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.
Your day has a shape
$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.
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 Sloww: Sun & Moon Phase Clock: map the core Weather 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: Weather apps often have inaccurate forecasts.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Many users find weather apps cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Push notifications can be overwhelming.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Ads can disrupt the user experience.
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.
Your day has a shape. Sloww shows it to you. Instead of hours and minutes, Sloww draws your whole day as a 24-hour clock. Where the sun is right now, when twilight starts, what the moon is doing. It's a different way to see time: slower, wider, and grounded in the sky above you. DESIGNED FOR PRIVACY Your location is used only for astronomical calculations and never leaves your device. No analytics. No ads. No tracking. No subscriptions. One purchase, everything included. SUN RING & TWILIGHT A golden arc traces your daylight from sunrise to sunset. Around it, colored bands show the three stages of twilight and golden hour. You can see at a glance how much light is left, when dusk begins, and how your day changes with the seasons. MOON RING & PHASE An inner ring tracks the moon across your sky. The icon shows tonight's phase, whether full, crescent, or new. Moonrise and moonset times appear in the readout below. LUNAR CYCLE & YEAR RING Two delicate rings track the 29.5-day lunar cycle and the year's progress. Solstices, equinoxes, and where you are right now, all at a glance. BREATHING EXERCISES The innermost ring guides calming breathing patterns: box breathing, coherent breathing, 4-7-8 relaxation, and extended exhale. A small moment of stillness, whenever you need it. APPLE WATCH The full Sloww clock comes to your wrist — the same sun, moon, and twilight rings, drawn from your watch's own location, with Always-On so the sky stays glanceable. Two complications bring it to your watch face, too: Sloww Sun shows the sun's arc through the day and the next light event; Sloww Moon shows tonight's phase with moonrise and moonset. Four families each, from corner to rectangular. NIGHT MODE After sunset, the clock warms to a dark palette that preserves your dark-adapted eyes. An optional mono-red mode keeps your night vision fully intact. CELESTIAL BELLS A gentle vibration or notification at sunrise, sunset, golden hour, moonrise, and more. Per-event escalation and configurable lead times. SUNSET LIVE ACTIVITY A lock screen countdown from golden hour through civil twilight, with a segmented progress bar and phase labels. ASK SIRI Ask about sunrise, sunset, moon phase, or the shape of your day. Seventeen voice intents in a warm, literary register. Also available in the Shortcuts app. SAVED LOCATIONS Search any city or enter exact coordinates. Bookmark your favorites and see what daylight looks like on the other side of the world. The clock works beautifully at every latitude, from the equator to the midnight sun. MADE FOR IPAD A native iPad layout lets the clock grow to fill the screen. Landscape places the clock and readout side by side, with pointer and trackpad support throughout. WIDGETS Three Home Screen sizes, five Lock Screen widgets, and three StandBy widgets for bedside viewing. Sunrise, sunset, moon phase, daylight remaining, and more. Always a glance away. READOUT Below the clock, a rich readout shows sunrise, sunset, moonrise, moonset, day length, and more. Tap to cycle through display formats: 12-hour, 24-hour, spoken time, and period of day. CUSTOMIZATION Four color palettes in light and dark modes. Colorblind-safe filters for red-green and blue-yellow vision. VoiceOver support with full clock descriptions and spoken labels on every control.
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.