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.

Session Replay & HeatmapsFree tier

Fullstory: Pricing, Features & Alternatives

Fullstory is at the top end of this category. It auto-captures every click, input and page change without manual tagging, so you can search and build funnels on questions you did not think to ask in advance, then jump into the exact replay. That depth is priced accordingly. Fullstory publishes no list prices. A free tier covers 30,000 sessions a month with one month of retention and up to 10 teammates. Buyer data puts entry Business contracts, at 50,000–100,000 sessions a month, in the $10,000–25,000 a year range.

Fullstory Pricing Plans (2026)

Plan	Price	Highlights
Free	$0	30,000 sessions / month · 1 month retention · Up to 10 teammates
BusinessPopular	Quote-based (entry contracts reported ~$10k–$25k / year)	Auto-capture, search and funnels · Session-volume pricing · Annual contract

Pricing summary: Free · paid plans by quote. Always confirm current pricing on the official site.

Key Fullstory Features

Auto-capture, search and funnels
Session-volume pricing
Annual contract

Pros

+Retroactive analysis: everything is captured, so no tagging plan is needed
+Strong search, funnels and frustration signals
+Enterprise-grade privacy controls

Cons

−No public pricing; annual contracts only
−Overkill for a marketing site that just wants heatmaps
−Costs scale with sessions

Best Fullstory Alternatives

Compare all

Microsoft Clarity

Free

Hotjar

Free · paid from $49/mo

Mouseflow

Free · paid from $25/mo

Fullstory Compared

Fullstory vs Microsoft Clarity Fullstory vs Hotjar Fullstory vs Mouseflow

Fullstory FAQ

What is Fullstory used for?⌄

Fullstory is a session replay & heatmaps tool. Enterprise digital experience analytics: pixel-accurate replay, auto-captured events and funnels. It is quote-based, with a free tier.

Is Fullstory free?⌄

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

How much does Fullstory cost?⌄

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

What are the best Fullstory alternatives?⌄

Popular Fullstory alternatives include Microsoft Clarity, Hotjar, Mouseflow. Compare pricing and features on our Fullstory alternatives page.