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.
Death is not the end.
$3.99 · In-app purchases
Evidence scope: #44 is the current overall US Paid chart position. 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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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 Dead Cells: 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: Some users report frustration with the game's difficulty spikes.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Players feel the inventory management is cumbersome.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited tutorial for new players
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of in-game communication features.
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.
Death is not the end. Play as a failed alchemic experiment and explore the sprawling, ever-changing castle to find out what happened on this gloomy island…! That is, assuming you’re able to fight your way past its keepers. Dead Cells is a roguevania action platformer that will require you to master frantic 2D combat with a wide variety of weapons and skills against merciless minions and boss. Kill. Die. Learn. Repeat. First available on PC and consoles, the indie hit Dead Cells is now slaying foes on mobile! Main Features • Roguevania: The progressive exploration of an interconnected world, with the replayability of a rogue-lite and the adrenaline-pumping threat of permadeath • Frantic and Dynamic 2D Action: Learn your enemies’ patterns to stay alive, or prepare to be sent back to your cell before you can say “baguette” • Nonlinear Progression: Unlock new levels with every death, opt for the path that suits your current build, your playstyle or just your mood. Surely, the ramparts can’t be as bad as the sewers, right? • Play at your own pace: Will you explore every nook and cranny of the castle, or rush to the end? *Latest updates are available: Clean Cut & The End is Near* RETURN TO CASTLEVANIA DLC Time for some vampire slaying • New storyline - overcome the Ruler of Darkness alongside Alucard and Richter Belmont, • 2 new biomes - Explore Dracula's Castle and its outskirts • 9 new monsters - Werewolves, haunted armors, and medusas are waiting for you • 14 new weapons - wield the Vampire Killer or the Holy Water to defeat creatures of the night, • 3 new bosses - go fangs to fangs against Death and Dracula himself • 20 new outfits - dress as your favorite Castlevania characters such as Simon and Richter Belmont or Alucard • Alternative soundtracks - play along 51 Castlevania original tracks and 12 tunes reimagined in the style of Dead Cells THE BAD SEED DLC You reap what you sow • New levels to lose your head in the not-so-peaceful Dilapidated Arboretum and the noxious Morass of the Banished • New monsters to rip to pieces: get to know the locals, such as the Jerkshroom and the Yeeter • New weapons to play with: trim sticking-out heads with the Scythe Claw, or make them dance to the sound of the Rhythm n' Bouzouki • New boss to fight against: Mama Tick is dying to meet you FATAL FALLS DLC Ready for a leap of faith? • 3 new biomes - Get some fresh air at the Fractured Shrines, splash around at the Undying Shores and take a picture at the Mausoleum • 8 new monsters - The Cold Blooded Guardians and their friends would love to teach you about their culture. ... Wait, aren't those relatives of yours in the Undying Shores...? • 7 new weapons - Lil' Serenade is perfect for breaking the ice with the locals, although the Snake Fangs would make for a perfect souvenir... • 1 new boss - The Scarecrow is very proud of his gardening skills and won't hesitate to show off QUEEN AND THE SEA DLC Take it to the sea! • 2 new biomes - Battle your way through a rotten shipwreck, or scale a burning lighthouse and confront your deadliest foe yet. • 9 new weapons, including a throwable shark, a trident and a pirate hook hand (eyepatch not included). • 2 new bosses - Don't lose your head before you meet the Queen! This DLC also gives you the usual extras: - A not-so-cute pet. - Loads of new outfits. - New enemies to bash. WARNING: Devices with less than 2 Gb of RAM may not be able to run this content correctly. We recommend not to take this DLC if your device is under 2gb of RAM. Carefully redesigned for mobile with a revamped interface • Two game modes available: Original & Auto-Hit • Custom controls & More touch controls options available: Change the buttons’ position and size to your liking, swipe to dodge… • MFi external controller support • No ads, no F2P mechanics! If you run into a problem, please contact us at [email protected] with as much information as possible on the issue.
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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.