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.
Discover the magic of perfect skylight with Helios - your essential companion for capturing stunning outdoor photos and videos
$5.99 · 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 Helios - Golden Hour Forecast: map the core Photo & Video 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 it hard to add multiple locations.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Some users report inaccurate golden hour times.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization options for notifications.
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.
Discover the magic of perfect skylight with Helios - your essential companion for capturing stunning outdoor photos and videos. Whether you're a professional photographer, an avid hiker, a traveler seeking the perfect shot, or just someone who loves taking photos with your phone, Helios helps you find those magical moments when natural light transforms the ordinary into the extraordinary. WHAT ARE MAGIC HOURS? The golden hour casts a warm, glowing light shortly after sunrise or before sunset, perfect for portraits and landscapes. The blue hour bathes everything in a serene, twilight blue just before sunrise or after sunset, ideal for moody and atmospheric shots. These magic hours are when your photography truly shines, and Helios makes sure you never miss them. The app works anywhere in the world, even without an internet connection, making it an indispensable tool for anyone who cares about lighting. BEAUTIFUL DESIGN Helios embraces modern design with its refined liquid glass aesthetic that feels right at home on your iPhone, iPad, Apple Watch and Mac. The interface is intuitive and elegant, featuring a sophisticated dark theme that's easy on the eyes while planning your shoots. Every detail has been carefully crafted to make exploring light and time as beautiful as the moments you're planning to capture. EVERYTHING YOU NEED Helios brings together everything you need in one streamlined experience. The main screen shows you a complete outlook of today's sun and moon events with a stunning realistic visualization, alongside a built-in calendar for planning ahead. Your current location and all your saved places live together in one convenient view, so you can quickly check conditions anywhere you've bookmarked. The integrated Map Explorer lets you search for new locations and explore sun and moon positions anywhere in the world at any time. See exactly where the sun will rise or set, track golden hour and blue hour times, and plan your shoots with precision using detailed line-based visualizations. For real-time guidance, the Live View provides a spatial experience that overlays celestial information directly on your camera view, so you can track the sun and moon's path through the sky in augmented reality. The Light Meter tool helps you nail the perfect exposure with detailed information right alongside your camera feed. When you're checking out the outlook for a place, you'll see helpful information cards including map views and Look Around (subject to availability), giving you a better sense of the place and helping you plan the perfect spot for your shot. Set up personalized notifications to stay informed about upcoming magic hours, so you're always ready when the light is just right. TRUSTED BY THOUSANDS With over 50,000 downloads and a 4.7 average rating worldwide, Helios has been featured on the App Store Today page and recognized as one of the best iOS apps by TechnoBuffalo and Apple User. Join the community of photographers, travelers, and outdoor enthusiasts who rely on Helios to make the most of natural light. Helios is more than an app - it's your guide to mastering time and light, ensuring you're always in the right place at the right moment.
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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.