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.
*** Planning to go bird watching in Colombia? Then this is the app for you
$24.99 · 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 All Birds Colombia field 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 offline access to bird data
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: High price point may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of community features for birdwatchers
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inadequate search and filter options
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.
*** Planning to go bird watching in Colombia? Then this is the app for you. This app fills a gap in the region and is the only serious bird app available for Colombia. It is based on the renowned reference work of the Helm Guide Series "Birds of Northern South America" by Robin Restall, Clemencia Rodner, and Miguel Lentino. The creation of apps from the book is a co-production between Bloomsbury Plc. and Sunbird Images. The app contains 5,600 illustrations and more than 4,000 bird songs and calls in total. *** *** Dutch Birding Journal writes: "Would I recommend this app to anyone going on a birding trip to Colombia or one of the other countries in Northern South America? For sure! ..., you will be provided with a load of information, a nearly complete set of bird sounds and a few useful tools and features for use in the field for relatively low money." *** This app is part of the Sunbird Images BLUE LABEL series. Our BLUE LABEL series are top notch digital field guides which provide the most comprehensive data available for a region or taxon. They stand for completeness including even the very rare species and vagrants which have only been recorded once or a few times in a region. Even the rare species are illustrated and described in detail featured with a full species account. No other bird app for this region offers the following: - Includes all 1,889 Colombian bird species including all vagrants - 5,600 illustrations from the Helm Guide Series "Birds of Northern South America" - Covers all subspecies + geographic, age and sex variations - 4,054 bird songs and calls - Most advanced Compare Mode of any bird app - compare up to 16 species images / songs / maps - Spectrograms of all songs + details where songs were recorded - Introduction contains hints and links on bird watching in Colombia - Detailed distribution maps of Northern South America down to subspecies level - Create sighting lists on a map via GPS and sort by place, date, group, and name - Make notes for each bird spotted - A simple identification key narrows species down - Sort and display species: A–Z, 6 different languages, taxonomic Colombia is the “Land of Birds” with vast natural richness and a number of natural superlatives. With its nearly 1,900 species it covers about 20 % of the world's bird species population with 78 endemic species covered in this app. Choose between 6 bird name languages: English, Spanish, French, Dutch, German, Latin Narrow species down by foot colour, bill shape, tail length etc. leading to the bird searched for plus a choice of similar species. You can also look for fragments of a species name – the search for “finch“ shows all the species which include the word “finch“ in the species’ name. ***A graphically well-designed layout – easy to use with large lettering.*** "All Birds Colombia" is very well suited for keeping personalised bird watch lists. The app will continuously be developed further. All updates are free of charge. Once downloaded no internet connection needed – just download the app and start birding! Visit our internet support site for more information www.sunbird.tv. We are happy, if you like our app. Please don't hesitate to email us if you have any questions or suggestions or comments 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.