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.
Explore the final frontier with T-Minus – Space Launch Tracker
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.
Kit ready. Verify your email to download it.
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 T-Minus – Space Launch Tracker: map the core News 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: Limited offline access to articles and launches.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Push notifications can be overwhelming.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Cluttered user interface with too many features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchases can be confusing.
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.
Explore the final frontier with T-Minus – Space Launch Tracker. Keep up-to-date with every space agency's launches and events, including SpaceX, NASA, ULA, Rocket Lab, Roscosmos, Blue Origin, Arianespace, ISRO and more. With live streams and real-time information, you'll never miss a moment of the action. T-Minus is your one-stop destination for all things space launches and events. Download now and join the community of space enthusiasts. Key Features: ‣ Discover over 7000 past launches from SpaceX, ULA, Rocket Lab, Roscosmos, Blue Origin and more. ‣ Watch high definition videos and live streams right within the app, now with Picture-in-Picture.* ‣ Apple Watch app allows for an even more surreal experience with tracking and experiencing launches, with a compass that points you towards launch pads. ‣ Push Notifications 24 hours, 1 hour and 10 minutes before every launch so you'll never miss them ever again now with custom controls. ‣ Choose from a variety Widgets to see upcoming launches right on the Home Screen.* ‣ iOS 16 Lock Screen widgets now with a countdown timer.* ‣ Collect over 1500 Mission Patch Trading Cards, check-in daily to redeem yours and share them to Instagram, Facebook or Twitter. ‣ Booster & Dragon capsule reuse information for SpaceX missions. ‣ Follow the ISS with live tracking, rewatch all the missions all the way back to 1998, meet the Expedition Crew and more. ‣ Follow the Starbase activity in Boca Chica with up to date information and live streams. ‣ A catalog with hundreds of astronauts, launch vehicles, spacecrafts, space agencies and more. ‣ Smart searching and filters for accurate results to make sure you find exactly what you are looking for. ‣ "Launch Calendar" allows you to easily and quickly jump back and forth in time to discover launches. ‣ "On this day" section displays launches that happened on this day in the past 65 years. ‣ "Image of the Day" display the Astronomy Picture of the Day provided by NASA. ‣ Satellite maps of launch pads and locations. ‣ Upcoming Events. ‣ Up to 300 Upcoming Launches. ‣ Latest News, Blogs and Reports. ‣ Share News Articles to Instagram and Facebook Stories now with Templates. ‣ Bookmark articles and blog posts for future reference. ‣ Custom App Icons, Tint Colors, Map Styles, app-wide Themes & More. ‣ Midnight, Light and Dark themes. ‣ Quick access to a curated list of space documentaries and TV series. ‣ Much more. NOTE: This app is in no way affiliated with SpaceX, NASA or any other space company. If you enjoy the app please leave a review and share it with your friends! Feel free to send feedback in the Settings section of the app. * Picture-in-Picture is only available on iOS 14 and later. * Widgets are only available on iOS 14 and later. * Lock Screen widgets are only available on iOS 16 and later. * Some features require a Premium membership. T-Minus Premium subscriptions, either monthly or yearly, will automatically renew unless cancelled at least one day before the end of the current period. Payments will be charged to your Apple ID account at the confirmation of purchase. You can manage and cancel your subscription by going to your account settings in the App Store. Privacy Policy – https://tminusapp.com/privacy-policy.html Terms of Service – https://tminusapp.com/terms-of-service.html Thanks for using T-Minus! I'd love to hear your feedback. Email me at [email protected] or reach out on Twitter at @t_minus_app!
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.