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bunq

FINTECH APP

Growth hacking 3k to 100K new personal users by improving onboarding and accelerating activation.

This page shows snippets of my work at bunq.

Overview
Role — UX Growth Hacker
Discovery & Research
UX/UI Design
Experimentation & Growth Design
At bunq, I led design for acquisition, onboarding, and activation during a critical 10x growth phase. Embedded in the growth team, I worked closely with product and engineers to improve the first-time user journey.

Our goal was to reduce drop-offs, simplify onboarding, and drive early activation. The work led to a 15% increase in card activations and helped boost 2-month retention from 45% to 60% among freemium users.
Key results
15% increase in card activations
19% increase in accounts with funding
60% 2-month retention after trial, by begin of 2019
56% increase in customers using bunq as primary bank (estimate based on salary deposits)
Goals
Reduce activation drop-off
Activation is where key habit-forming actions happen—like funding an account and ordering a card. These steps had the highest drop-off rates, causing many users to abandon the app before they built lasting engagement.
Increase completion rate of critical actions early on
Our focus was on making the first 7 days stickier. Daily activity in the first week strongly correlated with retention.
Increase free trial to premium conversions and 2 month retention
Our goal was to turn free trial users into paying customers. Users who funded their account and started using their card early were much more likely to stay, showing how important early habits are for long-term retention.
Approach
Quantitative research
Analyzed user behavior through event tracking, quick tests, and community feedback
Qualitative research
Ran 30+ interviews to understand motivations and pain points
Experimentation
Tested UX improvements through over 9 low-cost experiments before scaling
Discovery
What was the core problem? Bunq's playfulness outplayed itself. The onboarding was unclear. Too much useful information was hidden, and the overly playful tone left users guessing how features worked or what they were signing up for.
How much does it cost?
What are the different membership options?
What is included in the free trial?
There wasn’t even a pricing page 😲
Landing page experiment
A quick experiment using Google Optimize showed that users were just as interested in learning more as they were in downloading the app. We saw a clear increase in unique clicks on 'learn more' links, confirming strong engagement with the content.
40% of all visitors who downloaded the app from this session visited the pricing page.
User interviews
After our first experiment, we expanded the work by running 30+ interviews with non-users. We used their feedback to create a customer journey map that revealed where people got confused, what they felt, and where the main pain points were—giving us a solid base for new ideas.
Pain points
We uncovered three key issues during testing. First, there was cost ambiguity around ordering a bunq card—most respondents were hesitant, as they assumed there would be a fee and weren’t given clear information. Second, the location sharing for the card order felt misleading o many users, which seemed to be more related raud detection. Finally, users often got lost after account approval, unsure of what to do next or how to activate their account effectively.
Card cost ambiguity and lack of utility
Users weren’t sure if the card was free, which made them hesitant to continue. Many expected a Mastercard they could use right away, but instead saw a basic debit card with unclear value.
How much does it cost?
What are the different membership options?
What is included in my membership?
What is a debit card?
Do you have MasterCard?
Location sharing pushed users away
The second step asked for the user's address to deliver their card, with an option to share their location. But when selected, the prompt mentioned it was for fraud detection—causing some users to feel uneasy or suspicious.
Do I have to pay shipping costs?
Why do you need access to my location data?
What is included in the free trial?
Without direction users forget quickly
After approval, users were dropped into the app with no clear direction. The welcome screen was just a list of options, with the most options being below the fold. There were no prompts to guide them through key actions.
Where can I find my IBAN?
I had a look around the app, but  something came up and forgot
Solution
Alongside these experiments, we looked at ways to improve parts of the onboarding and activation flow. Adjusting logic and combining certain steps resulted in faster account creation and an onboarding sequence with logic.
Placing card activation before KYC
We believed that if we showed users the value of bunq upfront—before asking for personal details—they’d be more likely to stick around and complete signup.
Old flow
New flow
Delivery
We released a series of updates that were tested with low-cost experiments before scaling out to full production.
The full experience
Card cost ambiguity and utility
We repositioned the online MasterCard for free trial users. This gave immediate utility to use the app. Secondly, we reduced ambiguity around card pricing, which led to a +6% increase in funded accounts — a key revenue moment.
Location sharing friction
Clear up loose ends on data. Be more up-front about what bunq uses with location data.
Users felt lost after approval
Redesigned the flow to include sequenced banners in order of logical activation goals.
Signup and retargeting experiments
It was also part of my role configure acquisition experiments across ad networks like Snapchat, Google, Facebook, and other sources. I worked with a more technical paid marketing specialist, but also set some up myself. Our ad to landing page retargeting & marketing campaigns were aimed at various cohorts we explored through testing. Cohorts were defined on detailed events recorded from Adjust.
Cost of acquisition results
€6-8 CAC (Snapchat)
€12-19 CAC (Google, FB, Others)
Something extra to seal the deal.
To drive early funding and referrals, we introduced two lightweight incentives. After card activation, users saw a banner offering 2 free months of Premium when they topped up €120—an easy way to get money into the account while offering real value. With A/B testing we improved the referral campaign with clearer copy and layout.
Lessons
Growth funnels are living systems. They should be conceived as circular habit forming structures, not linear paths.
The devil is in the details. Small things can make a big impact on performance.
Be clear and concise about features and pricing. Misleading erodes trust.
Don’t just shout at customers about how great you are.  Grab them by the hand and show them.
A smooth path alongside a strong tech stack is what wins.

/case studies

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