Free trial
A 7 day free trial starts from the onboarding page for the monthly plan, and can be cancelled at any time. A free demo editor is also available without an account.
Learn moreBigDevSoon
Frontend practice platform where real projects replace tutorial videos
Beginner
What is BigDevSoon?
BigDevSoon is a courses tool. A browser based frontend learning platform built around 21+ Figma backed projects, 100 daily challenges and 40+ practice problems, with a live editor and Merlin AI slash commands for generating, reviewing, explaining and roasting code.
BigDevSoon is a browser based learning platform for frontend developers who want to stop watching tutorials and start shipping code. The core of the product is a library of 21 or more real world projects, each delivered with a Figma design and broken into logical tasks. Alongside the projects sit 100 daily challenges for recreating designs in CSS and JavaScript, plus more than 40 practice problems with test cases. Everything runs in an online editor with a split pane, live preview, console, test runner, and support for Vanilla, React, Vue and TypeScript, with NPM packages installed through the esm.sh CDN and four CSS modes available. The editor is paired with Merlin AI, credited as powered by Claude, which responds to five slash commands: generate code from a prompt, produce a structured code review, explain concepts without spoiling the answer, deliver a full solution with explanation, and give design, UX and accessibility feedback. A roast mode returns humorous critique. This is where BigDevSoon draws its line in the sand: rather than hiding AI, it teaches developers how to prompt, review and own generated code, addressing the problem of shipping code nobody can read. The audience is frontend learners and early career developers, from juniors working through the first design recreation to more senior engineers exploring a new framework or component library. Beyond practice, the platform bundles career tooling: an ATS oriented CV builder with AI content suggestions, an interview simulator and remote job boards, the last two marked as coming soon. Prototypes for full page apps and shareable code frames round out the build side. Set against tutorial sites and challenge playgrounds like Frontend Mentor, BigDevSoon leans harder on AI assistance and career support inside a single account. Pricing is a monthly plan or a one time lifetime purchase, both gated behind a 7 day trial, and the public demo editor works without signing up.
How do you use BigDevSoon?
1Try the editor without an account
Open the public React Counter demo to see the split pane, live preview, console and test runner before committing to anything. The same demo also links to Vue, TypeScript, CSS animation and vanilla landing examples.
2Create your account
Sign in with GitHub through the onboarding flow to get a dashboard, a plan and 5 BigTokens per month if you start the trial. The trial runs for 7 days and can be cancelled at any time.
3Pick a project and open its Figma design
Browse the project library and choose a build that matches your level, then work through the task breakdown against the supplied design. Projects range from business cards and profile cards up to dashboards and e-commerce apps.
4Code in the editor with Merlin AI
Write your solution in React, Vue, TypeScript or vanilla JS while the preview updates live. Reach for slash commands when stuck: use explain to avoid spoilers, review for structured critique, or feedback for design and accessibility notes.
5Add daily challenges and practice problems
Recreate a single design in the daily challenge to sharpen CSS and JS, then solve test-backed practice problems to build problem solving stamina. Both sit alongside projects in the same dashboard.6Share your solution and build a CV
Publish finished work to the solutions gallery to compare approaches and gather ratings, then use the CV builder to turn the portfolio into an ATS friendly developer resume.
Pros and cons
Pros
- Projects ship with Figma designs and are split into logical tasks, so large builds feel finishableAI
- Merlin AI covers generation, review, explanation, solution and feedback, which suits different moments of learningAI
- Editor supports Vanilla, React, Vue and TypeScript with live preview, console, test runner and NPM packagesAI
- A free demo editor opens without an account, so the tooling can be judged before payingAI
- Career features (CV builder, interview simulator, job boards) extend the platform past pure practiceAI
Cons
- Project, challenge and problem counts are modest, so a fast learner may exhaust the catalogAI
- Interview simulator, remote job boards, learning paths and portfolio builder are still marked coming soonAI
- No formal lessons or video curriculum, which leaves beginners without structured explanationsAI
- AI credits are metered in BigTokens and AI CV review or roasts consume the monthly allowanceAI
- Lifetime access at $299 is a large upfront cost for learners still deciding whether the format suits themAI
How much does BigDevSoon cost?
Pricing
Monthly plan at $8 per month including 5 BigTokens, and a one time lifetime option at $299. BigTokens are consumed by actions: one token covers a prototype, 50K AI tokens, 5 MB storage or an AI CV review, while three tokens cover generating or importing a CV or a roast. Tokens recharge monthly, and a promotion code offers 50% off plans.
Learn moreIntegrations
Projects are delivered with Figma designs and code runs with NPM packages installed through the esm.sh CDN. Sign in is handled through GitHub. No other integrations are described on the homepage.
Features
21+ projects with Figma designs, 100 daily challenges and 40+ practice problems with test cases, all inside a browser editor with split pane, live preview, console, test runner, four frameworks and NPM packages. Merlin AI adds five slash commands for generation, review, explanation, solutions and design feedback, alongside prototypes, shareable code frames, a CV builder and a roast tool.
Learn moreFrequently asked questions about BigDevSoon
How much does BigDevSoon cost?
Monthly plan at $8 per month including 5 BigTokens, and a one time lifetime option at $299. BigTokens are consumed by actions: one token covers a prototype, 50K AI tokens, 5 MB storage or an AI CV review, while three tokens cover generating or importing a CV or a roast. Tokens recharge monthly, and a promotion code offers 50% off plans.Does BigDevSoon offer a free trial?
A 7 day free trial starts from the onboarding page for the monthly plan, and can be cancelled at any time. A free demo editor is also available without an account.How do you use BigDevSoon?
The walkthrough on this page covers 6 steps: 1. Try the editor without an account 2. Create your account 3. Pick a project and open its Figma design 4. Code in the editor with Merlin AI 5. Add daily challenges and practice problems 6. Share your solution and build a CV.What platforms does BigDevSoon support?
BigDevSoon is available on Web App.What does BigDevSoon integrate with?
Projects are delivered with Figma designs and code runs with NPM packages installed through the esm.sh CDN. Sign in is handled through GitHub. No other integrations are described on the homepage.What are the limitations of BigDevSoon?
Project, challenge and problem counts are modest, so a fast learner may exhaust the catalog. Interview simulator, remote job boards, learning paths and portfolio builder are still marked coming soon. No formal lessons or video curriculum, which leaves beginners without structured explanations.
