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.
* Gold winner of “Independent Publisher Book Awards” 2014 and “Global Ebook Awards 2014” *
$2.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for SHERLOCK MOVIEBOOK: 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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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
Assumption to check: Limited content and updates for new movies
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription management can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Search functionality lacks advanced filters
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
* Gold winner of “Independent Publisher Book Awards” 2014 and “Global Ebook Awards 2014” * * Nominated for Digital Book Awards 2015 * ‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ AppAdvice.com: “Sherlock: Interactive Adventure is unlike anything else you've seen on iOS, or perhaps on any digital platform for that matter”. 148apps.com: “SHERLOCK: Interactive Adventure is first and foremost a well told story, but those interactive elements ensure it sticks in the mind a lot more so than a regular e-book”. AppPicker.com: “SHERLOCK: Interactive Adventure is so much more than a book, even though you can treat it like a book if you want to. Everything about this book is perfect, and the extra options and interactivity are so well-developed, that it didn’t feel like I was reading a book anymore. It truly is the next level of reading and where I expect all the books to be in the future”. ‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ SHERLOCK: Interactive Adventure is an app that will make you look at interactive books in a whole new light. Allow us to introduce you to “The Red-Headed League”, the first book in this brand new interactive series about the famous detective. Read, listen, embark on a journey, conduct an investigation, and discover the world of the great detective Sherlock Holmes for yourself. There is more to this story than just words and pictures. In place of simple illustrations, 3D animated images adorn its pages. You are no longer looking on from the outside: you are directly involved in the events taking place, and see the world through the eyes of Dr Watson. Can you remember your favourite book? What was it that you loved so much about it? It might have been the gripping plot, the amazing characters, the incredible atmosphere... When we read a book, we picture everything taking place in colourful images. Sometimes illustrations help to get our imagination going. We enjoy looking at them, but sometimes this is simply not enough. After all, an illustration in a book is no more than a keyhole that we can peek through in order to catch a glimpse of the imaginary world created by the author. But have you ever wanted to look further through the keyhole and open that secret door? We bet you have... wouldn’t it be interesting to find yourself standing right next to your favourite character, and to be able to explore their world? To touch all the objects in the room, and have a good look at them? When we created SHERLOCK: Interactive Adventure, we threw open the doors to the world of Victorian England, and we are delighted to be able to invite you in with us. We have lovingly recreated the interiors and street scenes of nineteenth-century London. We have created the perfect combination of a classic book, an audio book, a film, a historical study, and an illustrated encyclopaedia, incorporating elements of gameplay. ‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ This interactive book has been created exclusively for the App Store ‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ Special features: • the authentic, original text • an audio version read by Simon Vance • 30 plot-based scenes packed full of 3D animation • a collection of period articles containing descriptive text • dossiers on the key characters • a search mode to help you find articles and clues • an interactive map of 19th-century London • 20 original musical themes • supports the very latest iOS functions • Available languages: English, German, French, Spanish, Russian • It is recommended that you use a Wi-Fi connection to download the app • NOTE: Requires iOS 7.0 or later. Compatible with iPad 2 and later; iPhone 4s and later; iPod touch (5th generation) ‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ Would you like to support the project and see more titles in the series released? Please write to us at [email protected]
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.