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
Stuarts' SA Mammals
Discover and explore all 537 southern African mammal species with this comprehensive app by experts Chris and Mathilde Stuart
$15.99 · In-app purchases
PRICE
$15.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
7 ratings · Top 5%
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 Stuarts' SA Mammals: 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
Add quizzes or games related to the mammals.
Assumption to check: Limited interactivity and user engagement features.
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced filtering options.
Assumption to check: Search functionality may be basic.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to share their favorite animals on social media.
Assumption to check: No social sharing features.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a freemium model with essential features free.
Assumption to check: High price point may deter 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
Discover and explore all 537 southern African mammal species with this comprehensive app by experts Chris and Mathilde Stuart. Fully updated, this app now extends coverage to Angola, Zambia, Malawi and northern Mozambique, featuring all southern African mammals, from aardvark, shrews and bats to the dolphins and whales that inhabit coastal and deeper waters. Detailed species entries, photographs, videos, calls, distribution maps and search-by-country functionality enable quick identification, making this app the go-to field tool for students, scientists and all nature lovers. Now with improved location data functionality and new Smart search parameters. FEATURES INCLUDE: • Covers all 537 southern African mammal species • Detailed species descriptions offer insight into key ID points and typical behaviour • Calls and videos of mammals in their natural environments • More than 3700 photographs and illustrations, including animal-to-human size comparisons • Easily identify mammals by their tracks or droppings • Improved Location data functionality • New Smart Search filters – search by activity, habitat, track length, track shape and dropping shape • The most recent research and taxonomy • Keep track of your sightings in a Life List • Search by country • Compare two species side by side • Search and sort by English, Afrikaans, French, German or scientific names JOIN OUR GROWING COMMUNITY If you’ve got a few comments or great suggestions to share, we’d love to hear from you at www.mydigitalearth.com ADDITIONAL NOTES * Uninstalling/reinstalling the app will result in the loss of your list. We recommend that you keep a backup from the application (My List > Export).
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
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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.
