App Overview

American Heritage® Deluxe icon

American Heritage® Deluxe

Enfour, Inc. · Reference

*NOTE: there is a newer version of American Heritage® Dictionary available on the AppStore

$16.99 · In-app purchases

PRICE
$16.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
189 ratings · Top 15%

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 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 American Heritage® Deluxe: 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

Implement advanced search filters and suggestions.

Assumption to check: Limited search functionality often leads to frustration

Validate with people who use this workflow before building.

Hypothesis 2

Offer a freemium model with premium features.

Assumption to check: High price point can deter users

Validate with people who use this workflow before building.

Hypothesis 3

Include more usage examples for better understanding.

Assumption to check: Lack of contextual examples for word usage

Validate with people who use this workflow before building.

Hypothesis 4

Optimize app performance and stability.

Assumption to check: Occasional app crashes during heavy usage

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

*NOTE: there is a newer version of American Heritage® Dictionary available on the AppStore. Tap on the "Enfour, Inc." link for AHD5. ________________________________________ The entire 2,074 page, 7.5 pound dictionary with its nearly 300,000 terms –plus 64 thousand recorded sound files & "Roget's II: The New Thesaurus". • The American Heritage® Dictionary of the English Language • Roget's II: The New Thesaurus ________________________________________ "In the battle of the Big Three dictionaries, American Heritage® stands out on iPhone" (4 mice) — MacWorld ________________________________________ Includes all the functionality of these two titles in one application. This iPhone/iPod touch version has the entire 2,074 page, 7.5 pound dictionary with its nearly 300,000 terms more than 33,000 written examples –plus 64 thousand professionally recorded sound files. Not to mention the complete front matter and appendices, zoomable graphics -all available instantly at your fingertips. Main Features: • entire text of these best selling tomes • complete front matter and appendices • unique three-way cross-referencing search • real-time progressive look-up • wildcard pattern searches (with * ?) • fallback online search for esoteric or archaic words and the latest slang • spelling suggestion dictionary included • hyperlinking to appendices and between books • pop-up pronunciation symbols chart • IPA symbol conversion • etymology (word history) with root links • professionally recorded sound files • zoomable graphics • support for search from other applications • Bookmarks with folders & editable notations • automatic search History • an "AI Teacher" for deeper explanations or help for ESL students in 98 languages • AI boosted anagram generator • "Share" module to search within other apps  - with a history feature, so you can study later • "Word-of-the-Day" feature with multiple words sets • "Today" & LockScreen widgets • 3D Touch support • DarkMode support • Open via Siri • iPad Pro multi-screen and Drag & Drop • iPad "Fast App Switching" (Multitasking) • OS-independent app localization • iPhone, iPod, iPad and macOS support • iPhone 17 & iOS26 supported • complete offline use — no Internet connection ________________________________________ "As apps go, only Enfour’s American Heritage® Dictionary stands out for its graphic appeal and functionality. Although I was pleased to have so much lexical firepower in such a compact form, I was annoyed at how poorly the other dictionaries present on the platform." (4 mice) — MacWorld Editor's Choice. ranking = "Great" — MacLife Reviews of the print version: "The Best Dictionary...Designed to appeal to the eye as well as the mind, it is notable for its imaginative illustrations....This is a great family dictionary, and ideal for schoolrooms." — The Courier Journal "This dictionary, now in its fourth edition, makes it fun to look up definitions of words....This up-to-date and eminently useful dictionary features a fabulous full-color design that quickly and effectively guides users to the information they seek." — Library Journal ________________________________________ "The American Heritage® Dictionary of the English Language, Fourth Edition" and "Roget’s II: The New Thesaurus, Third Edition" are published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Houghton Mifflin Harcourt Publishing Company http://www.hmco.com Powered by Enfour's -"UniDict® Engine"

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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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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.