How to Build an App Like Eventbrite (Event Management)

The math is simple. Eventbrite's fee structure is 3.5% plus $1.59 per ticket on the Flex plan. Sell 500 tickets at $200 and you pay $3,500 (3.5%) plus $795 (500 x $1.59), totaling $4,295 in platform fees for a single event. That number is before payment processing fees on top.

Six categories of organizations build their own ticketing platforms. Venue operators running recurring events, conference organizers with five or more events per year, sports leagues and associations, corporate event teams managing internal and external events, nonprofits running galas and fundraisers, and university systems managing campus events across departments. What they share: enough volume that Eventbrite's fees become a significant line item, and enough brand investment that putting a competitor's name on their ticket flow is not acceptable.

What you are building

An event management platform has four distinct surfaces. The organizer backend, where events are created and managed. The public attendee frontend, where tickets are discovered and purchased. The check-in interface, which is a mobile app used on the day of the event. And the post-event reporting layer, where sales and attendance data is reviewed.

Event creation

The event creation form is straightforward. Name, description, date and time, location (or virtual), and a banner image. The complexity lives in the ticket type configuration.

A single event can have multiple ticket types: General Admission at $50, VIP at $150, Early Bird at $35 (sold until two weeks before the event), and a Group Discount at $40 per person for purchases of five or more. Each ticket type has its own capacity, price, sales start and end dates, and a description.

Early Bird tickets are a specific pattern: they are the same event, but the sales period closes before the event does. The availability rule is time-based, not inventory-based. When the Early Bird window closes, those tickets disappear from the checkout and General Admission takes over. This requires a sales_start and sales_end timestamp on each ticket type, checked at checkout time.

Waitlists activate when a ticket type sells out. The attendee enters their email, and the system queues them. If a ticket is released through cancellation, the next person on the waitlist receives an email with a time-limited link to purchase. The time limit matters: if the waitlisted person does not purchase within 24 hours, the ticket goes to the next person in queue.

Recurring events cover the "weekly running club" use case. The organizer creates a series, defines the recurrence rule (weekly every Saturday at 8am), and the system creates individual event instances. Attendees can register for a single instance or the entire series. The data model must distinguish between the series record and the instance records, since an individual cancellation should not cancel the entire series.

Attendee checkout

The checkout flow handles the financial transaction and the ticket issuance. Both must succeed or neither should.

The flow: attendee selects ticket types and quantities, fills in required attendee fields (name, email, and any custom fields like dietary restrictions or T-shirt size), applies a promo code if they have one, and completes payment through Stripe.

Promo codes are stored in a promotions table with a code string, discount type (percentage or flat amount), usage limit, expiry date, and optionally a list of ticket types it applies to. At checkout, validate the code before presenting the discounted price to the attendee. Stripe's Coupon API can manage discounts on the payment side, or you can calculate the discount in your backend and pass the final amount to Stripe.

Stripe handles the payment. Use Stripe's Payment Intents API rather than the older Charges API. Payment Intents handles 3D Secure authentication automatically, which is required for many European cards under PSD2 regulation. It also provides a cleaner flow for handling payment failures and retries.

Stripe's webhook events confirm successful payment. Do not issue tickets until you receive the payment_intent.succeeded webhook. Issuing tickets on a client-side payment confirmation is a security risk; a determined attacker can forge it.

After confirmed payment, generate a unique QR code per ticket and send the order confirmation email with a PDF attachment. The PDF includes event details, all purchased tickets with their QR codes, and the attendee's order reference number.

QR code tickets

Each ticket record has a unique identifier, generated at creation time using a cryptographically random string (not a sequential integer, which would be guessable). The QR code encodes this identifier as a URL pointing to your check-in validation endpoint.

QR code generation uses a library like the qrcode npm package server-side. Generate the QR code as a PNG, store it in S3, and reference the S3 URL in the ticket record. Include the QR image in the PDF ticket and the confirmation email.

The check-in app scans the QR code, extracts the ticket identifier from the URL, and calls your check-in API with that identifier. The API checks three things: does this ticket ID exist, is it for today's event, and has it already been scanned? If all three pass, the API marks the ticket as checked in (storing checked_in_at timestamp and the scanner's device ID) and returns a success response. The app shows a green confirmation.

If the ticket has already been scanned, the API returns an error with the original checked_in_at timestamp and the device that first scanned it. The app shows a red warning with the timestamp. Staff can see immediately whether the duplicate scan is a technical glitch (same device, seconds apart) or a potential fraud attempt (different device, hours later).

Offline-capable check-in

Event venues have unreliable WiFi. A check-in app that requires a live API connection will publicly fail during a large event. Offline capability is not optional.

The implementation works in two modes. When online, every scan hits the API in real time and the app stays in sync with the server. When offline, the app operates from a locally cached dataset.

Before the event, the check-in app downloads all valid ticket IDs for that event and stores them in a local SQLite database on the device. When offline, a scan checks against this local dataset. The app records check-in events locally with a timestamp and the scanner's device ID. When connectivity returns, the app syncs all offline check-in events to the server.

The conflict case: two devices both scan the same ticket while offline, and both record it as a successful check-in locally. When both devices sync, the server receives two check-in events for the same ticket. The server resolves this by keeping the earlier timestamp as the canonical check-in and flagging the duplicate for review. This is a manageable edge case, not a critical failure.

