Every WhatsApp extension I found was built for businesses. I just wanted to schedule a birthday message.
Enterprise version of the same AI-first thinking. 60k lines of Python, production infrastructure, Xero + HubSpot integration.
View case study
Multi-agent Python system with the same structured-output approach. Four agents, deterministic risk management.
View case study
Full-stack Next.js site for the family textile business. Different domain, same build-from-scratch approach.
View case study