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
ULTIMATE Mare Manager
A must-have for any horse owner who breeds!! This amazing app will put all of your mares’ annual breeding records right at your fingertips, and with the click of a button! Enter your mares’ last heat to track heat cyc...
$18.99 · In-app purchases
PRICE
$18.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
Preview a sample Build Kit No email needed
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 ULTIMATE Mare Manager: map the core Business 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
Incorporate push notifications for breeding schedules.
Assumption to check: Lack of user engagement features such as reminders or notifications.
Validate with people who use this workflow before building.
Hypothesis 2
Implement graphs and charts for analyzing breeding data.
Assumption to check: Poor data visualization for breeding history.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize mare profiles with photos and notes.
Assumption to check: Limited user customization options.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a free trial or freemium model to attract users.
Assumption to check: High cost may deter users.
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
A must-have for any horse owner who breeds!! This amazing app will put all of your mares’ annual breeding records right at your fingertips, and with the click of a button! Enter your mares’ last heat to track heat cycles, enter breeding dates to track next tease or palpation by vet as well as calculate potential due dates…. and save stallion info for each mare too. The app will automatically calculate important dates for you, as well as create events/reminders so you never miss an upcoming need! Enter a countless number of mares, with detailed records AND photos, and they will all be organized in a user-friendly and alphabetized list. Also includes a search function to help you easily find pertinent information. If you breed one mare or a hundred mares annually, this app will save you time and stress while keeping beautifully organized breeding files for ALL of your precious mares AND client mares! SUBSCRIPTION DETAILS • Annual Full Access — $18.99/year Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple ID Account Settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mare-manager.replit.app/privacy
Written user reviews are not shown here. Check current App Store reviews >
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
React Navigation
Async Storage
Axios
TypeScript
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.
