Unbuilt is a market intelligence platform for vibe coders, indie hackers, and no-code founders. It has three tools: Pulse (free daily launch feed), Dig (market analysis scanning 70+ live sources), and Stack (build plan from 700+ tools).

How does Dig validate an app idea?

Dig scans 70+ live data sources including App Store, Google Play, Reddit, X, YouTube, and Product Hunt. It returns a competitor list, pain points, market gaps, SWOT analysis, and an opportunity score from 0 to 100. The process takes approximately 5 minutes.

Is Unbuilt free to use?

Pulse (the daily launch feed) is completely free with no account required. Dig (market analysis) and Stack (build plan) each cost 1 credit per report. Unbuilt also hosts 2,400+ free app idea analysis pages at unbuilt.me/ideas.

Vibecoding is building software using AI-powered tools like Cursor, Lovable, Bolt, Replit, and v0. It allows non-traditional developers to create apps quickly. Unbuilt helps vibe coders validate their ideas before building.

How many app ideas does Unbuilt analyze?

Unbuilt hosts over 2,400 pre-analyzed app idea pages covering 25+ categories including SaaS, AI tools, developer tools, productivity, finance, health, and education. Each page includes an opportunity score, competitor count, and market overview.

Is open source SavvyCal alternative worth building?

With an opportunity score of 62/100, this is a moderately competitive space with some opportunities. For a full analysis, use Dig at unbuilt.me to scan 70+ live sources.

AlternativesTools

Open source SavvyCal alternative

You're looking at a micro-niche within a micro-niche: open source calendar scheduling tools that compete with SavvyCal's slick UX. The market exists, but it's tight—most teams either stick with Google Calendar or pay for SavvyCal because the open source alternatives feel half-baked.

Opportunity Score

62/ 100

Moderate

Estimated Competitors

11apps

Low competition

Key insight: Open source scheduling tools fail not because they lack features, but because they're built by engineers for engineers—you win by building something your non-technical cofounder's mom would actually use without a tutorial.

Market Overview

There are roughly 8-15 legitimate open source scheduling tools in active development (Cal.com, Calendly clones, Doodle alternatives), but only 2-3 of them seriously challenge SavvyCal's specific positioning around intelligent availability and meeting prep. The pain points are real: teams want scheduling automation without vendor lock-in, but most open source options require significant self-hosting friction, lack mobile polish, or fail at the core job of making scheduling feel effortless. The gap isn't in features—it's in user experience and out-of-the-box reliability. SavvyCal wins because scheduling just works; open source alternatives win on philosophy and price. A founder shipping here should obsess over three things: (1) zero-friction setup for non-technical teams, (2) mobile-first design that doesn't feel janky, and (3) smart availability detection that actually saves time, not just moves the problem around. The real opportunity is serving teams that have already decided they want open source but are tired of rough edges.