Caddy
A work assistant in your texts, blue bubbles on iPhone and RCS on Android
Caddy is an AI agent you reach on iMessage, RCS and SMS. To start, text a number. It messages you first rather than waiting to be asked.
At a glance
| Channels | |
|---|---|
| How you start | Text a number |
| Who starts it | Messages you first |
| Is there an app | No app Nothing to install at any point |
| Categories | Personal assistants, Work, Email |
| Can do | Calendar and scheduling,Reminders,Task management,Bookings and reservations,Documents |
| Connects to | Strava |
| Pricing | Unknown |
| Number type | Unknown |
| Contact number | Unknown |
| First message, pre-written | None published |
| Runs on | Linq and Photon (both listed as iMessage delivery infrastructure) (source) |
| Browses with | Browserbase (source) |
| Number carrier | Unknown |
| Status | Live |
Who is behind it
| Company | Caddy |
|---|---|
| Founders | Unknown |
| Based in | Unknown |
| Funding | Y Combinator |
| Investors | Y Combinator |
| Traction | Unknown |
Data and policy
| Trains on your conversations | States it does not“Caddy does not use Customer Data to train AI models.” |
|---|---|
| Data of people who never signed up | Not stated in the policy |
| If you cancel | Not stated in the policy |
| Model providers named | None named |
| Jurisdiction | Not stated in the policy |
| Availability | Not stated |
Read from the published policy on 2026-09-06. Quotes are verbatim. We report what the document says and link it; we do not interpret its legal effect, and policies change.
How it works
Caddy is "your personal AI for everyday work, lives in your texts." It sends a daily brief, triages Gmail, connects to Slack and manages tasks, and texts first when something needs attention.
Its channel handling is worth noting for anyone building here: blue bubbles on iPhone, RCS and SMS on Android. That is the cleanest published example of the fallback ladder most products in this space have to solve, and it is the reason RCS matters even to an iMessage-first product. Y Combinator backed.
Source: caddy.app, checked 2026-09-06. How we source this.