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The operating system for weddings and events.

That’s The One is a platform that brings every part of an event and wedding together – guest data, budgets, to-dos, logistics, and floor plans – so everything works seamlessly in one place.

The platform serves as both an information hub and a creative workspace, helping clients bring their vision to life. Despite the wedding industry being worth over $300 billion in the Western hemisphere, many events are still managed with fragmented, inefficient tools, creating friction and extra work for planners and hosts alike.

Project
That's The One
Role
Founding Product Designer
Type
B2B Saas
Work
Product Design, Brand Design

Designed for planners, clients and vendors.

Events are data problems that demand accuracy and speed, but today they’re often handled with fragmented tools and manual processes. That mismatch creates wasted time, errors, and stress for everyone involved. That’s The One sits at the intersection of reliable data and beautiful software: a single source of truth that’s accurate, auditable and simple to us

The professional planner

Tooling

Existing tools aren’t built for the specific workflows planners run every day.

Client management

Limited tooling for collaborative planning makes client communications and expectation-setting manual and brittle.

Data management

No centralised source of truth; guest lists, budgets, logistics and floor plans live in separate systems or spreadsheets.

The client

Involvement

Clients vary widely in how hands-on they want to be; current flows make it hard to set expectations and involve them in the right way.

Visibility

Clients want clear, timely visibility into progress and the chance to give input without adding friction.

*Not a focus of this case study

The vendor*

Visibility

Vendors often receive fragmented or late information - timelines, guest counts, layouts, and changes.

Payments

Invoices, deposits, and due dates are managed manually, with limited clarity on what’s been paid, what’s outstanding, and who’s responsible.

Change management

Last-minute changes are common, but most providers lack a single source of truth.

An operating system that does the heavy lifting.

The guest list is the center piece and was designed around the specific realities of event and wedding planning, multiple stakeholders, shifting details, and high data sensitivity. The result is a guest management system that’s deeply contextual, powerful, and still incredibly intuitive to use.

TTO helps planners to be more efficient and bring on higher-end clients.

The platform is designed to streamline admin and communications, improving productivity and creativity. TTO brings together, guest communications, productivity tooling, venue and supplier sourcing, and business tooling like accounting and invoicing.

Visual cues, like this star, help explain data flows. In this example, it shows that the field is auto-filled from the RSVP form.

I introduced ways to surface common event insights without requiring manual filtering. This improved the speed and accuracy the planning.

From floor plan tool to creative canvas

The floor plan was one of the more technical features we built. After launch, I noticed that planners were using it not just for floor and seating plans, but also as a broader creative canvas, collecting references, colour palettes, and imagery.

Patterns that emerged
Over time I noticed planners using this feature as flexible creative workspace, not just a floor plan tool. I leaned into this behaviour and improved a few features to enhance the stickiness.  

The floor plan also became the creative canvas for planners and their clients. I improved a few small things to lean into this new behaviour (image upload, aligning, commenting, drawing, etc.)

Additional, I improved commenting and 'notes' to encourage collaboration and engagement. The easier it is to add notes and comments, the higher the engagement - which was proven later on.

Learnings

For technical features like the floor plan canvas, close collaboration with engineering was essential (and I loved it). By working side by side, we were able to exchange notes, reduce complexity, and deliver a first version that tool felt both robust and effortless to use. When the engineer worked on testing the limits on the technical side, I flushed out the UX and explored interaction models.

Another key learning was knowing when a feature was “good enough” to ship versus when it needed to be more polished. Planners care deeply about how they show up to their clients, so the software they use reflects directly on their professionalism. This meant our releases couldn’t just be functional, they had to feel refined and client-ready. Prioritising both power and polish was essential for earning their trust and securing adoption.

Say 'Hello' for more

Contact me to learn more about my process, iterations, decision making and more.

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