App Overview

Dictionaries icon

Dictionaries

物書堂 · Reference

“Dictionaries” is an electronic dictionary viewer app made to allow users to efficiently use various dictionaries

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.2
80 ratings · Top 30%

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

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What's included19 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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Dictionaries: 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

Expand language support and add user-requested languages.

Assumption to check: Limited language options compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Implement offline access to dictionaries and search history.

Assumption to check: Lack of offline functionality

Validate with people who use this workflow before building.

Hypothesis 3

Create a more unified and polished UI experience.

Assumption to check: Inconsistent user interface design

Validate with people who use this workflow before building.

Hypothesis 4

Optimize search performance and loading times.

Assumption to check: Search results can be slow

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

“Dictionaries” is an electronic dictionary viewer app made to allow users to efficiently use various dictionaries. Our popular standalone apps have been integrated into a single app where users can search multiple dictionaries at once. You can purchase and use a variety of dictionaries, including English, Japanese, French or other language dictionaries, from the “Dictionary Store” which can be accessed from within the app. Searches • Batch Search (Consolidated Search) allows users to search multiple dictionaries at once. • The display order of dictionaries used in the batch search can be customized. • The keyboard language switches automatically depending on dictionary search groups. • Handwriting input is possible for Japanese, Old Japanese, Kanji, Chinese, Korean, and Russian dictionaries. • Using Pattern Search, users can search for words even if a part of the spelling is unknown. Trace and Jump • Users can easily jump to not only other words in the same dictionary but other dictionaries as well simply by tracing words in a definition, allowing users to go on a journey of intellectual curiosity through the dictionary as their hearts desire. Collection • Purchased dictionaries are shown as icons on the Collection screen. • By opening a dictionary from the Collection screen, users can also carefully go through a single dictionary. Even in this case, users can use the “Trace and Jump” function to easily jump to another dictionary. • The display order of dictionary icons on the Collection screen can be changed to the user's preference. Bookmarks • Users can bookmark their favorite words. In addition, users can also efficiently categorize these bookmarks using the Bookmark Folder. • By turning on Quick Bookmark, users can quickly add/remove bookmarks simply by tapping the Bookmark icon. Search History • In History, display frequency is automatically recorded so that users can immediately recognize words they search for repeatedly. iCloud • Users can synchronize Bookmark and History data among all devices by turning on iCloud. Multitasking • Users can display websites, documents, and more alongside their dictionary by using the Multitasking function on the iPad. By turning on Clipboard Search, users simply have to copy the word they wish to look up in order for the app to find that word in multiple dictionaries. Substantial Lineup • The Dictionary Store carries a large number of full-scale dictionaries, and we plan to further improve this selection in the future as well. • The following English dictionaries are available. Check in the Dictionary Store, which can be accessed from within the app, for more information on each of these items. - Oxford Advanced Learner’s Dictionary 10th edition (OALD) - Oxford Learner’s Dictionary of Academic English - Oxford Learner’s Thesaurus - Oxford Collocations Dictionary - Practical English Usage - Collins COBUILD Advanced Learner’s Dictionary 10th edition - Collins COBUILD Advanced American English Dictionary 3rd edition - Collins COBUILD Intermediate Learner’s Dictionary 4th edition - Collins English Dictionary with Thesaurus An internet connection is required to purchase content.Usage fees and terms of use may apply.

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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.

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BUILD KIT DIFFICULTY
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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.