What You'll Learn
The most common complaint from new vibe coders: "I ran out of credits and my app isn't done." Credits aren't unlimited, and treating them carelessly is like leaving money on the sidewalk.
This guide shows you exactly how to estimate costs upfront, which tasks eat the most credits, and 5 techniques to stretch every prompt.
Why Credits Run Out Faster Than Expected
Each prompt = 1 credit. But "undo that" = 1 credit. "Actually, change the color" = 1 credit. "Wait, go back" = 1 credit.
A 30-prompt app can easily become 60 prompts if you're not intentional. Half your credits go to fixing mistakes and changing your mind — not building features.
Warning: The biggest credit killer isn't building. It's rebuilding.
How to Estimate Credits Before Starting
Here's a rough rule of thumb:
| App Complexity | Examples | Estimated Prompts |
|---|---|---|
| Simple | Landing page, contact form, portfolio | 10–15 |
| Medium | Auth, CRUD, 3-5 pages, database | 25–40 |
| Complex | Payments, real-time features, admin panel | 50–80+ |
5 Techniques to Use Fewer Credits
1. Plan Before Prompting
Every minute planning saves 2-3 credits. Fill out the app brief template before you write your first prompt. Know exactly what you're building before you start.
2. One Feature Per Prompt
Don't cram 5 features into one prompt. When it inevitably fails, you retry, and you've burned 3 credits on something that should have been 5 separate, successful prompts.
The rule: one feature, test it, then move on. Build incrementally.
3. Use Free Tools for UI Inspiration First
Browse Dribbble, screenshot what you like, describe it in your prompt. The AI builds it right the first time instead of 3 tries of "no, more like this."
A reference image or a clear description like "minimal design similar to Linear with a white background and subtle gray borders" beats "make it look modern" every time.
4. Fix Bugs With Targeted Prompts
Don't say "fix my app." That's vague, and the AI will change things you didn't want changed.
Instead:
The login button doesn't redirect to the dashboard after successful authentication. Fix only this. Don't change anything else.
Specific prompts = specific fixes = fewer credits wasted.
5. Know When to Switch Tools
If Lovable is eating credits on complex backend logic, export to Cursor where you get more prompts with a subscription. Use Lovable for UI and layout. Use Cursor for logic, database queries, and API integrations.
There's no rule that says you have to build everything in one tool.
Which Tasks Burn the Most Credits
Not all prompts are equal. Here's what tends to eat credits fast:
| Task | Credit Cost | Why |
|---|---|---|
| Complex backend logic | High (5-10+ prompts) | AI often needs multiple attempts |
| Design iterations | Medium-High (3-8 prompts) | "Make it more modern" is too vague |
| Authentication setup | Medium (2-4 prompts) | Lots of moving parts |
| Simple page additions | Low (1-2 prompts) | Straightforward for the AI |
| Copy/text changes | Very Low (1 prompt) | Almost never fails |
Pro tip: Keep a notepad of every prompt you send and what it achieved. After one build session, you'll see exactly where you're wasting credits.
Estimate Your Build
Want a quick estimate before you start? Use the Credits Calculator — plug in your features, get an estimate of how many prompts you'll need and what it'll cost.
Built by Us
This guide is based on real builds. gptsters.com is built with vibe coding — see for yourself.