An AI assistant you can text: how Tend works over iMessage and SMS

An AI assistant you can text is one that lives in the Messages app you already open fifty times a day, not in another app you have to remember. You sign in with your phone number and it texts you hello. From then on every job is a message: "reply to Dana about the invoice", "find me a flight to Austin on the 3rd", "remind me to buy cumin when I'm near an Indian grocer". The reply comes back in the same thread.

This guide explains how that works in Tend, step by step. It covers how the conversation starts, what a normal day of texts looks like, and how reminders find you on your phone. It also covers what the agent will and will not do without your yes, and when the web workspace matters.

It describes Tend's current app as of October 15, 2026. Where other products are mentioned, the claim is limited to what their own public pages say and is marked as such.

Key takeaways

• The door is your phone number. You sign in with it, a link is texted to you, and the first message you get is Tend saying hello. There is no app to install for the conversation itself.
• iMessage and SMS both work. iMessage on iPhone, SMS on anything else, the same agent behind both.
• Reminders come to the thread. A wake-up Tend set for itself, a watch on a price or a reply, or a place you asked to be reminded near, all end as a text to you.
• Nothing is sent, posted, booked or changed without your yes. Drafts come to you first; the last tap is yours.
• The web workspace is for the rest: connecting accounts, reading the Brain that holds what Tend knows about you, and seeing the pages it makes.
• Photos and files can be texted in. A receipt, a resume, a screenshot of a form: send it and ask.

How it starts

You go to Tend's sign-in page and enter your phone number. Tend texts you a link that signs you in, and asks a few questions about who you are and what you want help with. Then it lets you in.

The first thing you receive is a short hello from Tend: your name, that it is your own AI assistant, that you only have to ask, and that it needs a minute to get set up. Behind that text it reads what you told it and sets up the wake-ups and watches that your answers call for. Then it comes back with one more message: it is ready. If one of the jobs you named needs an account connected, that message carries a link to connect that one account. No list of features, no plan, no questions.

From there you text it the way you would text a person.

A day of texts

Tend's landing page lists what it does by tab. Here is what those look like as messages, using the lines the site itself uses:

• Email. "It writes the reply in your voice", "it forwards, archives", "it watches for the reply". You text "what did Dana say about the invoice?" and get the thread's answer, then "reply that Thursday works" and get the draft to approve.
• Calendar and meetings. "Your brief or deck is ready before the meeting." Text "what's my afternoon?" or "brief me on the 3pm" and the brief arrives in the thread.
• Shopping. "It finds the best price, with the rating, stock and delivery date", "it tells you if it's really a deal", and "say which one and it goes in your own cart, signed in as you". The paying is left to you.
• Travel. "Flights and hotels with live prices", "it tracks your flight", "it books your table", and for the rest "it hands you the link with everything filled in".
• Personal life. "It learns you", "it reminds you", "it tells you if it'll rain", "it finds the gift, the dinner and what's on tonight".
• Forms and returns. "It fills in forms", "it signs in as you", "it attaches", "and it never types a card". For a return, "it finds the order", "writes the case", "files the return" and "follows the case".
• Work. Invoices made and sent from QuickBooks, deals moved in HubSpot, posts written from your website, leads found and put on one sheet, the phone call made for you. Each of those is its own guide; the small business use case lists them.

The point of the list is not the breadth. It is that every one of those is the same action for you: a text.

Reminders that find you

Three kinds of reminder reach your phone, all as texts in the same thread.

Wake-ups. When something you asked for has a time on it, Tend schedules a wake-up for itself with an instruction of what to check before it speaks. At that time it checks, and texts you only if there is something to say.

Watches. "It watches for the message you're waiting on", "it watches the price", "it tells you when there's news". A watch runs until the thing happens or you tell it to stop, and the result is a text.

Places. Tell Tend what you need to buy and it asks one question first: order it online, or find it in person? If in person, it finds the stores near you that carry it and sets a watch on your location. When you come within about 500 metres of one, your phone gets the store's name, rating and hours. This one needs the Tend app on your phone for the location; the reminder still arrives as a message.

You can read how the places reminder works in the personal AI use case.

One errand, start to finish

An example of the flow, written the way the site's own demo threads run. Nothing in it is a record of a real user.

1. You text: "I need a yoga mat."
2. Tend asks one thing: order it online, or find a store near you?
3. You say online. Tend searches the big retailers and the brand stores together and sends one page: the options side by side, each with its picture, price, rating and delivery date, and a line on whether the price is really a deal.
4. You reply "the second one". Tend puts it in your own cart, signed in as you, and sends the link.
5. You pay. That tap is yours.

Had you said "near me", step 3 would have been different: Tend finds the shops around you that carry mats and sets a watch on your location. The next time you pass one, your phone gets its name, rating and hours.

Six messages, no app opened except the one you were already in.

What it will not do without you

Tend's rule, repeated on every tab of its site: "Nothing goes out until you say yes." That covers emails, posts, invoices, campaigns, bookings, purchases and anything that changes an account.

In practice that means a draft arrives first and you reply yes, or change it. For shopping, the cart is filled and the paying is yours. For travel, the room or table is checked and the booking is placed on your word. For a form, the fields are filled and the submit is yours when a card is involved.

This is the trade-off against a fully automatic assistant: one more reply from you, in exchange for nothing carrying your name that you have not seen.

Photos and files

"Text it a photo or a file." A photo of a receipt can become an expense. A resume as a PDF becomes the basis of a job search. A screenshot of a form becomes the fields Tend fills. A document someone sent you can be summarised or answered.

Files that Tend makes for you, a deck, a PDF, a plan, a sheet of leads, arrive as a link to a page you can open and share. When the plan changes, the same link shows the new one.

When the web workspace matters

The conversation does not need the website. Three things do:

1. Connecting accounts. Gmail, your calendar, QuickBooks, HubSpot, Klaviyo, Shopify and the rest are connected through a link Tend texts you, which opens in the workspace.
2. The Brain. What Tend has learned about you, the people in your life, your projects and preferences, is visible there and can be corrected. Why that matters has the detail.
3. Pages. Decks, sheets, plans and the places map open in the browser or the app.

Everything else stays in Messages.

Who else works by text

Tend is not the only assistant with this door, and the comparison articles on this blog cover the ones we have checked. Instinct AI describes a text-and-call approach. Alma's home page is titled "Alma, the AI assistant for moms", and its App Store listing gives texting as the main way in. Its site did not state more when checked on October 15, 2026, so this article makes no further claim about it. Meta's Muse offers WhatsApp alongside its own apps.

What differs between them is less the door than what is behind it: which accounts the agent can work in, whether its memory is visible to you, and whether it acts before you say yes. Those three are the questions to ask of any assistant you can text.

Frequently asked questions

Do I need to install an app to text Tend?

No. Sign in with your phone number and the conversation happens in Messages. The Tend app adds the places map and location reminders.

Does it work on Android?

Yes, over SMS. iPhone users get iMessage. The agent is the same behind both.

Can Tend send something on its own?

It can text you on its own: a wake-up, a watch, a place reminder. It does not send, post, book or buy on your behalf until you say yes.

What happens if I text it a photo?

It reads the photo and does what you ask with it: an expense, a form, a question about what is in it.

Where does Tend keep what it knows about me?

In the Brain, visible in the web workspace. You can read it and correct it.

Sources and related reading

• What Tend does.
• Why memory matters in a personal AI assistant.
• Tend vs. Instinct AI.
• Tend vs. Muse AI.
• Alma's home page, checked October 15, 2026.

Sign in with your number and send the first text. If anything here is out of date, contact Tend and it will be corrected.