Capacity enforcement during offline mode is approximate. If a ticket type sells out while a device is offline, that device cannot know. This is an acceptable limitation documented to event staff. For high-stakes capacity enforcement (fire code compliance, for example), require a designated connected device at each entrance and treat offline devices as backup only.

Organizer dashboard

The dashboard covers four operational needs.

Sales overview: total tickets sold and remaining by ticket type, revenue by day (useful for tracking the impact of promotional pushes), and a running total against target capacity. The day-by-day revenue chart is the most-used view in organizer dashboards; build it first.

Attendee list: filterable by ticket type, searchable by name or email, exportable to CSV. The CSV export is used for name badges, dietary requirement summaries, and post-event email lists. Column selection for the export (which custom field answers to include) makes this genuinely useful rather than just technically present.

Refund management: find an order by email or order reference, view what was purchased, and issue a full or partial refund. Stripe handles the actual refund; your interface needs to call the Stripe refunds API and update your ticket records to mark refunded tickets as invalid for check-in.

Check-in progress: how many attendees have arrived versus how many are registered, broken down by ticket type. Live-updating on event day. This view runs on the organizer's laptop while staff run the check-in app at the door.

Event discovery and SEO

Public event listings need to rank in Google Search. Someone searching for "tech conferences in Austin October" should find your platform's events.

Each event gets a dedicated URL with the event slug, for example /events/austin-tech-summit-2026. The page includes the event title in the H1, full description, date, location, and ticket prices. Add Google's Event schema markup using JSON-LD.

The Event schema tells Google this page describes an event, not just text about an event. Google can then display it as a rich result in search, showing the event date, location, and ticket availability directly in the search results. This increases click-through rate meaningfully for events with upcoming dates.

{
  "@context": "https://schema.org",
  "@type": "Event",
  "name": "Austin Tech Summit 2026",
  "startDate": "2026-10-15T09:00:00-05:00",
  "endDate": "2026-10-15T18:00:00-05:00",
  "location": {
    "@type": "Place",
    "name": "Austin Convention Center",
    "address": {
      "@type": "PostalAddress",
      "streetAddress": "500 E Cesar Chavez St",
      "addressLocality": "Austin",
      "addressRegion": "TX"
    }
  },
  "offers": {
    "@type": "Offer",
    "price": "200",
    "priceCurrency": "USD",
    "availability": "https://schema.org/InStock"
  }
}

The discovery index page supports filtering by category, location, and date range. Categories are organizer-defined tags (Conference, Workshop, Networking, Fundraiser). Location search can be city-based using a simple text filter or geography-based using PostGIS for radius searches. Date range filtering requires efficient indexing on the event start date.

Virtual events

Virtual events add one element to the standard flow: a Zoom or Teams meeting link delivered to registered attendees.

Create the virtual meeting room when the event is published, using the Zoom API or Microsoft Teams API with organizer OAuth credentials. Store the join URL against the event record. Include it in the order confirmation email, in a "Join Event" button on the attendee dashboard, and in a reminder email 30 minutes before the event starts.

Post-event access to recordings is a separate feature. When the event ends and the recording is ready, Zoom sends a webhook. Your system receives the webhook, fetches the recording URL from the Zoom API, stores it against the event, and emails registered attendees with a time-limited access link.

Tech stack

Backend: Node.js. Handles payment webhooks from Stripe, ticket generation, email sending, check-in API, and all database operations.

Database: PostgreSQL. The core tables are events, ticket_types, orders, tickets, attendees, and check_ins. The check_ins table is append-only: every scan creates a new record. This gives you a complete audit log of all check-in activity.

File storage: AWS S3 for event banner images and generated ticket PDFs.

Payments: Stripe Payment Intents. Stripe Connect is available if organizers need funds routed directly to their bank accounts.

Email: SendGrid for transactional email. Template the order confirmation, reminder, and refund notification emails. The order confirmation includes the PDF ticket as an attachment, which SendGrid supports via base64-encoded attachments in the API payload.

QR codes: qrcode npm package server-side. Generate PNG, store in S3, reference URL in ticket record and PDF.

Frontend: React for the attendee-facing web app and organizer dashboard.

Check-in app: React Native with offline-first SQLite storage. One codebase deploys to both iOS and Android, which matters because event staff use whatever devices they have.

Timeline and cost

The core platform takes 10-14 weeks: event creation, multi-ticket checkout with Stripe, QR ticket generation, email delivery, organizer dashboard, public event listing with Event schema, and the React Native check-in app.

The wide range in the timeline accounts for complexity in the check-in app. A web-based check-in interface (no native app) is significantly faster to ship. If staff will exclusively use tablets or laptops with good WiFi at the venue, a web-based check-in flow saves 3-4 weeks. Most organizers eventually want a native app for the offline capability, but it is a reasonable phase-two addition.

Adding recurring event series, virtual event delivery with Zoom integration, and Stripe Connect for multi-organizer payout routing adds 3-5 weeks.

The cost range is $100,000 to $160,000. The lower end covers a single-organizer platform with web check-in and no virtual event support. The upper end includes the native check-in app, virtual event delivery, recurring series, and multi-organizer payouts via Stripe Connect.

The right moment to build is when three conditions are true: you run enough events that the fee savings justify the build cost within two to three years, you need your own brand on the ticketing experience, and you need attendee data you can actually use (not locked in Eventbrite's system).

If you are evaluating an event platform build and want a scoped estimate for your specific requirements, talk to our team. We will scope the work in two weeks and give you a milestone plan before any code is written.