Launch your
vibe coded app
this weekend
RailsFast is the best Rails SaaS boilerplate for vibe coding. Optimized to get you to make your first $1 fast. Payments, auth, DB, deployments, backups: everything already done and working. Clone the starter kit, tell Claude Code or Cursor what to build, and launch.
Builders are shipping with RailsFast
Everything included
"Super excited. I purchased the day you announced. I'd be happy to purchase again."
"So good! I'm a big fan of the gems!"
"Loving the product and the docs! I learned a lot just by reading the setup template. Only with that I already felt it was worth paying."
"A Rails template so you don't need to rely on vibe-coding for your auth/billing"
"Vibecoding is amazing. But you're doing it wrong. Once you go past 1,000 lines, you've created a spaghetti monster you have to beg to run. Solution: use a base template optimized for vibecoding. RailsFast is EXACTLY THAT."
"Rails templates like this are underrated. Vibe-coding is fun for experiments but auth/billing bugs in production are painful. Boring infra should just work."
"Bought it to support more Rails devs. Hoping to learn from RailsFast!"
"The RailsFast template allows me to prototype ideas without having to fully code the main features myself anymore. What drew me to RailsFast was the AI integration"
"Super excited. I purchased the day you announced. I'd be happy to purchase again."
"So good! I'm a big fan of the gems!"
"Loving the product and the docs! I learned a lot just by reading the setup template. Only with that I already felt it was worth paying."
"A Rails template so you don't need to rely on vibe-coding for your auth/billing"
"Vibecoding is amazing. But you're doing it wrong. Once you go past 1,000 lines, you've created a spaghetti monster you have to beg to run. Solution: use a base template optimized for vibecoding. RailsFast is EXACTLY THAT."
"Rails templates like this are underrated. Vibe-coding is fun for experiments but auth/billing bugs in production are painful. Boring infra should just work."
"Bought it to support more Rails devs. Hoping to learn from RailsFast!"
"The RailsFast template allows me to prototype ideas without having to fully code the main features myself anymore. What drew me to RailsFast was the AI integration"
Save hundreds of hours building your idea and get your first customer, fast
Let's be honest: all software is 90% the same. We all need to take payments, authenticate users, send emails, handle uploads, do backups... That's exactly what RailsFast handles: the undifferentiated heavy lifting, so you (and your AI) can focus on the 10% that actually matters.
Bypass repetitive work
90% of building a SaaS is setting up stuff over and over again. RailsFast eliminates time drains like manually setting up payments, authentication, backups... which can take hundreds of hours.
Engineered for revenue
RailsFast has been engineered for revenue from the ground up. Every decision has been made with making revenue and running a business as easy and straightforward as possible.
Optimized for #1 ranking on Google & LLMs
Everything in RailsFast has been SEO optimized from the beginning so you get more traffic. Get Google to understand and rank your page higher, and OpenAI and LLMs to discover your site easily.
Rails: your secret weapon for vibe coding
The world's best startups use Rails, and even Y Combinator recommends Ruby on Rails as the best framework for AI-assisted coding. RailsFast gives you a head start.
Build anything you can imagine
RailsFast is perfect for you, whether you're building a B2B SaaS, a consumer app, or any kind of web application. Here are some ideas of the kind of things you can make come true with RailsFast:
Battle-tested with millions of real users
- I've been building, shipping, and scaling Rails apps for the last 10+ years
- I built and sold PromptHero, one of the biggest AI image communities on the internet, scaling it to 4 million monthly users on the exact stack you're getting with RailsFast
- I've made 15+ open source gems for Ruby on Rails, with over 120,000+ downloads
- This exact stack generated me millions of free SEO clicks over the years
RailsFast scores 10/10 email deliverability on mail-tester.com and has generated millions of impressions and clicks in Google SEO
Everything you need to go from zero to money-making business
RailsFast comes with pretty much everything you'll need to build and run a software business: it's almost a startup-in-a-box. It's a complete full-stack (front-end + back-end), production-ready system – not just a toy or a simple front-end boilerplate.
Users & authentication
Allow your users to register and log in securely. You own and control everything, all data, no need for 3rd party integrations that can be hacked or misconfigured.
- Email/password authentication
- Recover lost password flow
- Email confirmation flow
Payments
Start taking payments and collecting revenue on day one. Full Stripe integration with subscriptions, one-time payments, webhooks, and customer portal.
- Both subscriptions and one-time payments
- Webhook handling
- Customer portal to self-manage subscriptions
Database & migrations
RailsFast comes with PostgreSQL as its database. It's fully configured and ready to go with all migrations out of the box, so you don't have to worry about a thing.
- Postgres is the industry de-facto standard
- Production-ready, ready to power big apps
- Scalable & easy to migrate to managed
Emails
Send transactional emails that look professional and well-branded out of the box. Works for all email clients without having to write any email-specific HTML.
- No more ugly plain text emails
- Comes with signup + payments email flows
- Integrates with SES for cheap emailing
Background jobs & Cron
Schedule and run async tasks at any time. Have a horde of robots working for you in the background, organizing data and performing long-running operations.
- Error handling
- Configurable retries
- Schedule tasks as if they were cron jobs
File uploads
Allow your users to upload images and files to your app, like user avatars, post content, blogpost attachments, etc. Comes with image processing out of the box.
