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.
The comprehensive bird ID app published by Kosmos with over 1000 drawings and detailed written descriptions.
$6.99 · 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 Birds of Europe Guide: 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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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 information on bird species compared to other guides.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent user interface and navigation issues.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of offline access for content.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited search functionality.
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.
The comprehensive bird ID app published by Kosmos with over 1000 drawings and detailed written descriptions. Encyclopedic information - Over 470 European species of bird from the North Cape to Sicilly with detailed information on identifying characteristics, habitats, distribution and breeding behaviors. - More than 1000 illustrations of the most important male, female, juvenile, full and basic plumages as well as typical flight silhouettes. - The latest systematic findings incorporated and exclusive with species such as rhea, Chilean flamingo and the Yellow-headed amazon otherwise not shown anywhere else - Distribution maps and phenological charts for all species Multimedia: birdcalls and movies - Over 600 superb recordings of calls, songs and instrumental sounds - Movies of 130 species from the Bergmann and Englaender archive with dubbed original sound recordings Easy identification and certain recognition - Identify birds even more easily with the intuitive ID filter by size, color, location, habitat and time of year - Arrows indicating the most important features and zoomable images - Accurate illustrations and up-to-date identification texts make it possible for you to distinguish between similar species The experts - Ornithologist and Kosmos author Felix Weiss has studied almost all of the species described in the field and provided scientific support for the development of this app. - The illustrator and nature artist Paschalis Dougalis is one of the best bird illustrators of Europe. ***** Questions or suggestions for improvements: Mail to [email protected] We are looking forward to your feedback! For more information on news and updates: www.usmgames.com or visit us on www.facebook.com/UnitedSoftMedia and twitter.com/USM_News *****
Written user reviews are not shown here. Check current App Store reviews >
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.