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.
iBird Yard Plus Guide to Birds has 270 species of North America
$2.99 · 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 iBird Yard+ Guide to Birds: 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 bird identification accuracy due to user-submitted data.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchase confusion among users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Buggy offline mode that hinders usability.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of community features for sharing sightings.
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.
iBird Yard Plus Guide to Birds has 270 species of North America. It is designed specifically for the 126 species of garden and yard birds found in North America and Hawaii and an additional 144 species of common birds most birders are likely to see such as ducks, hawks, seabirds, etc. If you are new to birding, iBird Yard Plus is an inexpensive way to become intimate with these amazing creatures. Just set up a small bird feeder in your yard and start discovering the beautiful species that thrive in your area. iBird Yard Plus is completely up to date with the 2017 AOU supplement and contains hundreds of bird songs and calls you can play from the app to attract birds to your feeders. Birders with more experience may want to review our iBird Plus, Pro and Ultimate products. More Details of What’s New: bit.ly/ibird-whatsnew iBird Yard Plus also takes a major leap forward with “Time of Day” filtering available in version 10.06. You can now search for birds by activity levels during day or night (Cathemeral), dawn and dusk (Crepuscular), during the day (Diurnal) or during the night (Nocturnal). Also included in this version is our new Owls of Mexico and Central America package, including all the hard to find details which iBird is so well known for: illustrations with field marks, range maps, songs and calls and much more. With iBird’s Percevia™ matching system you can search for birds by color, location, shape, habitat or any one of 37 identification attributes to find your bird. iBird's comprehensive species pages have hundreds of built-in bird song recordings, professional high-resolution bird photographs, hand-drawn composite illustrations and range maps with detailed migration paths. ** NOTE: If you would like to try out iBird without spending any money, check the newly released iBird LITE Free Guide to Birds of North America. It contains all the features of paid iBird Ultimate, including BAM, but contains just 50 species. And it’s completely FREE. ** Whether you are an experienced birder or a beginner, iBird Yard Plus is the best way to learn all about the birds in your garden. Features ■ iBird now takes advantage of the high-resolution retina displays of the iPhone and iPad so the screen shows more information than ever. ■ Birds Around Me and Percevia smart search now available as in-app purchases. ■ Contains the latest 2017 AOU checklists. ■ Splits-History lets you see what birds have had name changes, have been split into more than one species or lumped into one species. ■ iBird’s icon-driven visual search engine, enables you to identify birds using shape, color, location, habitat, head pattern, flight pattern, bill shape, length and more. ■ Voluminous identification and hard-to-find details such as diet, nest information, egg color, sex of incubator, vocalization definitions, and more. ■ The only birding app that includes both Illustrations and Photos. ■ The powerful search engine means no longer scrolling through hundreds of the wrong choices. iBird matches just those birds near you that fit your description. ■ Many hours of highest quality bird sound recordings. ■ Sort birds by first, last and family name and view birds by text, icon, thumbnail or gallery. ■ Search by common name, Latin name and even band code. ■ Only app with a field mark layer which displays key ID marks for male, female, juvenile. ■ Post, keep lists, and share sightings with friends and followers with an easy and user-friendly Notes and Favorites interface. ■ iBird’s database is completely self-contained; no internet connection is required like many other birding apps. Other Features ■ All new range maps now include Summer, Winter, Spring and Fall ranges plus Year-round and Migration ranges. ■ The Conservation Status search attribute lets you filter birds by 6 threat levels. ■ Species, common and family names in English, French and Spanish (text is English).
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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.