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
iDoyle: Sherlock Holmes
iClassics: Beyond Engrossing
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
85 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 included15 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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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 iDoyle: Sherlock Holmes: 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
Implement offline storage for downloaded stories.
Assumption to check: Limited offline capabilities; users cannot access stories without internet.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify navigation and improve user onboarding.
Assumption to check: Some users find the navigation confusing with multiple tabs.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance the clarity of subscription options and paywall prompts.
Assumption to check: In-app purchase process can be unclear.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce features like customization of reading themes or bookmarks.
Assumption to check: Lack of personalization options for users.
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
iClassics: Beyond Engrossing iClassics unites the old and the new to create immersive experiences that inspire and move everyone. Serving as a departure from iClassics Production's famed focus on terror and horror, this Immersive Entertainment app is a feature-length artistic and technological rendering of Arthur Conan Doyle's masterpiece, A Scandal in Bohemia. In this innovative Immersive Entertainment app, the legendary detective tale is lovingly and artistically enhanced with interaction, illustration, animation, FX, and OST. By casting a modern glare on A Scandal in Bohemia, the result is a spectacular and wholly original experience that utilizes every feature of modern mobile devices (gyro-perspective, flash, vibration), giving users the sensation that they are helping Sherlock solve the mystery. TILT to find hidden clues TOUCH to uncover essential details TURN to discover what is hidden at first site Sherlock Holmes is a literary creation that transcends his epoch and even his creator, existing as a legend in the minds of everyone, even those who have not even read any of Arthur Conan Doyle's fine works. With the lovingly constructed enhancements for which iClassics Productions has become famous, this feature-length Immersive Entertainment app offers the modern reader the possibility of experiencing the legend of Sherlock Holmes in a wholly original way. ▶ APP FEATURES: Main features: - An hour of interactive stories. - Available in 4 languages: English, Spanish, French and Portuguese. - 1 short story in 3 chapters. More than 50 illustrations, 65 animations and 70 interactive pages. - Illustrated by Jordi Solano and directed by David G. Forés. - Over 25 minutes of Original Soundtrack by Miquel Tejada. - Extras. Sir Arthur Conan Doyle biography and Sketchbook by Jordi Solano. - Original tale from the writer – no cuts, no adaptations. Additional features: - Jump to any page in the book with our handy table of contents. - Page Memory. Leave the app at any moment, and come back to the same page. - Universal App. Pay once, run on iPhone and iPad. - Easy to use interface ▶ ABOUT ICLASSICS COLLECTION: iClassics are interactive experiences based on literature from all times: E.A. Poe, C. Dickens, H.P Lovecraft, Oscar Wilde and many more to come! Discover them at www.iclassicscollection.com ----------------------------------------------------------------- Please SHARE YOUR REVIEW below. It means a lot to us! We'd Love To Hear From You! - Need tech support? Contact us at [email protected] - Say hello to us on FB! facebook.com/iclassicscollection
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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
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.
