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.

Fly.io vs Oracle Cloud (OCI): Which is Better in 2026?

Name: App Stack Builder
Availability: InStock

Hosting

Choosing between Fly.io and Oracle Cloud (OCI)? Both are popular hosting tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.

Fly.io is for: Developers who want to run containers in many regions near their users and are comfortable working from a CLI.

Oracle Cloud (OCI) is for: Hobbyists and cost-sensitive developers who want small always-free VMs, and are willing to deal with account approval and capacity limits.

Quick verdict

There’s no single winner; pick on your constraint. Choose Fly.io if your users are spread across continents and latency matters. Choose Oracle Cloud (OCI) if you want a small server that costs nothing indefinitely.

Fly.io vs Oracle Cloud (OCI) — Side by Side

	Fly.io	Oracle Cloud (OCI)
Category	Hosting	Hosting
What it is	Global container platform	Hyperscale cloud provider
How you pay	Per second while machines run	Pay as you go, per service
Free access	$1 trial; invoices under $5 waived	Always Free VMs and trial credit
What it runs	Any Docker image; managed Postgres	VMs, containers, Kubernetes, Oracle databases
Who runs the servers	Managed hardware; you configure machines and regions	You configure and run it
Pricing	Usage-based	Free · then usage-based
Starting price	Pay-as-you-go	Free tier available
Free tier	—
Rating	4.7	4.0
Best for	Hosting — multi-region, Docker, low latency	Hosting — always-free VMs, Arm servers, hobby projects

Pros & Cons

Fly.io

True global, multi-region deployments
Excellent latency for global users
Transparent usage-based pricing
Strong Postgres and networking story
Developer-centric tooling

Steeper learning curve than Vercel/Render
No traditional UI-first workflow
Costs require monitoring at scale

Oracle Cloud (OCI)

Most generous free tier anywhere
Powerful ARM Ampere VMs at $0
10 TB egress included
Full enterprise cloud underneath

Notoriously strict account approval
Free ARM capacity often unavailable
Clunky console
Free Ampere limits cut in June 2026

Key Features Compared

Fly.io

Machines billed per second while running; the smallest is $2.19 a month in US East
17 regions, priced by a regional multiplier
Managed Postgres from $38 a month
Egress from $0.02 per GB in North America and Europe
$1 free trial with no card; invoices under $5 are waived
Paid support from $29 a month

Oracle Cloud (OCI)

Always Free tier with Arm (Ampere A1) and small AMD VMs
Always Free Arm allowance reduced in June 2026
Free trial credit for new accounts
Full enterprise cloud with pay-as-you-go pricing

Choose Fly.io if…

Your users are spread across continents and latency matters.
You want to run any Docker image, not just a supported runtime.
Your app is small, so a monthly bill under $5 is waived.

Fly.io review & pricing

Choose Oracle Cloud (OCI) if…

You want to start free — Oracle Cloud (OCI) has a free tier and Fly.io does not.
You want a small server that costs nothing indefinitely.
You run Arm-compatible software.

Oracle Cloud (OCI) review & pricing

Frequently Asked Questions

Is Fly.io better than Oracle Cloud (OCI)?⌄

What is the difference between Fly.io and Oracle Cloud (OCI)?⌄

What it is — Fly.io: Global container platform. Oracle Cloud (OCI): Hyperscale cloud provider. How you pay — Fly.io: Per second while machines run. Oracle Cloud (OCI): Pay as you go, per service. Free access — Fly.io: $1 trial; invoices under $5 waived. Oracle Cloud (OCI): Always Free VMs and trial credit. What it runs — Fly.io: Any Docker image; managed Postgres. Oracle Cloud (OCI): VMs, containers, Kubernetes, Oracle databases. Who runs the servers — Fly.io: Managed hardware; you configure machines and regions. Oracle Cloud (OCI): You configure and run it.

Fly.io vs Oracle Cloud (OCI): which is cheaper?⌄

Fly.io pricing: Usage-based. Oracle Cloud (OCI) pricing: Free · then usage-based. Confirm current pricing on each tool's official site, as plans change.

Which is rated higher, Fly.io or Oracle Cloud (OCI)?⌄

In our catalog, Fly.io rates 4.7 out of 5 and Oracle Cloud (OCI) rates 4.0 out of 5, so Fly.io has a slight edge on reviews.

When should I skip both Fly.io and Oracle Cloud (OCI)?⌄

Skip Fly.io if you prefer a dashboard to a CLI. Render and Railway are UI-first. Skip Oracle Cloud (OCI) if you need guaranteed capacity on a free plan. Free Arm capacity is often unavailable in busy regions.

Sources · tool facts checked November 2026