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.
Sex is part of life
$0.99 · 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 Kairos - Intimacy Tracker: 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 may find it difficult to consistently log entries.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited insights and analytics could lead to user disengagement.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Users may want more customization options for their profiles.
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.
Sex is part of life. It affects mood, relationships, confidence, stress, sleep, and how connected you feel — but most of us do not track it with the same care we give workouts, food, or sleep. Kairos makes intimacy tracking feel normal, private, and a little more human. Use Kairos to log desire, mood, solo time, partnered intimacy, symptoms, energy, notes, and context. Over time, those small check-ins become patterns you can actually use: what boosts desire, what gets in the way, when connection feels easier, and what your body may be trying to tell you. WHAT YOU CAN TRACK • Libido and desire over time • Solo and partnered experiences • Mood before and after intimacy • Energy, sleep, workouts, symptoms, protection, duration, and notes • Relationship connection and timing • Custom fields that fit your real life WHY IT HELPS • Notice patterns without guessing • Talk with a partner with less pressure • Understand your rhythm instead of judging it • Keep a private record of your sexual wellness • Bring better context to care conversations if you choose PRIVATE BY DESIGN • Your data is stored locally on your device • iCloud sync uses your private iCloud database • No third-party analytics • No ad tracking • No social feed • No selling intimate data • Permissions are requested only when needed Kairos is built for adults who want to be honest about intimacy without making it weird. Track what matters, skip what does not, and keep your private life private.
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.