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UX Audit | 99Bitcoins

Crypto Price Chart UX/UI Redesign

This project involved a comprehensive UX audit and UI proposal for a cryptocurrency price chart tool. The goal was to transform a data-heavy interface into a modern, intuitive, and trustworthy experience that effectively represents price movements and historical events over time.

Role
Product Designer
Scope
UX Audit, Competitor Benchmarking, UI Redesign, Prototyping.
Tools
Figma
Crypto Price Chart UX/UI Redesign — featured visual

The Diagnostic (UX Audit)

My evaluation was categorised into three main levels of priority:

  • What Worked Well: The core functionality was solid. The tool provided a great depth of information and successfully integrated relevant historical events into the price timeline.
  • What Needed Improvement: Identified legibility and hierarchy issues. Certain functionalities were not immediately recognisable, and the general visual treatment lacked professional polish.
  • What Needed Fixing: Critical issues regarding the Visibility of System Status and User Control. Users had difficulty undoing changes or understanding their current state within the navigation.

Below is a screenshot of how the chart was looking prior to the audit.

The original chart prior to the audit
The original chart prior to the audit

Competitor Analysis (Benchmarking)

To ensure the redesign met industry standards, I analysed market leaders: CoinMarketCap, Binance, and CoinGecko.

  • Insights: I focused on their use of responsive navigation, "zoom and drag" capabilities, and how they handle high-density data.
  • Takeaway: Top-tier platforms prioritise clean layouts and intuitive hover states to manage complexity without overwhelming the user.

Identified Pain Points

Through an evaluation of the existing tool, several critical usability and visual issues were identified:

  • System Visibility & Control: Users had no clear way to undo changes or navigate back to previous timeframes after interacting with specific events.
  • Cognitive Load: Very long, unformatted numbers were difficult to process at a glance.
  • Information Hierarchy: The layout used centre-aligned text and poor column spacing, making legibility difficult in data-heavy sections.
  • Visual Clutter: Overlapping event titles on long-term charts created visual noise, hiding the actual price movement.
  • Visual Context: The colour palette and UI elements felt random, failing to provide a cohesive brand experience or a sense of financial security.
  • Navigation & Interaction: The "Back" button was missing or non-functional when navigating event timeframes, leaving users stuck.
Audit annotations across the existing experience
Audit annotations across the existing experience

Strategic Solutions

I implemented a series of strategic design changes:

  • General UI Update: Transitioned from a generic look to a polished, modern aesthetic with dedicated Light and Dark themes.
  • Visibility & Status: Improved the feedback loop so users always know which timeframe or filter is active.
  • User Control: Added functional controls to undo changes and navigate through historical data seamlessly.
  • Recognition over Recall: Made actions and options visible (e.g., explicit toggles for Volume and Events) so users don't have to search for tools.
  • Data Optimisation: Implemented numerical abbreviations (e.g., $190T instead of $190,000,000,000,000) and optimised the hierarchy of price and market cap display.

Design Execution (The Result)

The final proposal features a clean, high-fidelity interface (applied to the 99Bitcoins brand) that balances density with clarity.

  • Interaction Design: A new vertical cursor line and pinpoint markers on the price line allow for surgical precision when reading data.
  • Event Management: Introduced truncated titles and compact hover states to keep the chart readable even when multiple historical events occur simultaneously.
Final UI proposal in light and dark themes
Final UI proposal in light and dark themes
Applied to the 99Bitcoins editorial context
Applied to the 99Bitcoins editorial context

Lessons Learned

  • Clarity is Trust: In the crypto space, visual professionalism directly correlates with the user's perception of data accuracy.
  • Information Architecture Matters: Even the most valuable data is useless if it's not scannable. Small changes like text alignment and number formatting significantly reduce cognitive load.
  • Heuristics as a Compass: Applying established UX principles (like Visibility of System Status) helped transform a functional tool into a delightful user experience.

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Portrait of Marta

The human behind

Hola! I'm Marta, a Product Designer with a strong visual and brand-driven approach, combining UX/UI, design systems and creative direction.

With experience across product teams, startups and agencies, I design scalable digital experiences while shaping brand identity and visual languages across platforms.

I enjoy working at the intersection of product design, brand and visual storytelling, translating research and product strategy into intuitive interfaces, cohesive design systems and distinctive digital products.

When I'm not pushing pixels, you'll find me drawing, dancing, travelling, or getting lost in nature. Driven by psychology, obsessed with good food, and always experimenting with new crafts. Life continuously gives me experiences and ideas that shape how I design.

In their own words

Marta has been instrumental in defining our branding and design direction at ClickOutMedia. She proved to be a highly skilled product designer and an outstanding collaborator, consistently adding value to every project.

Marta adapted easily to new challenges, always bringing thoughtful, user-focused solutions. Her versatility and positive attitude made her a pleasure to work with, and her impact on our design culture will be felt long after her time with the team.

Thinesh JeganHead of Design

I hired Marta while working at Pickatale, an ed tech start up. From the moment she joined she was such a joy to work with, always calm, professional and providing great feedback and a great team player.

At Pickatale we had some very intense projects and deadlines to meet, and I can definitely say we wouldn't have accomplished meeting and exceeding those expectations without her help.

Valerie PaurLead Product Designer

Working with Marta has been a great experience. She is highly organised and genuinely creative, with a strong ability to craft cohesive, thoughtful, and high-quality interfaces and branding.

Her Figma files reflect real product maturity; she knows how to optimise files and build systems that are clean, scalable, and collaborative.

Beyond her technical strengths, Marta brings radiant, positive energy to the team. She combines structure, creativity, and team spirit in a rare and valuable way.

Florian GouloubiSenior Product Designer

Say Hola!

Drop me a line at cleonmarta@gmail.com

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