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.
STEP UP TO THE PLATE
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Evidence scope: #67 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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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 Backyard Baseball '01: 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: Limited character customization for players
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Repetitive gameplay mechanics
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inadequate tutorials for new players
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of multiplayer 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.
STEP UP TO THE PLATE Relive the second baseball game in the Backyard Sports franchise, now enhanced to run on iOS. Whether you're picking your dream team, playing a pick-up game, or diving into a full season, step up to the plate and experience the game that made baseball fun for everyone! Backyard Baseball ‘01 teams up the Backyard kids with Backyardified MLB legends. Create your own Backyard team, customize your uniforms, and strategize to win the Championship. Play a single pick-up game or play through an entire season. Backyard Baseball ‘01 features intuitive controls for all ages! SWING BACK INTO BASEBALL Enjoy baseball like it’s 2001! 30 Charming Backyard kids Legendary MLB Players MLB Team Marks Hilarious Bloopers 8 Classic Ballparks 9 Pitching Power-ups and 4 batting Power-ups Lively commentary from Sunny Day and Vinnie To get into the swing of things, choose a batter and face Mr. Clanky for some batting practice. This is where you’ll learn just when to click to make your chosen batter hit the ball! THE GOAT RETURNS Play with the legend himself, Pablo Sanchez. Build a roster from a cast of 30 hilarious child athletes and 28 legendary pros that made Backyard Baseball ‘01 a sports classic. Returning MLB players include Derek Jeter, Alex Rodriguez, Cal Ripken Jr., Sammy Sosa, Mike Piazza, Randy Johnson, Nomar Garciaparra, Jeff Bagwell, Jason Giambi, Chipper Jones, Jeromy Burnitz, Mark McGwire, Shawn Green, Vladimir Guerrero, Kenny Lofton, Jason Kendall, Barry Larkin, Marty Cordova, Mo Vaughn, Raul Mondesi, Curt Schilling, Alex Gonzalez, Juan Gonzalez, Larry Walker, Carlos Beltran, Tony Gwynn, Ivan Rodriguez, and Jose Canseco. Game Modes include: Choose from three modes of play (Easy Mode, Medium Mode, Hard Mode) Random Pick-up: A quick way to jump right in! The computer chooses a random team for you and itself and the game starts immediately. Single Game: You take turns with the computer choosing players from a random pool of characters. Season: You pick your home field, create a team, and manage the team through a 14 game series. The opposing teams are computer generated. At the end of the season, the best two teams advance to the BBL playoffs (best of 3). If you keep winning, you’ll compete in the Super Entire Nation Tournament and Ultra Grand Championship of the Universe Series! ADDITIONAL INFORMATION At our core, we are fans first – not just of video games, but of the Backyard Sports franchise. Fans have asked for accessible and legal ways to play their original Backyard titles for years, and we are excited to deliver. Without having access to the source code, there are hard limitations on the experience we can create. As an example, we can’t use the original 32bit code to support modern macOS, as even with an incredibly clever wrapper, macOS can’t execute the binaries. Backyard Baseball ‘01 runs well, looks better than ever, includes new bonus features to test your mettle, and creates a new installation for digital preservation within the Backyard Sports catalog that allows the next generation of fans to fall in love with the game.
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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.