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.

Newsletter & Lifecycle EmailFree tier

Loops: Pricing, Features & Alternatives

Loops is a modern email platform built for SaaS companies, combining transactional and marketing email with a clean API, visual editor, and strong deliverability. The free plan covers 1,000 subscribers and 4,000 sends; paid plans (from $49/mo) include unlimited transactional email.

Loops Pricing Plans (2026)

Plan	Price	Highlights
FreePopular	$0 (1,000 subscribers · 4,000 sends)	Transactional + marketing email · Clean API & visual editor · 1,000 subscribers free
Paid	From $49 / month	Unlimited transactional email · No footer branding · Higher subscriber limits

Pricing summary: Free · paid from $49/mo. Always confirm current pricing on the official site.

Key Loops Features

Transactional + marketing email
Clean API & visual editor
1,000 subscribers free
'Powered by Loops' footer

Pros

+Modern DX for SaaS email
+Transactional + marketing in one
+Great deliverability
+Generous free tier

Cons

−Paid tiers start at $49
−Younger than SendGrid/Mailgun

Best Loops Alternatives

Compare all

Customer.io

From $100/mo

Beehiiv

Free · paid from $43/mo

Kit (ConvertKit)

Free · paid from $33/mo

Ghost

Free · paid from $9/mo

MailerLite

From $10/mo

Loops Compared

Loops vs Beehiiv Loops vs Kit (ConvertKit)Loops vs Ghost Loops vs Customer.io Loops vs MailerLite

Loops FAQ

What is Loops used for?⌄

Loops is a newsletter & lifecycle email tool. Modern email platform for SaaS — transactional + marketing emails with a clean API and great deliverability.

Is Loops free?⌄

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

How much does Loops cost?⌄

Loops offers a free tier, with paid plans starting at $49/month.

What are the best Loops alternatives?⌄

Popular Loops alternatives include Customer.io, Beehiiv, Kit (ConvertKit), Ghost, MailerLite. Compare pricing and features on our Loops alternatives page.