Built entirely on a smartphone

Start your SaaS today.
No CS degree Required.

We built the boring stuffβ€”logins, databases, and credit card payments. You just plug in your brilliant idea. It's so simple, you can launch it from your phone.

Get 42kit Now Watch the Proof
42kit - Launch a Python SaaS from your smartphone. No laptop needed. | Product Hunt
Test the system yourself! Click Sign In to test our live Authentication & Dashboard.
*Note: You do NOT need to create an account to purchase the code.

Built entirely with 42kit

Hippo Engine

Hippo42Picks πŸ¦›

Live Project

See 42kit in action. Deterministic AI football analytics launched entirely from a smartphone.

See the 100% Mobile Workflow πŸš€

"Watch us launch a fully functioning SaaS dashboard right from a smartphone."

Stop wasting 40 hours on the boring stuff.

The SaaS Trap ❌

You have a brilliant core logic idea, but before you can test it, you're forced to build:

  • > Auth Systems (JWT, Cookies)
  • > Password Recovery Emails
  • > Stripe/LemonSqueezy Webhooks
  • > User Dashboards
  • Result: Burnout before launch.

The Axiomatic Way βœ…

42kit provides the absolute foundation. Nothing more, nothing less. Pure logic.

  • 1. Buy 42kit.
  • 2. Paste your API keys.
  • 3. Plug in your core logic.
  • Launch today.

Your SaaS in a Box πŸ“¦

Think of this as a fully furnished restaurant. The doors, the cash register, and the tables are ready. You just bring the food.

The Business Infrastructure

  • The Storefront (Beautiful UI/UX) A professionally designed landing page that looks perfect on both PCs and mobile phones. No design skills needed.
  • The Digital Warehouse (Database) Powered by Google Firebase. It safely stores your customers' accounts and credit balances without you needing to manage complex servers.
  • The Engine Room (Logic Area) A clean space waiting for your idea. Just paste your custom tool, AI script, or business logic here.

πŸ’° Ready-to-Earn Features

  • βœ“

    The Front Door (Memberships)

    Customers can Sign Up, Log In, and get their emails verified immediately. A complete member system.

  • βœ“

    Auto-Receptionist (Password Recovery)

    Real, functioning "Forgot Password" emails sent directly to your users. Zero customer support required from you.

  • βœ“

    The Cash Register (Payments)

    We wired the connections for Stripe and Lemon Squeezy. When a customer pays, their credits update automatically.

  • βœ“

    Smart Credit Wallet

    A built-in dashboard where users see their credits go up when they pay, and go down when they use your product.

Engineered for Developers

No fluff. Just the cleanest, most efficient stack for indie hackers.

⚑ The Tech Stack

  • Backend: FastAPI (Python) Ultra-fast, lightweight routing. Perfect for AI, Data Science, and rapid prototyping.
  • Database: Firebase Firestore NoSQL, infinitely scalable, and takes 2 minutes to connect via Service Account.
  • Security: PyJWT Authentication Stateless, secure HTTP-only cookies. No bloated external auth providers required.
  • Frontend: TailwindCSS + Jinja2 Mobile-first, responsive UIs without the massive React/Vue compilation overhead.

Ready-to-Launch Features

  • βœ“

    Complete Authentication Flow

    Sign Up, Log In, Dashboard protection, and route security configured out of the box.

  • βœ“

    Automated Password Recovery

    Built-in SMTP email system with secure token generation for "Forgot Password" scenarios.

  • βœ“

    Passive Payment Webhooks

    Pre-written endpoints for both Stripe and Lemon Squeezy to automatically add user API credits.

Loved by Developers

See how founders are shifting from bloated frameworks to 42kit.

β˜…β˜…β˜…β˜…β˜…

"How awesome is this software!!! I am currently developing my own CRM and support SaaS.. Talk about perfect timing!!!!!! I am still a way out till my app is complete but 42kit just made it happen that much quicker because I don't have to deal with this part of the program that would have been a pain to build out myself and not to mention how important this part of the program is to get right and not to mention, make secure! Especially when you are dealing with your customer account, support and payments."

"I can't wait to wrap it around my creation to bring it to market. Honestly though, I was going to build my app only for me but now... I can offer it to my clients while feeling good about doing it the right way!"

JL

Jay Lusignan

CRM & Support SaaS Founder

Simple pricing. Full ownership.

Pay once, own the code forever. No recurring subscriptions.

First Kiss πŸ’‹

$42/ lifetime
  • βœ“ Full FastAPI Source Code
  • βœ“ Secure JWT Auth & Dashboard
  • βœ“ Automated Email SMTP System
  • βœ“ Stripe & LemonSqueezy Integration
Get First Kiss
Marketing Optimized

Infinite Kisses πŸ’‹πŸ’‹πŸ’‹

$142/ lifetime
  • βœ“ Everything in First Kiss
  • βœ“ High-Conversion Landing Page UI (This Exact Page)
  • βœ“ Psychological Sales Copywriting
  • βœ“ SEO Ready & Lighthouse Optimized
Get Infinite Kisses

Engineered for Performance

⚑

Lightweight

Minimal dependencies. Fast boot times.

πŸ“±

Mobile First

Flawless design on all devices via Tailwind.

πŸ”’

Secure

HTTP-only cookies and JWT security built-in.

πŸ•ΈοΈ

Webhooks

Asynchronous payment processing ready.

SaaS Boilerplate Python FastAPI Template Firebase Auth Stripe Integration Lemon Squeezy Mobile Development Pydroid 3 Indie Hacker Tools Passive Income Software Template Independent Developer Thailand