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.
WomanLog is a menstrual and fertility calendar for women.
$4.99 · 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.
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Combine features and design from your favorite apps.
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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 WomanLog Pro Calendar: map the core Health & Fitness 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 find the interface cluttered and difficult to navigate.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of customization options for symptoms and notes.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent data syncing across devices.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited integration with other health apps.
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.
WomanLog is a menstrual and fertility calendar for women. WomanLog Period Calendar and Tracker is an excellent choice to track your menstrual cycle and your period. Extremely reliable. Very helpful. Easy to use. The WomanLog app offers great features to track your cycle and period. Key features: * Period tracker for both regular and irregular cycle. * Period, fertility and ovulation forecast. Standard and advanced mode (on the basis of the previous cycle data and depending on the fluctuations of the cycle length during the previous months). * Over 100 symptoms, other options like weight, BBT, moods, pills, sex life, cervical mucus, graphs and much more. * Various daily reminders: Menstruation, Ovulation, Weight, BBT, Multivitamin pill, Breast self-exam, Contraceptive pill, NuvaRing, Contraceptive patch, Depo-Provera injection, IUD. * Sharing data with your partner and data sync between multiple devices. * Apple Health App support: Allows to read/write Weight and Basal Body Temperature data, Menstruation, Sexual Activity, Spotting, etc. * Apple Watch support More options: Password protection Pregnancy mode Tracking multiple calendars WomanLog Pro: Cervical mucus monitoring Cycle Overview (Send PDF file to an e-mail) Note + Event time + Reminder Moon phases Ovulation test Pregnancy test Blood pressure/Pulse Skins (30) No ads SUBSCRIPTION INFORMATION Additional features provided by Intelligent Assistant (available from iOS 11.2): * Much more detailed forecast of the first day of menstruation. More variants with probabilities when your period might start. * You will see the probability percentage of your fertile days. This will allow you plan much better or to prevent pregnancy. • Payment will be charged to your iTunes Account when purchase is confirmed. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of current period, at the same price of your initial purchase. • Once purchased, auto-renewal may be turned off by going to your Account Settings. • Any unused portion of the free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. Terms of use: https://www.womanlog.com/terms_of_use Privacy Policy: https://www.womanlog.com/privacy_policy contacts: [email protected] www.womanlog.com © 2025
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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.