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.
Cubtale is an all-in-one pregnancy and baby tracking app built for families who want one continuous system from pregnancy through babyhood.
Free · 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 Cubtale: Pregnancy & Baby: map the core Medical workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Cubtale is an all-in-one pregnancy and baby tracking app built for families who want one continuous system from pregnancy through babyhood. Track pregnancy week by week, log feeding and sleep, monitor growth, manage routines, sync caregivers, and preserve memories - all in one app. No switching after birth. Pregnancy Structured tools for every trimester. Development • Week-by-week baby updates • Baby size comparisons • Due date tracking Monitoring • Kick counter • Contraction timer • Weight tracking • Symptom logs • Appointment and test reminders • Visit notes Pregnancy Memories • Weekly photos • Milestones • Personal notes • Timeline view Baby Continue seamlessly after delivery. Feeding • Breastfeeding logs (side, duration) • Bottle feeding • Pumping sessions • Solid food tracking • Custom reminders Sleep and Care • Sleep sessions • Diaper logs • Daily summaries • Pattern charts Growth and Health • Weight tracking • WHO growth percentiles • Milestones • Vaccination logs Breastmilk Inventory Management Advanced milk stash tracking built for pumping families. • Track exact quantities • Log pump date and time • Manage multiple stash locations • Automatic expiration tracking • FIFO rotation guidance • Track thawed milk deadlines Numbered Milk Bags • Assign unique numbers to each bag • Locate specific bags instantly • Know exactly which bag to use next • Maintain accurate freezer totals Smart Milk Labels • Scan QR labels to log milk instantly • Link each bag to quantity, date, and location • Reduce manual entry errors Milk usage and inventory stay aligned. Smart and Connected • Apple Watch logging • Real-time sync across devices • Custom notifications • Cub integrations • Smart Milk Label integration • Customizable dashboard • Dark mode Fast logging. Connected tracking. Family Sharing Built for shared parenting. • Add parents, grandparents, caregivers • Real-time updates • Multiple child profiles • Export logs for pediatricians Everyone sees the same data. No duplicate tracking. Memories • Pregnancy timeline • Baby milestones • Monthly photos • Important dates One continuous record from pregnancy to babyhood. Cubtale combines pregnancy tracking, baby tracking, advanced milk inventory management, smart integrations, and family coordination in one app designed to grow with your family. One app. From pregnancy to baby. Built for families.
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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: Parents struggle with tracking multiple aspects of baby care in one app
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in visualizing growth progress over time
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases can be confusing for users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited social sharing features
Validate with people who use this workflow before building.
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.