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
Wild Berries and Herbs 2 PRO
The ultimate FIELD GUIDE to Wild Berries, Fruits and Herbs of Europe and North America, all in the palm of your hand!
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
29 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 included16 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 Wild Berries and Herbs 2 PRO: 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
Provide comprehensive data with community contributions.
Assumption to check: Limited plant information compared to online databases
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline access for saved plants.
Assumption to check: No offline mode for browsing plants
Validate with people who use this workflow before building.
Hypothesis 3
Add comparison feature for similar plants.
Assumption to check: Hard to identify similar-looking plants
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing and user reviews.
Assumption to check: Lack of user engagement features
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
The ultimate FIELD GUIDE to Wild Berries, Fruits and Herbs of Europe and North America, all in the palm of your hand! Finally, you have the option to identify species without the help of a heavy book. You get a comprehensive library full of facts, figures, and images. Learn where you can find certain species, learn if they are edible and how to prepare and cook them. Find inspiration and experience nature in a whole new way. Apps and books help to determine what species it is, but you are still unconfident? You now have the best chance to correctly determine the right species with the Online Species Consultation. Enthusiasts and Biologists from around the world will help identify what species it is. You discover a species or make a great snapshot?! With the sightings function you are organizing your discoveries on the road or at home! For each sighting, you can store comprehensive information, e.g. photo, time, GPS position and location. CONTENT * 180 species - 2000 images * Extensive description of the species * Species names in 12 languages * Scientific identification * Online Species Consultation * Capture and share sightings * Quiz game SEARCH AND IDENTIFY SPECIES BY * APPEARANCE - fruit, flower, leaf, tree, shrub, etc. * EDIBLE - toxic, edible, allergen, etc. * CATEGORY/TYPE - berry, stone fruit, apple fruit, nut, etc. * TIME - flowering, ripening, harvesting, etc. QUIZ GAME * Guess species from pictures * Learn to distinguish different species NATURE MOBILE on YouTube: http://www.youtube.com/naturemobile ABOUT NATURE MOBILE The mission of NATURE MOBILE is to present exciting topics from nature and other areas to a wide audience of interested people, enthusiasts, and experts in an attractive way. You are an author or photographer, you have fascinating ideas or content, please contact us at [email protected]. CHECK OUT MORE APPS BY NATURE MOBILE
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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
Zustand
React Navigation
React Native Reanimated
Axios
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.
