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.
Keep track of which rabbits or cavies are due to have litters, which rabbit litters are due to wean or process, and increase the productivity of your animals with WhosDue
$9.99 · 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 WhosDue: map the core Productivity 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: Users often find it difficult to manage recurring tasks.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization options for notifications.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Some users report lag with syncing tasks across devices.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of integration with other calendars.
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.
Keep track of which rabbits or cavies are due to have litters, which rabbit litters are due to wean or process, and increase the productivity of your animals with WhosDue. WhosDue is a litter record keeping app that provides statistics to show you how your animals are performing in addition to keeping track of all of their litters. With WhosDue you can have all your breeding and litter record info with you wherever you are, and easily see who is producing well and who isn’t at any time without having to check cage cards, giving you the information you need to make decisions to make your rabbits or cavies more productive. Features: • See a list of who’s due to have a litter, which rabbits are due to be palpated, and which rabbit litters are due to be weaned or processed sorted by due date and grouped by Breed on the main screen. • Get a notification for rabbits that a nest box needs to be put in with the doe before the doe is due and another reminder the morning she is due. The number of days before the due date can be customized in the settings screen. • Get a notification when a rabbit is ready to palpate or a rabbit litter is ready to wean or process. Notifications can be turned on and off in the settings screen to customize which ones you get. • Get a notification for cavies that they are due at the beginning of the gestation range for cavies. • Quickly and easily see the survival rate or largest litter size of all animals of a breed ordered from highest to lowest. Tap a row to bring up the litter record for that animal to see the full details of all its litters. Easily toggle the view to show inactive rabbits and cavies or all rabbits and cavies instead of only active ones. • Breedings still due can be deleted or edited by swiping left on the litter tab of the main view. • Adding a breeding, updating results, or deleting a breeding automatically makes the change for both the buck and the doe. • View all the animals you have of a breed grouped by gender. Easily toggle the view to show inactive rabbits and cavies or all rabbits and cavies instead of only active ones. • Use the date calculator to find out when breedings need to be done to have each class of rabbit for a show. Just enter the date of the show and the dates are calculated for all classes. • Keep a list of all the miscellaneous rabbit and cavy related tasks you want to get done right in the app, and set a date time for a notification if you want a reminder. • Backup your data to iCloud and restore from iCloud to transfer your data between devices or to just keep a backup of your data. • Print a 3" x 5" cage card and 2 1/2" x 4" carrier card from the rabbit/cavy list. • Print a 3" x 5" cage card and 2 1/2" x 4" carrier card for a litter from the litter record. • Print a pedigree in portrait or landscape orientation including custom logos from the rabbit/cavy list. • Supports marking rabbits as Vienna Marked and Vienna Carriers. • See all of the active does currently available to breed and create rebreed reminders. • Supports dark mode.
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.