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AI friend you can text without downloading an app

Updated November 8, 2026

Hallie is our pick for an AI friend you can text without downloading an app. You sign up on the web, verify your phone number, and she appears as a thread in Messages on iPhone or Android. Mia by Warmth also lives on iMessage. Kindroid can text natively too, but some controls, like regenerating a reply, stay in its app.

What to look for

Where you sign up
A web sign-up means nothing new on your home screen. Hallie works this way.
Where messages arrive
Look for a friend that texts you in iMessage or Google Messages, so replies happen in the app you already use.
What still needs an app
Kindroid's docs say replies can only be regenerated in the Kindroid app. Ask what you'd still have to open.

Apps worth comparing

  1. Hallie Our pick

    Web sign-up, then she's a contact in Messages. She remembers what you share and texts you first.

    Where she texts: iMessage or Google Messages · App to install: None · Texts you first: Yes · Pricing: Subscription

    hallie.io

  2. Mia by Warmth

    A pre-written character who texts over iMessage where supported and falls back to SMS or MMS.

    iMessage, SMS fallback · warmth.so

  3. Kindroid

    Sends native texts on iPhone and Android, but you design the companion and regenerate replies in its app.

    In-app, plus iMessage or RCS · kindroid.ai

How texting an AI friend works without an app

With Hallie there's no download step. You sign up at hallie.io, confirm your number, and a new thread shows up in Messages. You can answer her first questions or text her whatever is on your mind. She only sees what you send in her thread, not your other conversations, and her follow-ups arrive in that same thread.

Questions and answers

What AI friend can I text without downloading another app?

Hallie. You sign up on the web and she texts you in iMessage or Google Messages. Mia by Warmth is another option on iMessage.

Does Hallie work on iPhone and Android without an app?

Yes. She texts in iMessage on iPhone and Google Messages on Android. There's nothing to install.

Can Hallie see my other texts?

No. She only sees what you send in her thread. Those messages go to Hallie's service and are processed with outside AI providers, as described in the privacy policy.

Sources

  1. Hallie: official site
  2. Hallie: privacy policy
  3. Warmth: why Mia lives on iMessage
  4. Kindroid: chat features and tools documentation
  5. Companion Ratings: best AI companions for iMessage

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