The World’s First Progressive Event App — Built for Real Organisers

The Progressive Event App (PEA©) isn’t just faster — it’s smarter. While traditional event apps take weeks to launch and rarely get used, the PEA is up and running in just one day. You send us your agenda and assets, and we handle the rest — delivering a fully branded event app that launches instantly, in the browser, on any device.

It works seamlessly across iOS, Android, Windows, and macOS — with no downloads, no logins, and no compatibility drama. Unlike bulky native apps that break under venue Wi-Fi or require last-minute updates, the PEA is offline-ready, thanks to cache-first content loading that keeps key info (like schedules and speaker bios) available at all times.

At under 10MB in size, the PEA is incredibly lightweight — designed for real-world conditions where hotel conference Wi-Fi can barely load a webpage. And because it’s fully branded, your event identity stays front and centre — no third-party logos, no app store branding, just your logo, your colours, and your audience.

Best of all? There’s no app store politics. No developer accounts. No approval queues. No chance of being rejected last minute for a permissions issue you can’t fix. The PEA is already live the moment you share the link. That’s the kind of control organisers deserve.

The PEA© is built on Progressive Web App (PWA) architecture — but unlike generic web apps, we’ve optimised every layer specifically for in-person business events. If you're interested in the techincalities, this is it, if not, skip to the next section.

• ✅ Service Workers power offline-first performance and background sync, keeping your event functional even with patchy internet.
• ✅ The Web App Manifest enables branded splash screens and optional homescreen install for attendees who want quick access.
• ✅ Cache API and IndexedDB store critical content locally, ensuring schedules, bios, and directory info load instantly — even offline.
• ✅ Server-Side Rendering (SSR) gives your event pages lightning-fast load times and SEO benefits, so your agenda and speaker lineup can rank in search engines.
• ✅ Our modular content loader dynamically renders data from your setup — meaning no rebuilds, no code, just updated info on demand.dynamically renders data from your setup — meaning no rebuilds, no code, just updated info on demand.
• ✅ And with full HTTPS delivery, every session is encrypted and secure — ready for GDPR and enterprise-level compliance.

That's it! That's how it works. This isn’t just a PWA slapped together from a template — it’s a full-stack platform tailored for real-world events, built from the ground up to solve the exact problems organisers face.

Presso didn’t start as an app company. We started with a frustration: why were so many brilliant organisers stuck with tech that barely worked, cost a fortune, and still needed duct tape to function?

We didn’t want to tweak the broken model — we wanted to replace it.

So we coined the term Progressive Event App (PEA©) to describe what the industry was missing: a browser-first, event-specific app that just works. No app store. No logins. No install screens. Just a powerful, branded tool that launches instantly — and gets used.

When other apps flop because attendees don’t install them, the PEA works straight from the link. When Wi-Fi crashes mid-event, the PEA keeps loading. Need to change a room name or swap a speaker on the fly? Do it in minutes — attendees will see the update instantly.

And those glossy printed brochures no one reads? You can skip them entirely.

The PEA© setup is shockingly simple:

That’s it. No app stores. No downloads. No login hurdles. Just real-time access to your event — wherever they are, on whatever device they’re using.

🌱 The PEA is Sustainable by Default

Every time you skip the app store, you're not just saving time — you’re cutting your footprint.

The PEA replaces printed agendas, paper-heavy guides, on-site signage, and bloated apps that chew up bandwidth and battery life. It's the eco-friendly, digital-first alternative that not only improves UX but also aligns with your sustainability goals.

And because 10% of our revenue goes to fund real climate action — from tree planting to carbon removal — every event you run with a PEA© contributes to a healthier planet.

So yes, your event will look better. Run smoother. Cost less. And it’ll leave a smaller footprint while it’s at it.

🧩 What’s Included in Every PEA©

The Progressive Event App (PEA©) doesn’t nickel-and-dime you for the basics. Every app comes fully loaded — ready to deliver the kind of event experience your guests expect (and your sponsors will actually thank you for).

You get a full agenda and session schedule, beautifully formatted and accessible offline. Each speaker profile comes complete with bios, photos, and session links, while venue maps and room details help attendees navigate without confusion.

Need to share last-minute changes or announcements? Easy. The PEA supports real-time updates, pushed live from your browser dashboard — no installs, no delays.

It also includes an attendee directory with opt-in networking features, and optional tools for live Q&A, polls, and feedback, giving your audience a voice while keeping sessions engaging and interactive.

Sponsors get space to shine, too — with custom banners, trackable links, and dedicated sections that keep their brand front and centre.

There’s check-in-ready QR codes, an optional branded homescreen install, and full GDPR compliance baked in — no extra setup, no extra cost.

Everything you need to deliver a seamless, professional event — all in one link.

The Progressive Event App isn’t an add-on. It’s not a side feature, a download link, or a checkbox.

It’s the foundation of smarter, faster, frictionless events — and it’s changing how organisers deliver experiences that actually work.

No more download rates that flatline. No more bloated tech stacks duct-taped together.

Just one clean, browser-based link that’s live in minutes — branded, powerful, and ready to drive real engagement.

Presso built the first PEA©. Others will copy. But you? You’ll be ahead of the curve.