App Overview

Learner's Dictionary - English icon

Learner's Dictionary - English

Merriam-Webster, Inc. · Reference

The best dictionary available for English language learners, from Merriam-Webster

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.5
60 ratings · Top 50%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Learner's Dictionary - English: map the core Reference workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Incorporate user-generated example sentences.

Assumption to check: Limited word examples compared to larger dictionaries

Validate with people who use this workflow before building.

Hypothesis 2

Optimize search algorithm for faster results.

Assumption to check: Inconsistent performance during searches

Validate with people who use this workflow before building.

Hypothesis 3

Enhance UI with modern design principles.

Assumption to check: Basic user interface design

Validate with people who use this workflow before building.

Hypothesis 4

Include audio pronunciations for each word.

Assumption to check: Lack of audio pronunciation features

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

The best dictionary available for English language learners, from Merriam-Webster. Master written and spoken English with this app designed especially for learners and teachers of the language. Improve your understanding of English words and phrases with full, clear definitions and numerous usage examples. The app also offers Voice Search – to let you look up a word without having to spell it – along with Audio Pronunciations, Word of the Day, Favorites, and more. This is an essential app for anybody learning English. Features: * No Advertisements * 100,000 words and phrases * 160,000 usage examples that show how each word is used * More than 22,000 idioms, verbal collocations, and commonly used phrases * Count and noncount noun labeling * Voice Search – Say the word and the app will find it for you! * Audio Pronunciations – by native speakers of American English * Integrated Thesaurus: Synonyms & Antonyms * Word of the Day – includes idioms and phrasal verbs * More than 1,000 illustrations * Favorites – lets you keep track of words you want to remember * Recent History – lets you keep track of the words you've looked up * Reader View – lets you hide navigation buttons to see text in full screen Please click the link to the Application License Agreement, below, which includes our App Privacy Policy.

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Axios
Zustand
BUILD KIT DIFFICULTY
Advanced

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.