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.

Agent Auth & Tool CallingFree tier

Arcade: Pricing, Features & Alternatives

Arcade.dev runs the tools an agent calls and handles user sign-in for each one, so the agent acts as the authenticated user rather than a shared service account. Every call is limited to what both the user and the agent are allowed to do, and pre- and post-call hooks let you block actions or redact data without forking the runtime. Arcade says its team wrote the MCP tool authorization specification. Custom tools are built with its open-source Python or JavaScript framework (arcade-mcp, MIT). It states SOC 2 compliance, and Enterprise can run in your VPC or fully air-gapped. Free includes 2,000 authorization events and 2,000 tool calls a month; Team is $25/month plus $0.10 per authorization event and $0.01 per tool call; Enterprise is an annual bundle.

Arcade Pricing Plans (2026)

Plan	Price	Highlights
Free	$0	2,000 auth events / month · 2,000 tool calls / month · Arcade Cloud
TeamPopular	$25 / month + usage	$0.10 per authorization event · $0.01 per tool call · Next-business-day support
Enterprise	Custom	VPC or air-gapped deployment · SSO, RBAC, audit logs · Private tool registry

Pricing summary: Free · paid from $25/mo. Always confirm current pricing on the official site.

Key Arcade Features

$0.10 per authorization event
$0.01 per tool call
Next-business-day support

Pros

+Per-call authorization scoped to user and agent
+Policy hooks to block or redact without forking
+Self-host in your VPC or air-gapped on Enterprise

Cons

−Small free tier (2,000 tool calls)
−Per-call fees add up for chatty agents
−Self-hosting is Enterprise-only

Best Arcade Alternatives

Compare all

Composio

Free · paid from $29/mo

Nango

Free · paid from $50/mo

ACI.dev

Free · then usage-based

Arcade Compared

Arcade vs Composio Arcade vs Nango Arcade vs ACI.dev

In-depth guideComposio vs Arcade (2026): Agent Auth & Tool Calling, Plus Open-Source Nango and ACI.devYour agent has to act inside Gmail, Slack and Salesforce as each of your users, without the model seeing a token. Composio and Arcade compared with Nango and ACI.dev on OAuth handling, licence and cost at 50 and 1,000 users.

Arcade FAQ

What is Arcade used for?⌄

Arcade is a agent auth & tool calling tool. MCP runtime that lets agents act as the signed-in user, with per-call authorization, policy hooks and 8,000+ permission-aware tools.

Is Arcade free?⌄

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

How much does Arcade cost?⌄

Arcade offers a free tier, with paid plans starting at $25/month. Some plans are usage-based (pay-as-you-go).

What are the best Arcade alternatives?⌄

Popular Arcade alternatives include Composio, Nango, ACI.dev. Compare pricing and features on our Arcade alternatives page.