Yves

Software Engineer | Building — Create polished product demos from any web app (URL + prompt)

[Yves @YvesDC0]

Been building the Castfy landing page + waitlist with @le_con82546

Simple, clean, and focused on the core value: URL + prompt → polished product demo video.

Still early — iterating every day.

What do you think of the direction so far? Any feedback welcome 👇

#BuildInPublic #SaaS #IndieHackers

[Yves @YvesDC0]

@CryoberryWeb Light

[Yves @YvesDC0]

Before Castfy: 45 minutes of manual recording + editing a simple Notion budget table demo.

After Castfy: URL + prompt → AI handles navigation, data entry, cuts dead time, adds voice-over.

Here’s the result ↓

Which version would you rather send to customers?

#BuildInPublic #SaaS

[Yves @YvesDC0]

Day 24 of building Castfy in public.

One small milestone I'm excited about:

Castfy can now handle login flows that require manual OTP verification.

It auto-fills the email, waits for the OTP, then continues on its own—navigating the app, completing tasks, and producing a polished demo video.

In today's test, it created and filled a budget table in Notion.

Sensitive information is automatically masked in the exported video.

The goal is simple:
Give Castfy a URL + prompt, and let AI create the demo.
If this saved you hours of recording and editing, would you use it?

#BuildInPublic #SaaS #IndieHackers

[Yves @YvesDC0]

@ihirwart This design is so clean.

[Yves @YvesDC0]

@le_con82546 Thanks

[Yves @YvesDC0]

@le_con82546 Thanks!

[Yves @YvesDC0]

Day 24 of building Castfy in public.

One small milestone I'm excited about:

Castfy can now handle login flows that require manual OTP verification.

It auto-fills the email, waits for the OTP, then continues on its own—navigating the app, completing tasks, and producing a polished demo video.

In today's test, it created and filled a budget table in Notion.

Sensitive information is automatically masked in the exported video.

The goal is simple:
Give Castfy a URL + prompt, and let AI create the demo.
If this saved you hours of recording and editing, would you use it?

#BuildInPublic #SaaS #IndieHackers

[Yves @YvesDC0]

@CryoberryWeb Appreciate it!

That's the vision, URL + prompt → polished product demo with minimal manual work.

[Yves @YvesDC0]

@CryoberryWeb Thanks! That's what I'm aiming for—less time editing and more time sharing polished demos.

[Yves @YvesDC0]

Day 23 of building Castfy.

Just shipped audio syncing for AI voice-overs.

Now the narration lines up perfectly with on-screen actions, making demos feel much more natural and professional.

MCP records the flow, AI automatically cuts dead time, and the voice-over stays in sync.

Still building every day.

Would AI voice-overs in your product demos be useful?

Yes/No—or share your thoughts 👇

#BuildInPublic #SaaS #IndieHackers

[le con @le_con82546]

Still waiting for this mn. and i have already joind on https://t.co/wrMhMJ0jeH

[Yves @YvesDC0]

@le_con82546 100% that's what we are building

[Yves @YvesDC0]

@le_con82546 We're launching soon

[Yves @YvesDC0]

@le_con82546 Thanks

[Yves @YvesDC0]

Day #22 of building Castfy.

Just shipped auto-cut for dead time in recorded videos.

The AI automatically removes loading screens, waiting time, and awkward pauses—so demos feel faster, tighter, and more engaging.

MCP handles the tool selection + recording. Then AI cleans up the final video automatically.

Building in public every day.

What's the most annoying part of recording demo videos for you?

#BuildInPublic #SaaS #IndieHackers

[Yves @YvesDC0]

@4Deependrayadav Absolutely! Feel free to DM me.

[Yves @YvesDC0]

@ihirwart Appreciate it!

[Yves @YvesDC0]

@xxxxx_652 I agree, that's one of the workflows I've been thinking about. Auto-cut is one step toward reducing editing, but patching a single changed step would be even more powerful.

[Yves @YvesDC0]

This is clean

[Irere @ireredotdev]

im highly impressed by @daisydotnow screenshots as always

high recommend this tool for now one launching an app to the google play and appstore

[Yves @YvesDC0]

@korba_jr Exactly! This is the bigger shift I’m excited about. 🙌

[Yves @YvesDC0]

Many builders hate recording demos manually — especially when the UI changes and you have to do it all over again.

Castfy fixes that: just paste URL + prompt → AI creates realistic flows (like this GitHub login example I tested).

Still building every day.

What’s one flow you hate recording manually the most? Reply 👇

#BuildInPublic #SaaS #IndieHackers

[Yves @YvesDC0]

Phone-recorded this while testing Castfy.

Gave it a GitHub URL + prompt → watch the AI automatically navigate and fill login details in real time (stopped before submitting for safety).

No manual screen recording. No editing. Just URL + prompt = realistic demo flow.

This is exactly what Castfy does: turns any web app into a polished product demo video in minutes.

Tired of re-recording demos manually? Reply with your biggest pain 👇

#BuildInPublic #SaaS #IndieHackers