Leif Carstensen

Building @blazemessenger // @zfellows @skydeck_cal

[Leif Carstensen @leifcxn]

‘Brace yourself, legends incoming!’

ChatGPT now replies to my WhatsApp messages for me - from my Apple Watch.

[Leif Carstensen @leifcxn]

v1 works with WhatsApp (iMessage, Telegram next)

We’re shipping fast (no group chat support, but coming in two weeks)

Your thoughts on messaging on smartwatches?
Drop feedback. DMs open. 🙌

[Leif Carstensen @leifcxn]

2025 and WhatsApp still sucks on my Apple Watch.

So we built the fastest messenger ever (even faster than your phone):
· 10k DAU
· 66% D30 retention
· 14+ daily interactions per user

Here’s how we made it work 👇

[Leif Carstensen @leifcxn]

Here's our current version on the App Store:
https://t.co/xm0xUZpCqN

[Leif Carstensen @leifcxn]

https://t.co/htPCzJXX9s

[Leif Carstensen @leifcxn]

This is Blaze Messenger:
• your personal ai companion
• sits on top of WhatsApp etc.
• writes messages for you (& like you)
• helps you manage your conversations
• across all platforms
• all from your wrist

[Leif Carstensen @leifcxn]

There are only two people who’s opinions should truly matter to you. The 8-year old you, full of dreams. And the 80-year old you, full of memories.

[Leif Carstensen @leifcxn]

https://t.co/01wqN8TY2t

[Leif Carstensen @leifcxn]

Introducing Blaze Messenger:
• ai messaging companion
• texts for you (copies your style)
• asks your friends to hang
• manages relationships
• resolves conflicts
• cross-platform (whatsapp, messenger, etc.)

[Leif Carstensen @leifcxn]

We’re bullish on smartwatch texting. Here’s our AI assistant for Apple Watch. Works with WhatsApp:

https://t.co/01wqN8TY2t

[Leif Carstensen @leifcxn]

@andrew__reed Good thing I don’t even know what a Euro scarf is

[Leif Carstensen @leifcxn]

@andrewchen Applied! How big are your batches? Do the teams get to work together in one place?

[Leif Carstensen @leifcxn]

AI + Messaging + Apple Watch = 💥

[Leif Carstensen @leifcxn]

We built an ai messenger on top of WhatsApp

[Leif Carstensen @leifcxn]

“We have PMF”