Filtering & sorting
Preferred filtering and sorting in product-list pages.
PRODUCT DESIGN LEADERSHIP · RESEARCH-LED REDESIGN
FidiboMaking digital reading easier to discover, organize, and enjoy.
A research-led redesign of how people find, compare, buy, organize, read, and listen to digital content.
CASE STUDY / 2020–2023Follow the evidence
02 / CHALLENGE
One ecosystem. Many different reading journeys.
Fidibo combines e-books, audiobooks, podcasts, one-off purchases, and subscriptions. Finding the right title, comparing editions, managing a growing library, and getting comfortable with reading controls create different challenges for different users.
Research surfaced friction across discovery, library organization, Reader settings, and subscription expectations.
DESIGN QUESTIONHow might we make those connected journeys clearer without introducing additional complexity?
03 / DISCOVERY & EVIDENCE
Let behavior challenge our assumptions.
Our team combined qualitative interviews, a survey reported as having 218 responses, competitive benchmarking, and observed usability sessions to identify problems worth addressing.
Not every finding was a metric, and not every request became a feature.
Purchase history
Rated access to purchase history as extremely important.
Reader dark mode
Found the existing Reader dark mode uncomfortable for their eyes.
Historical survey answers reported in the original case study—not post-redesign performance. Per-question sample sizes are not separately confirmed in the provided images.
04 / DECISIONS THAT MATTER
Three directions shaped by research.
- 01
Make discovery clearer
Evidence Users described difficulty finding books, navigating categories, and comparing different editions.
Design direction Clarify discovery patterns, increase the visibility of relevant book information, and explore more useful filtering and list structures.
- 02
Make the library and Reader easier to use
Evidence Book organization and shelf concepts caused confusion; some users struggled to locate Reader settings or wanted more flexible reading modes.
Design direction Revisit library information architecture, make actions clearer, and improve the accessibility of reading controls.
- 03
Communicate subscription limits honestly
Evidence Separate research into FidiPlus found that some users expected access to the entire catalog, while the subscription included only selected titles.
Product recommendation Make eligibility and access restrictions clearer before purchase and help users assess which titles are included.
Documented research recommendation; this study does not claim it shipped unchanged.
The montages document design work. They do not imply that every concept shown launched unchanged.
05 / SCALABLE DESIGN FOUNDATION
A coherent system behind the screens.
Our team built reusable design-system foundations, including typography, color, components, and interaction patterns, to support consistency and collaboration between design and engineering.
FoundationsTypography · color · iconography+
ComponentsButtons · inputs · product patterns+
06 / VALIDATION & ITERATION
Testing revealed both progress and remaining friction.
We tested the prototype with six recently active users, observing completion of realistic tasks and identifying places where the experience still needed clarification.
Reader controls, library organization, and subscription understanding remained useful targets for the next round of improvement.
PROTOTYPE TASK RESULTS6 PARTICIPANTS
| Prototype scenario | Successful task completions |
|---|---|
| Login | 6/6 |
| Search & Explore | 6/6 |
| Categories & Purchase | 6/6 |
| Podcast & Rating | 5/6 |
| Library & Shelves | 4/6 |
| FidiPlus | 4/6 |
| Reader | 3/6 |
Small-sample prototype usability study—not an A/B test or verified post-release conversion data.
07 / OUTCOMES & REFLECTION
Research-led design, with outcomes reported responsibly.
The documented outputs include redesigned core journeys, evaluated prototypes, and reusable design-system foundations. The work provided specific user evidence to guide subsequent design decisions.
My takeaway: Leading product design means connecting user problems to defensible design choices, then staying open to evidence that a solution still needs work.
An earlier 20% conversion improvement figure was a pre-release estimate. It is not reported here as a measured post-launch result.
Book covers, titles, and prices in the original case-study screens were illustrative. Images show an earlier brand identity and are preserved as authored.
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