Tether AI
Your executive assistant — always on.
Calendar, follow-ups, and the things that slip. Capture anything by voice or text.
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Calendar control
Manage Google Calendar by text or voice. Create, move, and protect your time.
Quick capture
Voice memo, photo, or text. I'll turn it into reminders, notes, or calendar events.
Morning briefings
Your day, summarized. Schedule, news, weather, what's due.
Reminders & follow-ups
Nothing falls through the cracks. Track commitments and deadlines.
Persistent memory
Remembers your preferences, projects, and context across conversations.
Always on
Available 24/7 by text. Voice, photo, and any language.
How it works
You: “Lunch with Mike Friday at 1pm”
Tether: Added to your calendar. Heads up — last time you met was 3 weeks ago.
You: “Remind me to follow up with Sarah Thursday”
Tether: Done. I'll text you Thursday morning. Saved Sarah to your people.
You: “(voice memo from car) Just got off a call with Acme — they want a proposal by next Friday.”
Tether: Got it. Saved the note, added a reminder for Wed to draft it, and a deadline for next Friday.
You: “What do I know about my 3pm with Ana?”
Tether: Ana from Beacon Health, last met Apr 12 about Q2 hiring. Open follow-up: send Q1 metrics.
Like Sunsama meets a chief of staff. By text. No app required.
Made for
Founders
Too many meetings, too little prep
Executives
Can't afford to drop a ball
Sales leaders
Endless follow-ups to track
Consultants
Juggling clients and deadlines
A day with Tether
Morning brief lands. 4 meetings today, top news, weather, what's due.
Heads up — your 10am with Sarah is in 15 min. Last met about Q2 hiring. Open follow-up: send Q1 metrics.
(you, voice memo) “Just promised the Acme team a proposal by Friday.” → Saved + reminder added.
(you) “Move my 4pm to tomorrow same time.” → Done.
End-of-day check-in. 3 tasks left, 2 follow-ups outstanding. Want to push them to tomorrow?
FAQ
What is Tether AI?
An AI executive assistant for busy professionals, accessible by text. It manages your calendar, briefs you before meetings, tracks follow-ups, captures notes from voice memos, and runs morning briefings on autopilot — no app required.
Who is it for?
Founders, executives, sales leaders, consultants — anyone managing 4+ meetings/day, multiple stakeholders, and dropped balls. If you'd hire an EA if affordable, Tether handles ~80% of what they do.
How is it different from ChatGPT?
ChatGPT is a general-purpose chatbot. Tether is a focused executive assistant — it manages your day proactively (briefings, follow-ups), keeps persistent memory of your preferences and people, and lives in your text app. It doesn't write essays or code; it handles admin.
How is it different from Lindy or Martin?
Same category — AI executive assistants. Tether's wedge is simplicity: no app, no workflow builder, no daily dashboard ritual. Text it like a person, it handles the work. Built on Telegram and SMS for executives who want zero setup friction.
Does it work with Google Calendar?
Yes — read, create, edit, delete events. Find free time, block focus time, get briefed on meetings with context from past notes and attendee history.
Does it write code or essays?
No. Tether stays narrow on EA work so it does that job exceptionally. For coding, use Claude Code or ChatGPT. For writing, use Claude or ChatGPT.