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
Brian Cox's Wonders of Life
Explore the majesty of nature in breath-taking 3D with Professor Brian Cox as your personal tour guide.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
16 ratings · Top 50%
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 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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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 Brian Cox's Wonders of Life: 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 regular updates and user-generated content.
Assumption to check: Limited content updates and new features
Validate with people who use this workflow before building.
Hypothesis 2
Use clearer icons and labels for navigation.
Assumption to check: Navigation can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Introduce quizzes or interactive features to enhance learning.
Assumption to check: Lack of interactive elements
Validate with people who use this workflow before building.
Hypothesis 4
Optimize the app for better performance and lower memory usage.
Assumption to check: App performance issues on older devices
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
Explore the majesty of nature in breath-taking 3D with Professor Brian Cox as your personal tour guide. The follow-up to multi-award winning Wonders of the Universe gives you: ► Over 30 3D creatures and habitats ► Over 2 hours of HD video (wifi connection required for streaming) ► More than 1000 crisply high-res images accompanied by expert commentary ► And it’s all set against a soundtrack that will blow your socks off ► Additional bonus content can be accessed by signing in. (Completely optional! Press "Skip" or "No Thanks" to continue after the Introduction.) From the vast networks of subterranean freshwater caverns of the Yucatan peninsula to the Great White Sharks haunting the South Neptune Islands, from the Hermit Crabs of Christmas Island to the Red Kangaroo of Western Australia, this app will help you uncover the secrets of life in the most unexpected locations and in the most stunning detail. Explore the vision of the Kangaroo, the DNA of the Chameleon or the hearing of the Mohave Desert Sand Scorpion in its natural habitat in scintillating 3D detail, delving deep down variously into the detail of microbial life, the inner eye, the second law of thermodynamics, and more. Along the way you’ll learn how everything on Earth, from the smallest microbe to the largest giraffe, is constructed from the same fundamental building blocks and is subject to the same laws of nature. Professor Cox and BBC Head of Science Andrew Cohen underpin the experience with over 80 articles delving into intricacies of the natural world and the laws which bind it, alongside over 2 hours of footage from the series and 30 mind-blowing 3D models, all optimised for the iPad’s retina display and set in an interface designed bespoke for IOS 7. The app seamlessly complements the Wonders of the Universe app (chosen by Apple as one of the best apps of 2012), adding in a tranche of additional information to Brian’s compendium of information on our solar system. ............. Praise for Wonders of Life: "Brian Cox’s Wonders of Life has the professor’s skillful and engaging commentary alongside amazing video and graphics that explain the science and intricacy of life on Earth." - New York Times "Wonders of Life really is a treat of an app." - The Next Web "Wonders of Life is not only an amazing achievement, it's modern media done right. More like this, please." - Rene Ritchie, iMore "We have to say – it’s pretty special." - The Next Web
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.
SUGGESTED BUILD STACK
React Native
Expo
React Navigation
Zustand
Axios
Shadcn/UI
BUILD KIT DIFFICULTY
Expert
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.