- Scale images to different sizes automatically
- Optimize images for webp automatically
- Works with any S3-compatible storage
Where others stop, we double down
Most boilerplate templates stop where the difficult parts begin. We tackle them head-on. That's why RailsFast ships with robust, elegant solutions to common yet complex SaaS problems that you'd need expensive subscriptions or hundreds of hours in engineering to solve.
Pricing plan enforcement
It's one thing to charge money, but it's a completely different thing to define pricing plans and enforce their limits.
- Avoid users going over their plan limits
- Gate access to features based on plan
Usage credits
Most AI apps use some sort of credits system to charge for usage. Fully-featured, robust and production-ready credits system.
- Credits with monthly/weekly/yearly refill
- Allow users to buy power packs at any point
Fake users protection
Blocks disposable emails from signing up to your app, automatically. Prevent unauthentic usage (fake, bot & spam users) in your app.
- Built-in CAPTCHA protection with Turnstile
- Daily update of disposable domain names
Vector database & RAG
RailsFast comes ready to work with pgvector if needed, making your project capable of RAG and AI retrieval.
- Turn your DB into a vector database with RAG capabilities
- No 3rd party databases needed
AI rules & context
Ships with pre-written Cursor rules and rich context that teach agents exactly how your app works, and how to build it right.
- The AI understands your codebase at a glance
- Ready to work with Context7 for extra context
Generative AI & LLMs
RailsFast works out of the box with generative AI services like Replicate or Fal; and LLM APIs like ChatGPT, Claude, etc.
- Build AI-heavy apps easily
- Leverage the most popular AI APIs
Monitoring
Get a status page to check the health of your business at a glance: not only technical systems, but business metrics too.
- Add simple smoke tests to monitor app health
- Ready to use with uptime services
Self-serve API keys
Offer your service as an API easily. Allow users to get a secure API token to interact with your API, and auth them easily.
- Dashboard to manage and self-serve API keys
- Secure token-based API authentication
MRR dashboard
Know instantly key metrics for your SaaS like MRR, ARR, valuation & churn. Keep an eye on the health of your business.
- How much is your business worth?
- See valuation & churn calculations at any point
Caching
Cache entire pages or parts of pages so that your server doesn't read from DB on every request. It just takes one line of code.
- Speed up the load time of any page easily
- Avoid your database being the bottleneck
Backups
Back up your entire database to the cloud automatically. Daily backups by default, but change easily to hourly, weekly, etc.
- All working out of the box
- Backups live in the cloud for resilience
Rate limiting & scraping protection
Prevent users from making too many requests to your app or API, and protect from DDoS attacks and scraping attempts.
- Add rate limiting to any page or action
- Only one line of code required
SEO & Metadata
Rank higher on Google and get discovered by LLMs easier. Everything in RailsFast is optimized for SEO, with the right metadata.
- Easily set OG metadata for FB, X, Discord...
- Set dynamic social images per page
Hosting & SSL
Deploy your app easily into any VPS with one single command. All traffic is secured with SSL certificates.
- Free, auto-renewable SSL certificates
- Deploy to your server with one command
Secrets
Other templates handle secrets in insecure ways. All secrets and credentials in RailsFast are encrypted and never commited to git.
- Prevent credential leaks
- No ENV gymnastics needed
Analytics & admin dashboard
Manage users, view analytics, and monitor your business metrics.
- User management
- Analytics dashboard
A library of UI components to build at the speed of light
- Hero
- Navbar
- Pricing cards
- Features
- Bento & grid
- FAQ
- Footer
- Testimonials
- ...and more
RailsFast UI is built with Tailwind CSS, so you can bring your own components or any paid design system like Tailwind Plus
Stop getting surprise Vercel bills. RailsFast runs on $5 servers.
| Vercel and similar |
Your own VPS server
The RailsFast way
|
|
|---|---|---|
| Monthly price |
😳 $1,000+ Surprise bills
|
FLAT Predictable, fixed price
|
| Viral traffic | ❌ Unpredictabe bills of thousands of dollars if your site goes viral or traffic spikes suddenly | ✅ Plenty of TBs of traffic are usually included with most VPSs, and overage is cheap |
RailsFast is your fastest route to: «I just made my first $200 while I slept last night, holy shit!»
Start riding the vibe coding wave today
One-time purchase. Lifetime access. No subscriptions.
Startup
For indie hackers, entrepreneurs, and startups building their own projects.
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Everything included: auth, payments, database, backend, background jobs, deployment, SEO optimizations...
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Unlimited personal projects you own
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Commercial purposes allowed
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Lifetime access: buy it, keep it forever
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1 year of updates included, with optional updates after
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Standard support
Agency
For agencies, companies, and freelancers building projects for other people.
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Everything included: auth, payments, database, backend, background jobs, deployment, SEO optimizations...
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Client projects allowed (pays for itself with a single client project!)
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Use on unlimited client projects
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Commercial purposes allowed
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Lifetime access: buy it, keep it forever
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1 year of updates included, with optional updates after
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Priority support
Frequently Asked Questions
Stop scrolling.
Start shipping.
You could be running your own software business by next week.
Pro tip: browse the docs, they're free to read!
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