What is App Stack Builder?

App Stack Builder is a free AI-powered tool that helps founders and developers choose the right tech stack for their projects based on budget, app type, team size, and skill level.

What is the best tech stack for SaaS in 2026?

The best tech stack for SaaS in 2026 typically includes Next.js 16 for frontend, Supabase for database and auth, Vercel for hosting, Stripe for payments, and PostHog for analytics. App Stack Builder can generate a personalized recommendation based on your specific budget and requirements.

Is App Stack Builder free to use?

Yes, App Stack Builder is completely free to use. You can generate unlimited tech stack recommendations without any cost.

What types of apps can I build with the recommended stacks?

App Stack Builder supports various app types including SaaS applications, web apps, mobile apps, e-commerce stores, internal tools, and AI/ML products.

How much does a SaaS tech stack cost per month?

A modern SaaS tech stack can cost anywhere from $0-50/month for bootstrapped startups using free tiers, $100-300/month for growth-stage startups, to $500+/month for enterprise-ready infrastructure. App Stack Builder helps you find the best tools within your specific budget.

What is the best tech stack for solo founders?

For solo founders, we recommend Next.js + Vercel (free), Supabase (free tier), Supabase Auth (free), Stripe (pay as you go), and Plausible or PostHog for analytics. This stack can run your entire SaaS for under $50/month.

Can I export my tech stack recommendations?

Yes, you can export your tech stack recommendations as a PDF document or copy them to your clipboard. You can also share a link to your stack with others.

AuthFree tier

SuperTokens: Pricing, Features & Alternatives

SuperTokens provides developer-friendly authentication with email/password, passwordless, social login, sessions, and MFA. It can be fully self-hosted for free or used via a managed cloud with usage-based pricing.

SuperTokens Pricing Plans (2026)

Plan	Price	Highlights
Self-hostedPopular	Free (open source)	Unlimited users · Email & password authentication · Passwordless login
Cloud	$0.02 / MAU (first 5,000 free)	Managed hosting by SuperTokens · Free up to 5,000 MAUs · Automatic scaling

Pricing summary: Free · then usage-based. Always confirm current pricing on the official site.

Key SuperTokens Features

Unlimited users
Email & password authentication
Passwordless login
Social login
Session management
JWT support
Full data ownership
No vendor lock-in

Pros

+Fully open source option
+Very transparent pricing
+Strong session management
+Easy migration from Auth0/Firebase
+Self-hosting supported

Cons

−Advanced features are add-on based
−UI less polished than Clerk
−Cloud add-ons have minimum billing

Best SuperTokens Alternatives

Compare all

Clerk

Free · paid from $25/mo

Better Auth

Free

NextAuth.js

Free · paid plans by quote

Auth0

Free · paid from $35/mo

Firebase Authentication

Free

Kinde

From $25/mo

SuperTokens Compared

SuperTokens vs Clerk SuperTokens vs Better Auth SuperTokens vs NextAuth.js SuperTokens vs Auth0 SuperTokens vs Firebase Authentication SuperTokens vs Kinde

SuperTokens FAQ

What is SuperTokens used for?⌄

SuperTokens is a auth tool. Open-source authentication solution with flexible cloud and self-hosted options, priced per MAU.

Is SuperTokens free?⌄

Yes — SuperTokens has a free tier you can start with, and paid plans for more usage and features.

How much does SuperTokens cost?⌄

SuperTokens is free to use, with usage-based pricing on some features.

What are the best SuperTokens alternatives?⌄

Popular SuperTokens alternatives include Clerk, Better Auth, NextAuth.js, Auth0, Firebase Authentication. Compare pricing and features on our SuperTokens alternatives page.

Not sure if SuperTokens fits your stack?

Get a free, AI-powered tech stack tailored to your budget, app type, and team size — including the best auth pick for you.

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