LookUp: English Dictionary

What it does

LookUp is a comprehensive English dictionary and vocabulary-building tool. Beyond standard definitions, it provides a 'Word of the Day' to encourage daily learning, allows users to save words into themed collections, and offers an AI-powered search that explains how words are used in specific contexts. The app also transforms saved collections into interactive quizzes to help users master new vocabulary.

Where it shines

LookUp excels by integrating learning tools directly into its dictionary function. The transition from a passive word list to an active learning quiz (06:12) is a standout feature, making vocabulary practice engaging. The AI-powered search (02:34) is another highlight, moving beyond simple definitions to answer natural language questions about word usage, which is incredibly useful for writers and learners. Finally, the app’s monetization feels fair and contextual; the paywall (00:17) only appears when a user tries to access a premium feature, explaining its value at the moment of highest intent.

UX highlights

Clean Information Hierarchy: The word detail screen is well-organized, presenting meaning, origin, and thesaurus entries in a scannable format that doesn't overwhelm the user.
Gamified Learning: Completing a learning session triggers a rewarding confetti animation and a 3D trophy (07:33), providing positive reinforcement that encourages repeated practice.
Contextual Actions: Features like adding a note or saving to a collection are presented as clear, actionable buttons directly on the word detail screen (00:54), making them easy to discover and use.
Deep Customization: The settings menu (08:11) offers extensive control over the user experience, from notification timing and app icons to the specific information displayed in search results.

Monetization & growth

The app operates on a freemium model, with a single 'LookUp+' subscription unlocking advanced features. The paywall is not shown on first launch. Instead, it is contextually triggered when a user taps on a premium feature like adding a note or using the thesaurus. The paywall itself (00:17) uses a swipeable carousel to showcase the benefits of upgrading. It offers monthly, yearly, and lifetime plans (00:30), appealing to a wide range of user commitment levels.

Who it’s for

LookUp is ideal for students preparing for standardized tests like the GRE, writers looking for a powerful thesaurus and contextual examples, and non-native English speakers aiming to deepen their vocabulary. Its daily word feature also appeals to anyone with a general curiosity for language. The combination of utility and active learning tools makes it a versatile companion for a broad audience.

Notes & opportunities

While powerful, the AI search feature is initiated with a pull-down gesture on the main screen (02:25), which may not be immediately obvious to new users. Making this feature more prominent could improve its adoption. Additionally, the main screen presents many different 'Discover More' cards, which could feel slightly unfocused. Streamlining this discovery feed could help guide users to the most valuable content more effectively.