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.

Paddle vs Stripe: Which is Better in 2026?

Name: App Stack Builder
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Payment Gateway

Choosing between Paddle and Stripe? Both are popular payment gateway tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.

Paddle is for: SaaS and software companies who want a merchant of record to handle sales tax, VAT, fraud and buyer support.

Stripe is for: Developers who want card and wallet payments through an API, with billing, tax and a merchant-of-record option from the same company.

Quick verdict

There’s no single winner; pick on your constraint. Choose Paddle if you sell software globally and don’t want to register for VAT and sales tax. Choose Stripe if you want to build checkout and billing through an API.

Paddle vs Stripe — Side by Side

	Paddle	Stripe
Category	Payment Gateway	Payment Gateway
What it is	Payments and billing platform	Payments platform
Merchant of record	Yes	No by default; yes with Managed Payments (+3.5%)
Online card fee	5% + 50¢, tax handling included	2.9% + 30¢ (US)
Monthly fee	None	None
Built for	SaaS and software	Online businesses of any size
Pricing	Usage-based	Usage-based
Starting price	Pay-as-you-go	Pay-as-you-go
Free tier	—	—
Best for	Payment Gateway — merchant of record, SaaS, global tax	Payment Gateway — payments API, developers, global cards

Pros & Cons

Paddle

Merchant of record: collects and files sales tax for you
Fraud, chargebacks and buyer support included
No monthly or migration fees

5% + 50¢ costs more per sale than a plain gateway
Products under $10 need custom pricing
Custom rates only through sales

Stripe

Cards, ACH and wallets through one API
No setup or monthly fees
Merchant of record available through Managed Payments

You handle sales tax unless you add Managed Payments (+3.5%)
International cards and currency conversion add fees
$15 per dispute

Key Features Compared

Paddle

Pay-as-you-go: 5% + 50¢ per checkout transaction
Merchant of record: collects the right tax rate and files sales tax returns for you
Payments, checkout, subscriptions and billing in one platform; fraud, chargebacks and buyer support included
No monthly, migration or hidden fees; no lock-in period
Custom pricing for high volume; contact Paddle for products under $10

Stripe

US cards and wallets: 2.9% + 30¢ per successful transaction; +0.5% manually entered, +1.5% international, +1% currency conversion
ACH Direct Debit: 0.8%; Billing: 0.8% of billing volume
Disputes: $15 per dispute
No setup or monthly fees on standard pricing
Managed Payments: Stripe becomes merchant of record for 3.5% on top of standard processing fees

Choose Paddle if…

You sell software globally and don’t want to register for VAT and sales tax.
You want chargebacks and buyer support handled for you.
You want subscriptions and checkout from the same vendor.

Paddle review & pricing

Choose Stripe if…

You want to build checkout and billing through an API.
You want to handle tax yourself now and add a merchant of record later.
You want cards, ACH and wallets from one account.

Stripe review & pricing

Frequently Asked Questions

Is Paddle better than Stripe?⌄

What is the difference between Paddle and Stripe?⌄

What it is — Paddle: Payments and billing platform. Stripe: Payments platform. Merchant of record — Paddle: Yes. Stripe: No by default; yes with Managed Payments (+3.5%). Online card fee — Paddle: 5% + 50¢, tax handling included. Stripe: 2.9% + 30¢ (US). Built for — Paddle: SaaS and software. Stripe: Online businesses of any size.

Paddle vs Stripe: which is cheaper?⌄

Paddle pricing: Usage-based. Stripe pricing: Usage-based. Confirm current pricing on each tool's official site, as plans change.

When should I skip both Paddle and Stripe?⌄

Skip Paddle if you want a lower per-transaction rate as a merchant of record. Polar’s paid plans start at 3.8% + 40¢. Skip Stripe if you want a merchant of record from day one at one flat rate. Paddle and Polar charge 5% + 50¢ with tax included.

Sources · tool facts checked November 2026