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Diogo Fernandes
All work

Flutter · 2024

Unified Limits — Making harm-reduction tools feel human

From a narrow regulatory update to a platform-wide behaviour change initiative, shipped across four brands.

Redesigned Deposit Limit screen with a gauge showing £45 deposited of a £50 limit

TL;DR

From a narrow technical update to a platform-wide behaviour change initiative — shipped across Sky Bet, Paddy Power, Betfair & PokerStars. Adopted by ~50% more users.

Role
Lead Product Designer
Company
Flutter
Brands
Sky Bet · Paddy Power · Betfair · PokerStars
Status
Shipped

Key results

Deposit limits set within the first week
+50%
Brands running the same system
4
Customers with reduced regulatory risk
30M+
01

Context

Flutter’s brands — Sky Bet, Paddy Power, Betfair and PokerStars — all offer Safer Gambling (SG) tools: features that help players maintain control and gamble responsibly.

  • The user: bettors seeking to manage their own gambling behaviour.
  • The problem: regulatory changes required restructuring the deposit limit tools.
02

Problem

The brief

  • Rename the deposit limit tools.
  • Adjust tool behaviour to meet the new regulations.
  • Keep the same UX flow to protect adoption rates.

What users revealed

Testing the existing experience told a bigger story. The tools were outdated, scary and confusing — “Safer Gambling” read as a warning for addicts, not a healthy default.

  • The tools didn’t feel related to each other.
  • SG tools felt scary and disconnected.
  • The visual language didn’t match the weight of the decision.
I know I could set some kind of limit. I just don’t know which one is the best for me, or how useful they are to me right now.
— Participant, user testing
03

Trade-offs

Staying narrow

  • Regulatory compliant and fast to ship.
  • But the tools would remain in a broken system — we’d have to revisit the bigger issue later.

Expanding scope

  • Higher short-term pressure: timeline, tech and stakeholder alignment.
  • Higher long-term return: a coherent system users understand and adopt voluntarily, not just forcibly.

The decision

I pushed to broaden the scope beyond deposit limits — a full overhaul, every tool, every case. The evidence made the argument for us.

I wasn’t proposing a bigger project. I proposed the right project.
04

Process

A collaborative process: designers, product and users were present at every validation cycle. Over 5+ rounds of user testing we validated concepts, iconography and hierarchy — no decision was made on assumption alone.

Understand

  • User journey mapping
  • Card sorting
  • Pain points
  • Customer interviews

Define

  • HMW statements
  • Business goals
  • Customer goals
  • Success measures

Ideate

  • Workshop
  • Crazy 8s
  • Voting session
  • Best ideas prioritised

Validate

  • Prototype
  • User testing
  • Customer feedback & key insights
Miro boards with customer journeys, HMW statements, goals, sketches, interview scripts and key insights
The Miro workspace: customer journeys, HMW statements, goals, Crazy 8s, interview scripts and key insights.
05

Key decisions

1. Data behaviour

The tools page was redesigned and the promotional banners removed. The data was clear: banner CTAs drew only around 3% of the clicks the main-page CTAs did.

Old Responsible gambling tools page with a banner carousel next to the redesigned Safer Gambling Tools list, with a chart comparing banner and main-page CTA clicks
Before → after, with the banner vs. main-page CTA click data that drove the change.

2. Mental models

How do you visually represent a deposit limit? We explored several directions. Users already had a mental model — from us, and from Revolut, Monzo and other fintech apps — so the gauge won.

Three explorations of the deposit limit screen: a circular ring, a progress bar, and the chosen semicircle gauge
Three directions tested. The semicircle gauge matched the model users already had.

3. Cognitive load

Removing clutter and enabling progressive disclosure. The deposit limit page was decluttered, and a limit widget was introduced in critical journey flows — like the deposit screen — so the limit is visible where the decision happens.

Old illustrated Deposit Limits page next to the decluttered Deposit Limit page and a deposit screen showing an inline limit widget
Deposit limit page decluttered, and a limit widget introduced in the deposit flow.
Before and after comparison of the tools hub, deposit limit page and deposit flow
Before and after: tools hub, deposit limit page and deposit flow.
06

What didn’t go through

Gamification

Reward mechanics for users who proactively set limits.

Home page concept with a 'Do you know your limits? Take the quiz' card

Managing tools directly in page

All tools viewable and editable in the same surface. User testing showed it created confusion: people struggled to understand what was editable, what was informational, and how the tools related to each other.

Safer Gambling page concept with every tool expandable and editable inline

Dev alignment

Some things weren’t feasible within the development timeline. The transactions section was delivered as a link to a separate transactions page, to be implemented as a future iteration.

Deposit limit page designed with an inline transactions list, next to the shipped version linking out to a transactions page
Designed (left) vs. shipped for the first release (right).
07

Outcome

Deposit limits set within the first week
+50%
Deposit limits set within the first week

What this measures: not just a conversion metric, but a sign that users finally understood which tool applied to them, why they existed and how to use them.

What this means: the same design decision, validated across four brands with distinct audiences, different visual identities and separate regulatory contexts.

A system that held up everywhere it was deployed.

08

Reflection

Winning the argument for scope expansion was the right call. The evidence supported it. The outcome validated it.

But expanding scope in a regulated, time-pressured environment surfaces implementation edge cases that discovery alone can’t fully anticipate.

Next project

90 Minute Payout — Ending late-game heartbreaks

View case study
Betfair app showing the ACCA Builder with the 90 Minute Payout market signposted