Fer3s

Building @ViralFusion — URL → viral video ad in 60s 🎬 | AI + SaaS | Day 2 of building in public

[Fer3s @Fer3s_dev]

I’ve been retweeting AI UGC systems for months.
Today I start building one.
ViralFusion — paste any URL, get a viral video ad in 60 seconds.
No agency. No editor. No $3,000 invoice.
Day 1 starts now 🧵
#buildinpublic #indiemaker

[Salim @rsalimx]

TikTok slideshows are the most underrated app marketing channel right now. and they take less than 5 minutes to make.

here's how 🧵

Follow the thread and save it

[Fer3s @Fer3s_dev]

Launching viralfusion soon,stay tuned

[Riley Brown @rileybrown]

Vibe Coding with Codex - Complete Guide

Build a Web App, Desktop App & iOS App
with Codex + GPT‑5.5

(No Coding Needed, Beginner Friendly)

In this video you will learn:
> Vibe Coding Basics + Vocab
> How to build a web app using Codex
> Add db, auth + storage with @Firebase
> Github Basics
> Add AI Features (API's)
> Deploy to internet (@vercel)
> Convert Web App into Desktop app & iOS App

Chapters
00:00 Intro
01:12 Setting up Codex
01:57 The basics of Vibe Coding and Codex
02:20 Projects, Files, App
03:45 Example App - Microsoft Paint
04:25 Running app locally
06:39 Save My Code - Use Github
10:37 Quick Review before building app
12:24 Building a web app - The Prompt
15:32 Creating Web App Project
16:34 Explaining Firebase (Database, Storage, Auth)
18:42 Setting up Firebase Project
22:54 Prompting Codex to build our app
24:49 Inspect Element - Console
26:24 Verify Data being Stored in Database
27:51 Making Changes to App
31:29 Fixing Storage Permissions with Codex
32:20 GPT API - Adding AI to our app
36:20 Making more changes using screenshots
39:02 Queuing vs Steering
40:23 Deploying our app to Vercel (App on Internet)
43:09 Convert web app to desktop app and iOS app
47:15 Web App and Desktop App work Now
48:36 Now let's run the iOS app
50:27 All three apps work!
51:11 Making Changes to iOS app
52:51 Testing agent skill feature of our app
53:55 Summary of what we did

[Fer3s @Fer3s_dev]

@ModestMitkus Congratss!! Keep going ,huge inspiration🔥

[Fer3s @Fer3s_dev]

Codex or Claude code?

[Fer3s @Fer3s_dev]

@Nate_Esparza @Engineering 🔥

[Fer3s @Fer3s_dev]

@1Umairshaikh both are equally important in my opinion,you cant sleep on any of them

[Fer3s @Fer3s_dev]

@iishaparekh Disagree slightly.
Marketing is hard because most developers treat it like code.
There's no logic. It's pure psychology.

[Fer3s @Fer3s_dev]

That's about to change.
ViralFusion is going to flip this dynamic completely.
Stay tuned. 👀

[Isha Parekh @iishaparekh]

marketing is 100x harder than programming

[Fer3s @Fer3s_dev]

Day 3 of building ViralFusion
Pasted a real App Store URL
Got back in under 5 seconds:
✅ Product name + rating
✅ 9 images downloaded
✅ Brand colors with hex codes
✅ Key benefits extracted
Step 1 of the pipeline is done
Next: AI searches what's going viral in this niche

[Fer3s @Fer3s_dev]

Local models are the future

[Indu Tripathi @InduTripat82427]

A Chinese engineer just completed an entire client project on an 11 hour flight.

No WiFi. No cloud. No subscription fees.

Just a MacBook Pro M4 with 64GB RAM and a local AI he built himself.

Here is exactly what he did:

Skipped the $25 in-flight WiFi. Loaded Meta's open source Llama 3.3 70B model directly onto his laptop. Built a custom local AI orchestrator to manage the work. Processed the entire project at 71 words per second.

Landed with a finished product.

This is what most people still do not understand about AI in 2026.

You do not need the cloud.

You do not need subscriptions.

You do not need internet.

The models are small enough to run on consumer hardware now. A MacBook with enough RAM IS the data center. The engineer on that flight had more AI processing power in his bag than entire companies had access to five years ago.

Tools like Ollama and LM Studio let anyone run Llama, Mistral, or Gemma locally right now for free.

No limits. No usage bills. No data leaving your machine.

The gap between people who know this and people who do not is only going to get wider.

Your next flight is a dev sprint if you want it to be.

[Fer3s @Fer3s_dev]

SaaS founders: Great product, 0 video ads.
The reason? Production is a nightmare.
I’m building **ViralFusion** to fix it:
1. Paste URL
2. AI finds trends
3. AI generates script + video + voice
From URL to finished ad in < 60s.
Day 2/30. We’re moving. 🛠️

[Fer3s @Fer3s_dev]

I’ve been retweeting AI UGC systems for months.
Today I start building one.
ViralFusion — paste any URL, get a viral video ad in 60 seconds.
No agency. No editor. No $3,000 invoice.
Day 1 starts now 🧵
#buildinpublic #indiemaker

[Fer3s @Fer3s_dev]

@levelsio @cursor_ai @boltdotnew @heyglif @tripoai @s13k_ This is fire🔥

[Fer3s @Fer3s_dev]

“Here’s why I’m building this:
Making a video ad for your app costs $1,000–$3,000 and takes 2 weeks.
ViralFusion does it in 60 seconds for under $1.
The math is embarrassing for agencies. 👇”

[Fer3s @Fer3s_dev]

I’ve been retweeting AI UGC systems for months.
Today I start building one.
ViralFusion — paste any URL, get a viral video ad in 60 seconds.
No agency. No editor. No $3,000 invoice.
Day 1 starts now 🧵
#buildinpublic #indiemaker

[Gaurav @gauravsbuilding]

everything we did to hit $100k ARR in 4 days

[Fer3s @Fer3s_dev]

@FynCas Ugc

[Fer3s @Fer3s_dev]

@spwfeijen Ugc

[Evan Yadegari @EvanYadegari]

I’m 14, and I built a $10K MRR app.

Today, I’m launching https://t.co/PupI7GAowL — the first open-source AI app builder.

Get $5 in free credits when you sign up (no credit card required).