STOP Paying for Google Antigravity (Use THIS Instead)

Kristoffer · March 9, 2026 · 10 min read

This app just hit over $1 million MRR in less than 10 months after launch. And the craziest part? I just built a clone of it — in less than 30 minutes — without writing a single line of code and without paying for any software.

In this guide, I'm going to show you exactly how to do it yourself, step by step. By the end, you'll have a fully working app you can publish and start making money with — starting today.

Why This Matters

Professional web development is hard. Normally you need years of study, expensive tools, or a whole team of developers. But there's an AI builder called Mocha that changes everything. It lets you build complex apps using nothing but prompts and images — entirely from your browser.

I created 4 simple steps which will take us from nothing to a fully functioning full stack app in just a few minutes, only using AI. No coding required. No expensive software. And done in less than 30 minutes.

Step 1: Study the App You're Cloning

Before we build anything, we need to understand why Timeleft has done so well.

Right away, you notice the landing page is clean, has minimal text, clear images, and a bright color scheme that grabs attention without overwhelming the user. Take note of this — it'll help Mocha with the design.

Here's another standout feature — their onboarding process. Each question has short, clearly defined answers. A new user can fly through it in just a few minutes.

Even the final dashboard is just as simple and intuitive. Grab a screenshot of this page — it'll save us from typing huge blocks of text later.

Step 2: Generate the Perfect Prompt with Opus 4.6

You can start building the moment you set up your Mocha account. Click the button to create a new app — there's a section where you enter your prompt.

But we need to make sure our prompt is very specific so that Mocha will be able to build an app that meets all our needs. Without the right prompt, the app will be very basic and lack the features we want.

We'll be using Opus 4.6 because it's the best model out there that can easily understand vague instructions. Here's what we're going to do:

  1. Describe your idea in simple terms to Opus 4.6
  2. Tell Opus 4.6 which AI app builder you're using so it can customize the prompt accordingly — for this walkthrough, we're choosing Mocha

Behind the scenes, Opus 4.6 takes your one-sentence idea and breaks it into features, mapping out user flows, adding all the technical details the AI actually needs. It structures everything perfectly for Mocha and fills in gaps you might not have even thought of.

Now paste this prompt into Mocha and see what it generates.

Step 3: Build and Iterate

First Build Results

After a few minutes, Mocha gives us a working first version. Before we continue, let's appreciate how easy that was:

I have Antigravity installed on my computer and have paid for it, and I had to look up several tutorials on how to configure the various models. I ended up just picking the first one that worked because it was getting frustrating.

Mocha provides an easier workflow by abstracting away all these complexities and letting us just focus on creating our app.

Improving the UI

The main dashboard page could use work because it isn't good enough to grab attention. Here's something powerful — while we could describe the layout with words, it's better to use Mocha's feature that lets us instruct the chatbot using images.

Take that Timeleft screenshot and ask the chatbot to make our dashboard page look similar to the attached image. Mocha scans the image and gets to work — and just like that, the dashboard page has been transformed.

While Antigravity has a similar feature, I found it not as straightforward. You might have to change models just to get it working. Antigravity also uses much more processing power than Mocha for the same operations — problematic if you're multitasking or on an older machine.

Adding some simple animations like scroll effects and lazy loading images makes the landing page a lot better. Just tell Mocha to do this, and after a few minutes — it's done.

Adding the Onboarding Flow

The onboarding section is important when deploying your app because it gives new users all the information they need to use the app properly, which improves user satisfaction and increases MRR.

Tell Mocha to create this, and in just a few seconds — the onboarding flow is working perfectly. You can tweak the questions to your liking using the chatbot.

[!NOTE] Mocha doesn't create an exact clone of attached images. It looks at the general design and creates something similar. This is actually a good thing because you'll end up with a unique product instead of a copy.

Adding an Interactive Map

See the feature where you can view events on a map? Adding an interactive map with Antigravity was something I really struggled with — I had to look up multiple tutorials and it took a frustrating amount of time.

With Mocha, all I need to do is tell the chatbot to add events to an interactive map so logged-in users can view meetup details by clicking location pins. In just a few minutes — we have an interactive map with event pins.

I tried the same task with Antigravity, but it kept failing after thinking for way too long. After a few tries, I hit rate limits — meaning I had to spend money to keep using something that felt like it was fighting me the whole way. Meanwhile, Mocha just did the same thing very smoothly.

