Hark and Kiwi are both free, both keep a memory of you, and both use the web to get things done: booking, ordering, filling in forms. The difference is where they live. Hark is an app you open. Kiwi is a contact in your messages that texts you first.
At a glance
| Kiwi | Hark | |
|---|---|---|
| Where you use it | Messages on iPhone, WhatsApp on any phone | Its own app on iOS, Android, Mac and the web |
| How it reaches you | Texts you when something needs you | Suggests actions in the app; sends timely information |
| Does the job | Yes, on any app or website, on your yes | Yes, through its own cloud computer |
| Your data trains AI | No | No |
| Price | Free to use | Free; $20 or $100 a month for more use |
Sources: Hark's homepage, pricing page, help page and privacy policy (updated 5 November 2026), all checked on 8 November 2026. Kiwi's privacy policy.
No app to open
Hark asks you to open Hark: its suggestions and its chat are in its app. Kiwi lives in the thread you already check all day. It reads your calendar and email and texts you once, at the right time, when a reply is owed, a meeting is coming up or a renewal is due. You answer in a word, and it's done. More in an AI assistant with no app to download.
Getting things done
Both do real work on websites. Kiwi shows the price first for anything that costs money and waits for your yes, then books, orders, replies or cancels on any site you use.
Work and home
Kiwi works with Outlook, Gmail, Google Calendar and Slack, so it covers your workday as well as your life admin. See an AI assistant for your work email and calendar.
To start, tap Text Kiwi on heykiwi.co.
Questions people ask
Is there a Hark alternative that works in iMessage or WhatsApp? Yes. Kiwi is a free AI assistant you text in Messages on iPhone or on WhatsApp on any phone, with no app to install.
Do Kiwi and Hark train AI on my data? Neither does, according to each one's privacy policy. Kiwi doesn't use your conversations or connected accounts to train general-purpose AI models.
Is Kiwi free? Yes. Kiwi is free to use, with no card needed to start. See Is Kiwi free?