Side by side
AlgoExpert vs SQLZoo
Both stand on coding challenge platforms. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Paid Web
AlgoExpert combines coding questions, explanations, timed assessments, and shared mock interviews for interview preparation. Review the plan details and sign-in requirement before choosing All Access.
Visit AlgoExpert Free plan Web
Choose SQLZoo for free, browser-based SQL practice supported by tutorials, reference pages and sample databases. Learners seeking to experiment with a real SQL engine should follow the maintainer’s recommendation to install one locally.
Visit SQLZooThe facts
| AlgoExpert | SQLZoo | |
|---|---|---|
| Free plan | Not published | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Web |
| Lowest paid plan | All Access: $119 a year | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | algoexpert.io | sqlzoo.net |
| On coding challenge platforms | #25 of 30 | #21 of 30 |
AlgoExpert: what it does well
- Questions span 15 categories and four difficulty levels
- Written solutions cover nine programming languages
- Workspace runs solutions against test cases
- Includes timed assessments and shared mock interviews
What to know first
- All Access is listed at $119 a year
- Login uses the account active at purchase from four listed providers
SQLZoo: what it does well
- Interactive exercises provide immediate feedback on attempts.
- Tutorials cover queries, joins, functions, window functions and database creation.
- Reference pages cover data changes, dates, users and metadata.
- Assessments contain 15 questions across three difficulty levels.
- Available free on the web.
What to know first
- The maintainer recommends a local engine for experimenting with the real thing.
- Cookies and local storage retain interactions and user history.
Alternatives to AlgoExpert Alternatives to SQLZoo The whole list