Fixing Bugs with Mocha

When we scrolled to the map section, the page was empty — probably an error. In normal software development, I'd have to dig into the code and hunt for where it's breaking, which is very time-consuming and incredibly difficult.

But with Mocha, just say "the event details page doesn't show anything", and Mocha goes into the code, finds the mistake, and fixes it — while you just watch. It does this in minutes.

Step 4: Monetization & Payments

We can't lose sight of why we're building this app — we're doing all this work to make money. Since our app is essentially an event listing app, there are several monetization options:

The fact that Timeleft is making serious cash proves there's an underserved niche for this type of service.

For now, let's tell Mocha to create a pricing flow that charges users for every event listing using Stripe. And just like that — we have a working payment integration.

I have a software development background, and I can tell you — integrating payments is one of the hardest and most time-consuming tasks. At minimum, it takes a few days to set up correctly. Mocha does this in minutes, and it actually works.

Email Sequences

Every app you use gives you some kind of email notification — they're the best way to keep your users loyal. With Mocha, this is easy because they can send emails on your behalf using their built-in feature. No need to purchase any external email service or set up complicated APIs.

Simply prompt Mocha to set up email sequences for specific tasks, and it handles everything. You can even customize which email address sends the emails by clicking the "Emails" button and going to settings — great for setting up your custom domain to make your app appear professional.

Built-in Analytics

Here's another very cool feature — analytics. When you launch your app, you can check how your app is performing in terms of traffic and app usage. Usually analytics are very hard to set up, but with Mocha you don't even have to think about it — the analytics are there from the very start.

Pre-Launch Checks

Security Audit

Before releasing to users, we need to make sure personal information is safe. We could hire a freelance cybersecurity professional, or we can give the task to Mocha.

Tell Mocha to do a detailed security audit and provide a breakdown of all errors found, plus clear instructions on how to fix them.

This security audit was generated in a fraction of the time — and it's as detailed as something I'd expect from a highly-paid security professional. And I still haven't hit usage limits. Antigravity and other AI builders would already be warning me, but not Mocha.

[!TIP] When implementing security fixes, go through each recommendation one by one rather than asking Mocha to handle everything at once. Nothing will bleed users from your app faster than security vulnerabilities. Take your time here — the end result will be worth it.

Performance Audit

Timeleft is built effectively — I've tested it in various browsers and it hasn't frozen once. We should make sure our app is just as fast.

Instruct Mocha to do a thorough performance audit and generate a report with prompts to implement the suggested fixes. While not as critical as the security audit, take time to implement all the suggestions. We want our first users to have the best experience so they're motivated to become paid members.

Deploying the App

This is the easiest part — all we need to do is hit the publish button.

You can either edit the domain in Mocha's settings or connect a custom domain. Both options are straightforward and won't take more than a few minutes.

[!TIP] Connect a custom domain during your official launch so that the app looks more premium and professional.

After a few minutes — your app is live!

Bonus: Marketing Strategy

Most people don't even think about marketing when building their app — they get reminded of it when everything is done, and that's backwards thinking. The distribution and marketing strategy should be baked into the product itself.

Step 1: Reverse Engineer Where Your Users Gather

Since this is an event/meetup app, where do your target users hang out? Reddit — specifically:

These are communities with millions of members who are actively looking for ways to meet new people and attend social events.

Step 2: Provide Value First

Create a free guide — like "10 Ways to Meet People in a New City" or "The Ultimate Guide to Hosting Community Events" — and share it in these communities. It provides genuine value, and people will engage with it.

Inside that guide, include a simple line like: "Want to discover local events and meetups near you instantly? Try [Your App Name]."

That's the best funnel to start with because it costs nothing, and there's huge opportunity for organic growth.

Step 3: Scale the Strategy

You can do the same thing on Gumroad — post a free event planning toolkit, a community building framework, or a social networking checklist, and funnel users from there into the app.

You can do this everywhere — Twitter/X, LinkedIn, TikTok, and more. But the strategy is always the same: don't sell the app, sell the experience and the need. The app is just the best way to find and attend great events.

Recap

We've gone from a simple idea to a fully-fledged app in less than 30 minutes. We haven't written a single line of code, wasted time with complex design software, or spent hours testing on different browsers and devices — issues that are just facts of life in normal software development.

You can use these exact steps to bring any idea to life.

Ready to start building?

Happy building!