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.

AppsFlyer vs Firebase Analytics: Which is Better in 2026?

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Analytics

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

AppsFlyer is for: Mobile app marketers who need to attribute installs and in-app actions to paid campaigns.

Firebase Analytics is for: Mobile app teams on Firebase who want free in-app analytics linked to the rest of the Firebase project.

Quick verdict

There’s no single winner; pick on your constraint. Choose AppsFlyer if you run paid campaigns for a mobile app and need to know which ones drive installs. Choose Firebase Analytics if your app already uses Firebase.

AppsFlyer vs Firebase Analytics — Side by Side

	AppsFlyer	Firebase Analytics
Category	Analytics	Analytics
What it is	Mobile attribution platform	App analytics in Firebase
What it measures	Installs and conversions by campaign	In-app events and engagement
Self-hosting	No (hosted)	No (hosted by Google)
How you pay	Per conversion ($0.07 on Growth)	No cost on Spark and Blaze plans
Free access	12,000 conversions in the first year	Full product
Pricing	Free · then usage-based	Free
Starting price	Free tier available	Free tier available
Free tier
Best for	Analytics — mobile attribution, paid campaigns, ROAS	Analytics — mobile apps, Firebase, free

Pros & Cons

AppsFlyer

Free Zero plan: 12,000 conversions in the first year
Pay-as-you-go Growth at $0.07 per conversion
Organic installs are not counted

Zero plan excludes apps with paid activities
Fraud protection is on Enterprise
Measures attribution, not product funnels

Firebase Analytics

No cost on Spark and Blaze plans
Linked to other Firebase products in the project
SDKs for iOS and Android

Built for apps rather than website-only analytics
Hosted by Google only; no self-hosting

Key Features Compared

AppsFlyer

Zero (free): 12,000 free conversions in the first year; not for apps with paid activities
Growth: pay-as-you-go at $0.07 per conversion after the 12,000 free
Growth adds basic mobile attribution for paid campaigns
Enterprise: custom pricing with cross-channel attribution, ROAS optimization and fraud protection
Organic installs and actions are not counted and are free

Firebase Analytics

Analytics is a no-cost product on both the Spark (free) and Blaze (pay-as-you-go) plans
Listed alongside other no-cost Firebase products such as A/B Testing and App Distribution
No-cost usage quotas apply at the project level

Choose AppsFlyer if…

You run paid campaigns for a mobile app and need to know which ones drive installs.
You want to start pay-as-you-go rather than sign an annual contract.
You need mobile fraud detection on an enterprise plan.

AppsFlyer review & pricing

Choose Firebase Analytics if…

Your app already uses Firebase.
You want free in-app event analytics for iOS and Android.
You want analytics linked to other Firebase products in the same project.

Firebase Analytics review & pricing

Frequently Asked Questions

Is AppsFlyer better than Firebase Analytics?⌄

What is the difference between AppsFlyer and Firebase Analytics?⌄

What it is — AppsFlyer: Mobile attribution platform. Firebase Analytics: App analytics in Firebase. What it measures — AppsFlyer: Installs and conversions by campaign. Firebase Analytics: In-app events and engagement. Self-hosting — AppsFlyer: No (hosted). Firebase Analytics: No (hosted by Google). How you pay — AppsFlyer: Per conversion ($0.07 on Growth). Firebase Analytics: No cost on Spark and Blaze plans. Free access — AppsFlyer: 12,000 conversions in the first year. Firebase Analytics: Full product.

AppsFlyer vs Firebase Analytics: which is cheaper?⌄

AppsFlyer pricing: Free · then usage-based. Firebase Analytics pricing: Free. Confirm current pricing on each tool's official site, as plans change.

When should I skip both AppsFlyer and Firebase Analytics?⌄

Skip AppsFlyer if you only need in-app usage analytics. Firebase Analytics is free. Skip Firebase Analytics if you need attribution for paid install campaigns. AppsFlyer measures those.

Sources · tool facts checked November 2026