How to Make an App Like Brilliant

Brilliant has become the gold standard for interactive learning apps. Instead of passive video lectures, it teaches math, science, computer science, and logic through short, hands-on problem-solving sessions. With millions of downloads and a loyal subscriber base, it proves that people will pay for learning — as long as it feels like play.

If you're planning to build an app like Brilliant, this guide walks you through the product thinking, feature set, tech stack, timeline, and costs involved.

What Makes Brilliant Work

Before writing a single line of code, it's worth understanding why Brilliant succeeded where thousands of other edtech apps stalled.

Active learning over passive consumption. Every lesson asks the user to do something — drag a shape, pick an answer, adjust a slider. Learning happens through discovery, not narration.

Bite-sized sessions. A lesson takes five to fifteen minutes. That fits into a commute, a lunch break, or the ten minutes before bed.

Visual, interactive explanations. Abstract concepts become manipulable diagrams. This is the hardest and most valuable part of the product.

Structured progression. Courses are organized into clear paths with prerequisites, so learners always know what's next.

Streaks and gentle gamification. Daily challenges, streaks, and progress rings drive habit formation without turning the app into a slot machine.

If your app doesn't nail interactivity and content quality, no amount of polish elsewhere will save it.

Step 1: Choose Your Niche

Competing head-on with Brilliant across all of STEM is a losing strategy for a new entrant. Narrow down instead:

• Subject depth: Only data science. Only financial literacy. Only chemistry.
• Audience: K-12 students, working professionals upskilling, university entrance exam candidates.
• Geography and language: Localized interactive learning for a specific region is a genuinely underserved market.
• Format twist: Voice-first learning, AR-based science labs, or peer-competitive learning.

A focused product lets you build deeper content faster and market to a specific person rather than "everyone who likes learning."

Step 2: Define Your Core Feature Set

Must-Have Features (MVP)

Onboarding and skill assessment A short diagnostic quiz that places users at the right difficulty level. This single feature dramatically improves retention because users neither get bored nor overwhelmed.

Interactive lesson player The heart of the app. It should support multiple question types: multiple choice, drag-and-drop, sliders, numeric input, sortable sequences, and interactive diagrams. Build this as a configurable engine, not as hardcoded screens.

Course and learning path structure Courses broken into units, units into lessons, lessons into problems. Support prerequisites and recommended sequencing.

Progress tracking Completion percentages, mastery indicators per topic, and a visual dashboard.

Streaks and daily goals A daily challenge, a streak counter, and configurable reminders.

Hints and step-by-step solutions When a learner gets stuck, they need a scaffolded explanation — not just "wrong, try again."

Offline mode Download lessons for commutes and flights. A meaningful differentiator in many markets.

Subscription and payments Free tier with limited daily lessons, paid tier for full access. Integrate in-app purchases plus web checkout to reduce platform fees.

Phase Two Features

• Adaptive difficulty driven by learner performance data
• AI tutor for conversational, contextual explanations
• Community discussion threads per problem
• Leaderboards and friend challenges
• Certificates and skill badges
• Teacher/parent dashboards for the education market
• Audio-only lessons for hands-free learning

Step 3: Design the Content Engine

This is where most teams underestimate the work. An app like Brilliant is really a content platform wearing an app costume.

You need:

A content schema. Define problem types, metadata (topic, difficulty, prerequisites, estimated time), and explanation structures in a consistent data model.

An authoring CMS. Your subject-matter experts should be able to create interactive problems without a developer. Invest here early — a good authoring tool is a 10x multiplier on content velocity.

A rendering layer. The app interprets content JSON and renders the appropriate interactive widget. Adding a new problem type should mean adding one widget, not rebuilding screens.

Math and diagram rendering. LaTeX support via KaTeX or MathJax, plus SVG-based interactive diagrams.

Versioning and review workflow. Content needs draft, review, and publish states, with the ability to A/B test different explanations.

Step 4: Pick Your Tech Stack

Frontend

Approach	Best For
Flutter	Fast cross-platform delivery with highly custom, animated interactive widgets
React Native	Teams with existing React/web expertise and shared web-mobile logic
Native (Swift / Kotlin)	Maximum performance for complex graphics, AR, or platform-specific features

For an interactive learning app, Flutter is often the sweet spot — its custom rendering engine handles animated, gesture-driven widgets beautifully across platforms.

