How I Built AikitPros: 30-Second AI Ad Copy Generator on Ace Data Cloud

#indiehackers #ai #buildinpublic #saas

Most marketers don't need another AI suite. They need 3 headlines, 3 hooks, and 3 CTAs in under a minute.

That's the entire premise of AikitPros. You paste a product description, hit generate, and ~30 seconds later you have ad copy ready to test. No signup for the demo, no $9/month commitment, no "talk to sales."

Why I built it on Ace Data Cloud

Ace Data Cloud bundles GPT-4o, image, audio, and video endpoints behind a single API key with pay-per-use billing. For a single-purpose tool like this, that pricing model is critical: my users only pay for what they generate, and I only pay for what they use. No floor cost, no idle compute.

Architecture in one paragraph

Static landing page (HTML + vanilla JS) on Vercel → /api/optimize serverless function → Ace Data Cloud GPT-4o chat completion → structured JSON parse → render headlines/hooks/CTAs back to the browser. End-to-end latency typically lands at 3–5 seconds. The whole thing is under 200 lines of meaningful code.

// /api/optimize.js (simplified)
const res = await fetch('https://api.acedata.cloud/v1/chat/completions', {
  method: 'POST',
  headers: { Authorization: `Bearer ${process.env.ACE_API_KEY}` },
  body: JSON.stringify({
    model: 'gpt-4o',
    messages: [{ role: 'user', content: buildPrompt(headline, body) }],
    response_format: { type: 'json_object' }
  })
});

What I learned switching from $9/mo to credits

I started with a $9/month plan because that's what every SaaS guide says to do. It was wrong for this product. Users generate ad copy weekly, not daily. Locking them into a recurring bill created refund requests and churn.

I removed the subscription entirely — free tier (1 generation, no signup) plus credits at ¥0.7 each, never expire. ARPU went up because heavy users buy 100-credit packs upfront, and churn became a non-concept.

Bilingual SEO that actually works

Two landing pages — EN at /landing.html, ZH at /landing-zh.html — with proper hreflang (en, zh-CN, x-default), canonical URLs, Open Graph + Twitter Card, and JSON-LD SoftwareApplication schema.

This is table stakes but most micro-SaaS skip it. Within hours of deployment Google was indexing both versions correctly.

What's next

Image and video ad asset generation through the same Ace Data Cloud API surface. The headline-to-CTA flow is just the start; the goal is one prompt → full campaign in under a minute.

If you're building something similar on top of Ace Data Cloud, I'm @aikitpros on X. Happy to compare notes.