App Overview

SQLZoo - SQL Learn & Practice icon

SQLZoo - SQL Learn & Practice

小玲 王 · Developer Tools

The best way to learn SQL is to write it.

Free

PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
N/A
No ratings yet

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Your first Build Kit is free with a verified email.

What's included

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Quick prompt

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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

The best way to learn SQL is to write it. SQLZoo brings guided lessons, runnable exercises, quizzes, and a searchable reference together in one app. Start with SELECT, then work through JOINs, aggregates, subqueries, window functions, and table design at your own pace. Practice with real queries • Follow 18 tutorial chapters with 328 SQL exercises across lessons, assessments, and challenges. • Write queries in the editor, inspect practice data, run your SQL, and check the result. • Use hints and reference answers when you need a hand. • Test your understanding with nine topic quizzes, eight assessments, and two challenges. Build a lasting practice habit • Get a five-question daily plan with new, review, and stretch exercises. • Revisit questions based on your answers, mistakes, and hint use. • Track learning days, streaks, and badges, and share a progress card. Keep a reference close • Search SQL notes and examples whenever you need a refresher. • Optionally configure your own AI provider and ask about the exercise you are solving. When you send a message, the question, reference answer, hint, and your current SQL are sent to that provider. Your own API configuration is required. If you have any questions about the app, or requests for features you would like to see, just write a short review or use the button inside the app to contact me. Get more support on https://www.whalesgrowth.top SQLZoo Pro Subscriptions You can subscribe for SQLZoo Pro Subscriptions to all features and content offered for purchase within the app. SQLZoo Pro offers subscriptions. The subscription prices are: (i) Monthly Subscription ($2.99 / Month) (ii) Yearly Subscription ($12.99 / Year) Payment will be charged to iTunes Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. The prices are in US dollars. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Our app is functional without purchasing an Auto-Renewable subscription, and you can use all the unlocked content after the subscription expires. Q: How do I restore the subscriptions on new devices? A: You can tap the 'Restore' button on the subscription page. Privacy Policy: https://www.whalesgrowth.top/pp/ Terms of Service: https://www.whalesgrowth.top/tos/

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
BUILD KIT DIFFICULTY

Not assessed in a Build Kit yet.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.