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.
northern lights tracker: your guide to the aurora borealis
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 Aurora Alerts, Northern Lights: 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: Inaccurate location-based alerts.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization options for notifications.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Cluttered UI with too much information.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No offline functionality.
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.
northern lights tracker: your guide to the aurora borealis experience the magic of the northern lights like never before. with northern lights tracker, you get real-time aurora activity, accurate forecasts, and personalized alerts — all in one beautifully designed app. whether you're planning a quick outing or an aurora-hunting trip, this app puts the power of space weather in your hands. key features: *real-time aurora activity – stay updated with live kp index, visibility chances, and aurora strength at your location. *cloud coverage & visibility alerts – know when the skies are clear and conditions are ideal for viewing. *interactive graphs – explore visual data for kp index, solar wind, cloud cover, and more to plan the perfect viewing moment. *solar data – see the latest sun images, solar flares, and geomagnetic activity that drive the auroras. *custom notifications – get alerts based on your chosen kp level, location, and weather preferences. set your rules. watch the skies. capture the wonder. *********** premium access to access all the premium features and content, you need to subscribe or pay once for lifetime access. the cost of the purchase is charged to your itunes account. subscriptions automatically renew and are billed at the rate and period you choose based on your subscription plan. user accounts are charged for auto-renewal within 24-hours prior to the end of the current period. subscriptions may be managed and auto-renewal may be turned off in itunes account settings after purchase. any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. privacy policy: https://sergei-mobile.com/policy.html terms of use: https://sergei-mobile.com/eula.html
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.