Work

Vocabulary Learning App

Design
Case Study

This case study demonstrates how user-centered design can transform vocabulary acquisition into an engaging, intuitive, and effective experience. By leveraging UX principles, the goal is to make learning seamless, motivating, and accessible to all users.

A digital mockup of a vocabulary learning mobile app displayed across multiple smartphone screens. The interface includes various screens such as a welcome page, user profile, practice exercises, multiple-choice quizzes, a dictionary lookup, and progress tracking. The app features a clean, minimalistic design with a grayscale color scheme and accent buttons. Navigation icons at the bottom allow users to switch between Home, Search, Create, Practice, and Account sections. Some screens show interactive elements like 'Fill in the Blank' quizzes, flashcard saving options, and practice session progress.

Problem Statement

Users struggle to memorize and retain new vocabulary due to information overload and lack of engaging learning methods. The challenge is to design an intuitive, research-backed solution that supports active learning and long-term retention.

Understanding the Users (5 W’s)

  • Who? Students, language learners, and professionals seeking to expand their vocabulary.
  • What? A mobile-friendly vocabulary learning app that integrates interactive study techniques.
  • When? During study sessions, work breaks, or daily commutes—whenever users find time to learn.
  • Where? On mobile devices, providing access to learning anytime, anywhere.
  • Why? To create an engaging, effective, and personalized learning experience that helps users retain new vocabulary efficiently.

UX Design Criteria

To ensure a seamless user experience, the app must:

  1. Be intuitive – Provide a clean, user-friendly interface with minimal friction.
  2. Enhance retention – Utilize techniques like spaced repetition and interactive quizzes.
  3. Encourage engagement – Include gamification elements such as progress tracking and rewards.
  4. Support personalization – Allow users to create custom word lists and track their progress.
  5. Ensure accessibility – Design for usability across different devices and user needs.

Key Features

  • Flashcards for quick memorization and active recall.
  • Quiz-based learning (multiple-choice, fill-in-the-blank) to reinforce knowledge.
  • Progress tracking with insights on learned vs. pending words.
  • Custom word lists for personalized study sessions.
  • Gamification elements to encourage consistent learning habits.

Competitive Analysis

Understanding the competitive landscape is crucial when designing a vocabulary learning app. To identify opportunities for innovation, I conducted a competitive analysis of three existing vocabulary-learning applications: Quizlet, DuoCards, and Chegg Prep.

Competitor Overview

AppStrengthsWeaknesses
Quizlet
  • Premade flashcard recommendations based on subject/school.
  • Definition suggestions to save user input time.
  • Multiple study modes (flashcards, matching game, quizzes).
  • Smart review system focusing on incorrect answers.
  • Confusing UI flow when finalizing flashcard sets.
  • Distracting ads in the free version.
  • Lacks a guided first-time user experience.
DuoCards
  • Multiple login options (Google, Facebook, guest mode).
  • Engaging first-time user experience.
  • Swipe-based learning for easy review.
  • Integrates videos and articles for contextual learning.
  • Browser extension for saving new words.
  • Menu icons are unclear without onboarding guidance.
  • Better suited for advanced learners, overwhelming for beginners.
  • Lengthy onboarding experience may cause user disengagement.
Chegg Prep
  • Simple, clear UI with no popups.
  • Ability to mark answers as correct/incorrect.
  • No premium paywall; all features are accessible for free.
  • Allows private flashcard sets at no cost.
  • No study reminders or push notification explanations.
  • UI appears blocky and unpolished.
  • Lacks the richness of features offered by competitors.

Key Takeaways

1️⃣ User Experience Matters
  • Quizlet and DuoCards offer strong functionality but can feel cluttered or overwhelming. A simplified yet powerful UI is key to an engaging experience.
  • Chegg Prep proves that a clean, distraction-free interface can be effective for focused studying.
2️⃣ Personalization & Adaptability Are Crucial
  • Quizlet’s smart review system effectively tailors studying to a user’s needs.
  • DuoCards’ ability to save words from external sources makes learning more contextual.
  • Future design iterations should incorporate adaptive learning strategies to enhance personalization.
3️⃣ Onboarding Experience Should Balance Guidance & Simplicity
  • DuoCards provides a comprehensive onboarding flow but risks losing user attention due to its length.
  • Quizlet’s lack of onboarding guidance makes feature discovery difficult.
  • The ideal vocabulary app should provide a short, engaging onboarding experience that guides users without overwhelming them.

