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.
App Overview
Lists for Writers
Lists for Writers is a great addition to any writer’s toolbox
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
492 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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Lists for Writers: map the core Education 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
Introduce a more extensive library of prompts and user-generated content.
Assumption to check: Limited writing prompts compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Enable sharing and collaborative list editing.
Assumption to check: Lack of collaboration features
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline support for accessing lists and prompts.
Assumption to check: No offline access for lists
Validate with people who use this workflow before building.
Hypothesis 4
Add more themes and organizational features for lists.
Assumption to check: Limited customization options for lists
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
Lists for Writers is a great addition to any writer’s toolbox. Helpful to both novice and expert writers alike, this app delivers list after list of prompts and ideas for your brainstorming sessions: names, character traits, plot lines, occupations, obsessions, action verbs, and much more! Whether you are working on a creative writing project, a short story, an essay assignment, National Novel Writing Month / NaNoWriMo, or your next fiction book, this app helps get it done. NEW! Support for multitasking on the iPad! Shuffle and search features! You can now search any list as well as randomly shuffle lists and search results! Includes dictionary support so you can look up most words without leaving the app. Includes a Notepad feature where you can collect any interesting list items for your writing, edit them, and email or print your notes. Featured in Slate magazine and The New York Times! * * * * * "perfect to browse for inspiration" - Cult of Mac Lists included: * Character - Naming - First Names (male and female) - Last Names - People/Roles - Nonhuman Characters * Character - Physical Characteristics - Body Types - Facial Characteristics - General Physical Characteristics - Skin and Complexion - Hair - Clothing * Character - Occupations - Modern - Archaic * Character - Milestones - Anniversaries - Birthstones - Birth Flowers - Zodiac * Personality - Thoughts - General Characteristics - Phobias - Philias - Obsessions - Wisdom - Belief Systems - Emotions * Personality - Behaviors - Character Traits - Bad Habits - Hobbies - Super Powers * Plot - Seven Basic Plots - Thirty-six Dramatic Situations - Conflicts - Issues * Setting - Geographical - Cities (U.S. and World) - Landforms * Setting - Countries by Continent - Africa - Antarctica - Asia - Australia - Europe - North America - South America * Setting - Other - Forms of Government - Encounter Locations - Archaic Locations - Futuristic Locations - Modern Locations - Weather * Genres - Fantasy, Myths, and Magic - Divination and Fortune Telling - Ecclesiastical - Holidays - New Age - Nautical - College Teams - Sciences and Studies - Scientific Instruments - Military Terms - Military Acronyms *Miscellaneous - Animals (Domesticated) - Animals (General) - Animal Sounds - Colors - Color Values - Foods - Vehicles - Feeding and Eating - Textiles - Halloween - Thanksgiving - Christmas - Forms and Shapes - Units of Measurement - Carriages and Chariots - Fighting and Combat - Dance Styles - Bearing - Causation * Words - Grammar - Action Verbs - Dialog Verbs - Nouns - Prepositions - Adjectives - Adverbs - Verbs - Common Misspellings - Transitional Words and Phrases - Word Terms * Words - Fun - Rhyming Words - Gadzookery - Nonsense - Triples - Aussie Slang ***** PRIVACY DISCLOSURE Lists for Writers: - Does not collect or share any personal data - Does not contain any ads - Does not contains in-app purchases - Does include links to the Thinkamingo web site, Facebook page, and Twitter profile in an information page
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.
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BUILD KIT DIFFICULTY
Starter
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.
