Your AI assistant, with its own US phone number.

Select a number in any US area code. Your Redtie assistant will answer the call in a male or female voice of your choice. The assistant will screen out spam, take messages, book appointments in your calendar and send you the call summary by text or email.

You can take over the call any time, or follow its real-time transcription live, in the Redtie app on your computer or phone.

See how it works

Who it’s for

Built for independents and small businesses.

For work calls you can’t afford to miss.

Deaf or hard of hearing? →

How it works

Answered, written down, sent to you.

  1. Get a US number in the area code of your choice.

    Receive calls from anywhere and make calls to US numbers, on Mac, Windows, Android or any browser. iPhone and iPad are in App Store review.

  2. Choose your AI assistant.

    Select a male or female voice, and configure how you want the assistant to answer your calls.

  3. Your AI assistant will handle the call.

    The assistant will ask who’s calling and what they need, screen out spam, take the message and read the callback number back to make sure it’s right. When a caller wants an appointment, the assistant will add the request to your connected calendar as a tentative event for you to confirm. You can take over any time during the call.

  4. Call report and summary.

    As soon as the call ends, the assistant will send you the summary by text or email, with a link to the full transcript.

Hear it for yourself

Call the AI assistant now.

Our own line is answered by the same AI assistant you get. Call it, ask a question, leave a message, and hear how it sounds to your callers.

Try it — call (408) 583-6325
✦ AI assistant · answered while you were busy
CallerHi — I'm calling about the quote from last week.
RedtieOf course. Can I take your name and the best number to reach you?
CallerMarcus Oyelaran, 415 555 0188.
RedtieThat's 415 555 0188 — did I get that right?
Summary
Marcus Oyelaran following up on last week's quote. Callback 415 555 0188. Wants a revised figure before Friday.
Works with what you use

Works with your calendar and contacts.

Outlook and Microsoft 365 calendars

When a caller wants to book, the AI assistant adds the request to your Microsoft Outlook and Microsoft 365 calendar as a tentative event. You keep it or decline it.

Apple Calendar, in one tap

Using Apple Calendar? The call summary has an “Add to calendar” button. One tap and the appointment is in.

Your contacts

Contacts come from Microsoft 365 and your phone’s address book. When someone in them calls, the AI assistant greets them by name.

What’s included

A whole phone line, not an add-on.

Take the call over

Watch the conversation as it happens. If it’s worth your time, take the call over from the assistant. The caller carries on.

Transcripts and recordings

The full conversation in writing, searchable afterwards, so “what was that address?” has an answer.

Known callers by name

When the number matches one of your contacts, the AI assistant greets them by name.

Up to five lines, one account

A line for your own work, one for your rental, one for the shop. Each has its own number and settings, at $25 a line.

Summaries by text and email

Who called, what they wanted and the callback number, by email or by text (opt-in).

Every device, in sync

Mac, Windows, Android and the browser, live today. iPhone and iPad are in App Store review.

Live captions

A phone call happens once. Read it as it’s said.

Live captions

When you take the call, both sides are captioned.

Both sides of every call appear as text, labelled by speaker. Read the address, the time and the name instead of asking twice. Redtie was designed first for people who are deaf or hard of hearing, and the captions help anyone who can’t afford to lose what was said.

Redtie for people who are deaf or hard of hearing.

On a call · 02:14 Captions on
Dana Whitfield · mobile
Live captions
Dana: Pickup is 1420 Montgomery, apartment 6B.
You: 1420 Montgomery, 6B — and what time?
Dana: Quarter past four, Thursday.
1 2 3 · 4 5 6 · 7 8 9
⌨
✦
Transcript saved to this call
Searchable afterwards
Get the app

Get Redtie Phone

Mac, Windows, Android and your browser — all live today, all in sync. iPhone and iPad are in review. One account, up to five lines, every device.

Simple pricing. One line, one price.

Try it free for 7 days. Keep it for $25 a month per line.

$25 / month per line
  • 7-day free trial — card required, cancel anytime before it ends
  • A real US phone number on every line
  • AI assistant included — answers, screens spam, takes the message, hands the call to you
  • Live captions on every call, in and out, with no per-minute charge
  • Summaries, transcripts and recordings, contacts sync, and calendar for appointment requests
  • Mac, Windows, Android and the web, all in sync
  • Add lines anytime — $25 each, up to five on one account
  • Fair use on assistant minutes — normal use is covered. Very heavy AI-assistant use is the one thing that may need a custom plan. See fair-use terms.
7-day free trial

Questions, answered.

What is Redtie Phone?

A real US phone number with an AI assistant built in. The assistant answers your calls, screens out spam, takes the message and sends you the summary. You can take the call over from the assistant any time. When you pick up yourself, live captions show both sides of the call. It runs on Mac, Windows, Android and the web.

Do I get a phone number?

Yes. Every line comes with its own US phone number in the area code you choose. You can also forward your existing number to it.

Can I make calls from my Redtie number?

Yes. You can call any US number from your Redtie number, on Mac, Windows, Android or the web, and by default the person you call sees your Redtie number. The assistant only answers incoming calls.

Who is Redtie for?

Anyone who can’t afford to miss a work call: gig workers, consultants, moonlighters and landlords, and small and medium businesses. Live captions also make it a good fit for people who are deaf or hard of hearing.

How does the AI assistant work?

The AI assistant answers in a male or female voice, whichever you choose. The assistant asks who’s calling and what they need, screens out spam, and takes a message with a callback number it reads back to check. You choose when the assistant answers: always, or only when you don’t pick up. You can watch the conversation live and take the call over.

What do I get after a call?

A summary by email, by text, or both (texts are opt-in), with a link to the full transcript. If the caller asked for an appointment, it goes on your Outlook calendar as a tentative event, so you decide whether to keep it.

Which platforms does it run on?

Mac, Windows, Android and any browser — all available today and kept in sync. iPhone and iPad are in App Store review.

Can I have more than one number?

Yes — up to five lines on a single account, each with its own number and settings, all answered in the same app. A business line and a personal line, or a line per venture. Each line is $25/month.

How much does it cost?

$25/month per line, with a 7-day free trial. Add more lines anytime at $25 each, up to five on one account. Cancel anytime.

Does it replace my mobile phone?

No. Redtie is a second line that works alongside your mobile.

Can I call internationally or 911?

Your Redtie number can receive calls from anywhere in the world. Outgoing calls are to US numbers only. Redtie may not support 911 or other emergency calls — keep another phone for emergencies.

Stop losing calls to voicemail.

A real US number you can give out today. Calls in and out, an assistant for the ones you miss, and a written record of all of them.

7-day free trial · $25/month per line · cancel anytime

Not ready to start a trial?

Tell us what’s hard about calls for you today. We read every one, and we’ll only reply — no list, no drip, no newsletter.