Design Opportunities

Based on this analysis, my vocabulary learning app will prioritize:
A balance between simplicity and functionality, ensuring an intuitive and engaging experience.
Smart review & personalization to optimize retention based on user performance.
A lightweight, interactive onboarding process that educates users without overwhelming them.
Minimal distractions with a refined UI, avoiding excessive ads or cluttered designs.

This competitive analysis highlights gaps in existing apps and informs design decisions that will create a more effective and user-friendly vocabulary learning experience.

User Interviews

Research Objective

To gain a deeper understanding of how users learn, retain, and stay motivated while expanding their vocabulary, I conducted user interviews. The goal was to identify common behaviors, challenges, and preferences to inform the app’s design.

Interview Participants

To gather diverse insights, I interviewed five individuals from different professional backgrounds, all of whom actively engage in vocabulary learning for their work or personal growth:

  • Alice, 26 – Research Assistant, frequently learns industry-specific terminology.
  • Kim, 24 – Aerospace Engineer, expands technical vocabulary for work.
  • Tremaine, 26 – Project Manager, enhances communication and leadership terminology.
  • Alicia, 24 – Tattoo Artist, discovers and learns new artistic and cultural terms.
  • Maria, 24 – Subtitle Translator, constantly learns new words to improve translations.

Each participant provided insights into their vocabulary learning habits, challenges, and preferences, shaping the design of the app to better meet user needs.

Interview Questions

During the interviews, I asked participants the following questions to uncover their learning strategies, pain points, and motivations:

  • What are your initial feelings when you start learning new vocabulary? Why do you feel that way?
  • How do you keep track of what you’ve learned and what you need to learn?
  • Tell me about some strategies you use to learn new vocabulary.
  • What struggles do you often encounter when you are trying to learn new vocabulary?
  • How do you fit learning new vocabulary into your schedule?
  • What challenges do you come across when trying to fit learning new vocabulary into your schedule?
  • What motivates you to study new vocabulary?

Key Findings & Insights

1️⃣ Users Rely on Flashcards and Term Lists

💬 “I usually make flashcards or lists when studying new words. It’s the easiest way to review quickly.”

  • Users commonly use flashcards and definition lists as their primary study tools.
  • While effective, this method lacks interactivity and contextual learning, making it harder to retain words long-term.

2️⃣ Learning in Context Enhances Retention

💬 “I remember words better when I see them used in a sentence or in something I’m watching.”

  • Users struggle to retain words when memorizing isolated definitions.
  • Exposure to words in real-world contexts, such as reading articles, watching videos, or using them in conversation, helps with retention.

3️⃣ Motivation Declines Over Time

💬 “I start off excited to learn, but I lose motivation after a while if it feels repetitive.”

  • Many users experience diminished motivation over time, especially when learning feels tedious.
  • Features like gamification, progress tracking, and reminders could help maintain engagement.

4️⃣ Mobile Accessibility is Key for Consistent Learning

💬 “I study when I have a few minutes—like waiting for the bus or on my break.”

  • Users fit vocabulary learning into their daily routines when resources are easily accessible on their phone.
  • The app should support short, convenient study sessions that fit into users’ busy schedules.

5️⃣ Media Consumption as a Source for New Words

💬 “Sometimes I hear a new word in a podcast or a show and look it up later.”

  • Users naturally discover new words through media (e.g., articles, videos, podcasts).
  • The app should help users capture and learn new words in real-time to integrate into their study sessions.

Design Implications

Based on these insights, the vocabulary app should:
Keep users motivated through gamification, streaks, and progress tracking.
Make it easy to find new words by allowing users to save words from media they consume.
Support contextual learning by incorporating definitions, example sentences, and real-world usage.
Enable quick, mobile-friendly study sessions so users can learn on the go.


By addressing these user needs, the final app design will enhance engagement, improve retention, and fit seamlessly into users’ daily lives.