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.
► KING OF THE CASTLE
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 TDS - Tower Destiny Survive: map the core Games 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: In-app purchases can feel predatory.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Some users report difficulty in earning in-game currency.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Ads can interrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of tutorials for new players.
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.
► KING OF THE CASTLE Well technically it’s a tower, but still. It’s yours, as long as you can keep the zombies away from it in this tower defense strategy game. It appears the zombie apocalypse is upon us based on how many of them are roaming the streets, so keep your gun nearby as you work to build your tower and keep it moving despite the waves of zombies. ► CONSTRUCT AND DEFEND To build your tower, you’ll need to collect different blocks as you travel, which you can then assemble to form your fortress. Within each of the levels you can add different weapons that will help keep you safe and on the go despite the masses of zombies that are trying to get in to eat your brains. Be careful, once your defenses are breached, you’re as good as dead so keep building and moving! ● Ready, aim, fire – It’s a zombie tsunami! This RPG shooter will keep you busy blasting zombies as you work to build and protect your mobile castle. Wage war on the undead to avoid becoming one with them. Collect new and exciting weapons along the way, and make sure you upgrade them so that your shooter skills remain top notch. ● Strategize – Use strategy to plow through your enemies as you roam in search of blocks to add to your tower. While there may be a lot of idle game play and zombie shooting, you will need to plan ahead and think about how and where you want to add weapons and more to your fortress. You’ll need all the guns and protection you can find as you advance through the levels and encounter more and more enemies! ● Level up – Progress through levels in this tower defense RPG, and gain access to more exciting upgrades, weapons, tower parts, and more! The Earth is your oyster if you can remain a survivor and avoid becoming zombified, so fight for your life and keep exploring. ● So lively – The graphics, not the zombies. Dive into this world of vibrant and cute characters and delightful animations that really bring everything to life. Who knew fighting off zombie waves could be so adorable? Even as you work to come up with the winning strategy you’ll be able to relax and have some fun thanks to the chill vibes. ► LAND OF THE LIVING DEAD So come on then, survivor, build your tower and wage war on the zombies in this fun and engaging strategy shooter game! Use your tower to travel across the lands as you explore and take out enemies, and have fun customizing all the different levels with neat guns and other weapons that will help you in your fight against the undead. Download Tower Destiny Survive today to test your survival skills now!
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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.