SQLint

Freemium

Free SQL practice workspace: 95+ questions, puzzles, case studies and browser-based mini tools

Generous Free Tierfrom ₹199/mo

Free plan checked against SQLint's pricing page on 8 September 2026. Re-checked monthly.

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About SQLint

SQLint (SqlInt) is a SQL practice and interview-prep workspace. The homepage states the product is free to start, with Pro plans available from 199 rupees a month for premium content. The free tier includes 95+ interview-style practice questions, a browser-based SQL playground with no sign-up required, 16 story-driven SQL puzzles, 20 real-world case studies with schemas and solutions, and a 27-topic learn-SQL roadmap. It also ships a set of 12 mini tools such as a SQL formatter, CSV-to-SQL and JSON-to-SQL converters, a UUID generator, a timestamp converter and a JOIN visualizer, all usable directly in the browser without an account. Paid packs unlock additional challenges and premium content.

Key Features

Interview-style SQL practice questions

In-browser SQL playground

Story-driven SQL puzzles

Real-world case studies

SQL learning roadmap

Browser-based SQL mini tools

Pros & Cons

Core practice content and mini tools are free with no account required

Wide range of formats: questions, puzzles, case studies, roadmap

Low-cost Pro tier for anyone who wants more

Some advanced challenges are gated behind a paid plan

Case studies and roadmap depth can't be judged without deeper use

The free plan in practice

What you can actually do on SQLint's free plan (95+ questions, 16 puzzles, 20 case studies, 12 mini tools, no sign-up required for playground), where it stops, and when it's worth paying.

What you can do free

95+ SQL interview practice questions
SQL playground in the browser, no sign-up required
16 story-driven SQL puzzles
20 real-world case studies with schemas and solutions
27-topic learn-SQL roadmap
12 free browser-based mini tools (formatter, CSV/JSON to SQL, UUID generator, timestamp converter, JOIN visualizer)

Where it stops

Advanced challenges require a paid Pro plan
Progress tracking requires creating a free account

When to upgrade to a paid plan

Stay on the free plan while you're comfortably under the free plan's limit (95+ questions, 16 puzzles, 20 case studies, 12 mini tools, no sign-up required for playground). It's worth moving to a paid plan once you consistently bump into that ceiling, need to remove branding, or want features the free tier holds back. Paid plans start at ₹199/mo.

What's the free tier actually like?

Used SQLint's free plan? Tell people what it was really like — what you hit, what surprised you, whether the limits held. No account needed.

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