Backend

• Runtime: Node.js with NestJS, or Python with FastAPI/Django
• Database: PostgreSQL for users, subscriptions, and progress; MongoDB or a document store for flexible content objects
• Cache: Redis for leaderboards, streaks, and session state
• Search: Elasticsearch or Algolia for course and topic discovery
• Storage/CDN: S3 plus CloudFront for media and downloadable lesson bundles

Supporting Services

• Auth: Firebase Auth, Auth0, or Cognito with social and email login
• Payments: Apple/Google IAP, plus Stripe for web subscriptions
• Analytics: Mixpanel or Amplitude for funnel and retention analysis
• Push: Firebase Cloud Messaging for streak reminders
• AI: An LLM API for hint generation, explanation rewriting, and conversational tutoring

Step 5: Design for Learning, Not Just Looks

UI/UX in edtech carries extra weight because confusion directly kills learning outcomes.

• One concept per screen. Resist the urge to cram.
• Immediate, specific feedback. Tell learners why an answer was wrong.
• Generous touch targets for drag-and-drop interactions on small screens.
• Motion with meaning. Animate transformations so learners see the concept change, not just decoration.
• Accessibility. Screen reader support, dynamic type, high contrast modes, and alternatives to color-only cues.
• Progress that feels earned. Visible mastery indicators beat vanity point totals.

Step 6: Build a Monetization Model That Works

Brilliant runs on subscriptions, and for good reason — it aligns revenue with ongoing engagement.

Freemium subscription. A few free lessons daily, full access behind a paywall. Annual plans at a meaningful discount to improve LTV and cash flow.

Tiered pricing. Individual, family, and team/enterprise plans.

Regional pricing. Essential for international growth. A single global price severely limits your addressable market.

B2B2C licensing. Schools, universities, and corporate L&D departments pay per seat and churn far less than consumers.

Lifetime access offers. Useful for early cash flow, but use sparingly.

Whatever you choose, place your paywall after the user experiences a genuine "aha" moment. Value first, payment second.

Step 7: Instrument Everything

Learning apps live and die by retention data. Track from day one:

• Lesson start, completion, and abandonment rates per problem
• Time-to-answer and error rates by problem (flags badly written content)
• Day 1 / Day 7 / Day 30 retention
• Streak length distribution
• Free-to-paid conversion by acquisition channel and onboarding path
• Subscription churn and reactivation

Problem-level analytics are your content quality feedback loop. If 80% of learners fail one problem, the problem is broken — not the learners.

Development Timeline and Cost

A realistic phased plan for a quality MVP:

Phase	Duration
Discovery, content strategy, and UX research	2–3 weeks
UI/UX design and design system	4–5 weeks
Backend, CMS, and content engine	6–9 weeks
Mobile app development	8–12 weeks
Initial content production	Runs in parallel, ongoing
QA, beta testing, and launch prep	3–4 weeks

Total: roughly four to six months for a strong MVP.

Cost ranges vary widely by team location and scope. A focused MVP with one or two courses typically lands in the $50,000–$90,000 range. A full-featured platform with adaptive learning, an AI tutor, web plus mobile clients, and a robust authoring CMS generally runs $120,000–$250,000+. Budget separately and generously for content creation — it's an ongoing operating cost, not a one-time build.

Common Mistakes to Avoid

Building screens instead of an engine. Hardcoding lessons means every new piece of content requires engineering. Build the configurable content engine first.

Underinvesting in content. A beautiful app with fifteen shallow lessons churns hard. Depth beats breadth.

Copying Brilliant's scope. They've spent a decade and enormous capital building their library. Start narrow and go deep.

Gamifying without teaching. Streaks and badges boost engagement but don't create learning. If users finish a course and can't apply the concept, the product failed.

Ignoring the web. Many learners prefer a larger screen for study sessions, and web checkout avoids app store commissions.

Skipping learning science. Spaced repetition, retrieval practice, and interleaving aren't buzzwords — they're evidence-backed mechanics that meaningfully improve outcomes.

Final Thoughts

Building an app like Brilliant is fundamentally two products in one: a polished interactive mobile experience and a high-quality content operation. The engineering is well-understood; the hard parts are pedagogy, content velocity, and retention.

Start with one narrow subject you can teach better than anyone else. Build a flexible content engine so your subject experts can move fast without developers. Instrument everything, and let real learner data tell you what to expand.

If you're ready to scope your interactive learning app, our team can help you move from concept to a launch-ready product — including the content architecture that makes it scalable.

Have a project in mind? Contact Sodio Technologies to discuss your requirements and explore the right technology solution for your business.