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
150 Must Read Books All Time !
150 MUST-READ BOOKS! ALL IN ONE APP!
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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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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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for 150 Must Read Books All Time !: map the core Books 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
Offer user-generated content or community recommendations.
Assumption to check: Limited book selection compared to larger platforms
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline reading functionality.
Assumption to check: No offline access to books
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to share book recommendations on social media.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear information about premium features and trials.
Assumption to check: In-app purchases can be confusing
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
150 MUST-READ BOOKS! ALL IN ONE APP! Crime and Punishment - Dostoyevsky The Jungle Book - Rudyard Kipling Moby Dick - Herman Melville Don Quixote - Cervantes The Seagull - Anton Chekhov Ulysses - James Joyce War and Peace - Leo Tolstoy Frankenstein - Mary Shelley Beyond Good and Evil - Nietzsche The Adventures of Huckleberry Finn - Mark Twain The Republic - Plato The Picture of Dorian Gray - Oscar Wilde The Count of Monte Cristo - Dumas Les Misérables - Victor Hugo Fathers and Sons - Ivan Turgenev Dracula - Bram Stoker The Prince - Machiavelli A Tale of Two Cities - Dickens Great Expectations Oliver Twist The Brothers Karamazov Jane Eyre - Charlotte Brontë Pride and Prejudice - Jane Austen Gulliver's Travels - Jonathan Swift Anna Karenina The Call of the Wild Walden - Thoreau The Divine Comedy - Dante Wuthering Heights Tess of the D'Urbervilles - Thomas Hardy The Idiot -Dostoyevsky Hamlet Alice in Wonderland The Wealth of Nations - Adam Smith Swiss Family Robinson The Iliad and The Odyssey The Metamorphosis - Kafka Voltaire's Philosophical Dictionary The Young Man’s Guide - William Alcott The Art of Warfare - Sun Tzu The Rough Riders - Roosevelt Leviathan - Thomas Hobbes Cyrano de Bergerac - Edmond Rostand The Federalist Papers Robinson Crusoe - Daniel Defoe Treasure Island - Robert Stevenson Fear and Trembling - Kierkegaard Paradise Lost - John Milton King Solomon’s Mines - H. Rider Haggard The Red Badge of Courage - Stephen Crane Self Reliance - Emerson Little Women - Louisa May Alcott Leaves of Grass - Walt Whitman The Adventures of Sherlock Holmes A Christmas Carol The Critique of Pure Reason - Immanuel Kant The Scarlet Letter - Hawthorne The Hound of the Baskervilles - Arthur Conan Doyle The Adventures of Tom Sawyer 20,000 Leagues Under the Sea - Jules Verne Heart of Darkness - Joseph Conrad Uncle Tom's Cabin - Harriet Stowe The Three Musketeers - Dumas The Strange Case of Dr Jekyll and Mr Hyde David Copperfield Grimm's Fairy Tales The Hunchback of Notre Dame - Victor Hugo Beowulf Aesop's Fables Romeo and Juliet Macbeth Sense and Sensibility - Jane Austen Faust - Goethe The Wind in the Willows The Trial - Kafka The Man in the Iron Mask - Dumas Emma - Jane Austen A Midsummer Night's Dream Black Beauty - Anna Sewell The Canterbury Tales - Chaucer Madame Bovary - Flaubert A Journey to the Center of the Earth The Wonderful Wizard of Oz The Legend of Sleepy Hollow Peter Pan - J. M. Barrie The Man Who Would Be King - Kipling Julius Caesar - Shakespeare Around the World in Eighty Days - Jules Verne King Lear - Shakespeare Candide - Voltaire The Communist Manifesto Through the Looking-Glass - Lewis Carroll The Turn of the Screw - Henry James Ivanhoe - Walter Scott Lady Chatterley's Lover The social contract - Rousseau Mansfield Park The Bible The Tell-tale Heart - Edgar Allan Poe Andersen's Fairy Tales Vanity Fair - Thackeray Narrative of the Life of Frederick Douglass Dead Souls - Nikolai Gogol The Poetics - Aristotle The Mysterious Island - Jules Verne Tao Te Ching Le Morte d'Arthur Utilitarianism - John Stuart Mill The History of the Decline and Fall of the Roman Empire Confessions - Rousseau The Pilgrim's Progress The Lady of the Camellias The Quran The Interpretation of Dreams The Sorrows of Young Werther Goethe Nana Letters on England Prior Analytics and Posterior Analytics Meditations - Marcus Aurelius The Theory of Moral Sentiments Mein Kampf How The Steel Was Tempered The Story of Zoya and Shura The Adventures of Pinocchio Common Sense The Origin of Species Thus Spoke Zarathustra The Mayor of Casterbridge Second treatise of government White Nights On Liberty Middlemarch Parallel Lives - Plutarch Utopia Buddhist Sutras The Antichrist A Vindication of the Rights of Woman The Analects - Confucius The Black Tulip Riders of the Purple Sage Miss Julie Sahih Muslim The Age of Innocence Jewish Fairy Tales and Legends Stray Birds The Red and the Black Code of Hammurabi On War - Clausewitz The Mother Sister Carrie
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Zustand
React Native Reanimated
BUILD KIT DIFFICULTY
Intermediate
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.
