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.
Master organic chemistry with the only interactive puzzle game designed for understanding chair conformations
$0.99 · 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 Chairs! Organic Chemistry Game: map the core Education 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: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
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.
Master organic chemistry with the only interactive puzzle game designed for understanding chair conformations. Awarded “top chemistry app” by the Royal Society of Chemistry and 2016 finalist for the SXSW LaunchEDU award. Success in organic chemistry courses and on exams such as the MCAT, GRE or DAT requires learning to think visually. Hands-on practice is critical to success. Memorizing terms and formulas might get you through general chemistry, but may lead to failure in organic chemistry. Chair conformations, called ring flips, offer great exercises in spatial reasoning, which is key for mastering organic chemistry. Yet hand drawing these cyclohexane chair forms can be tricky. We created this game to prove organic chemistry can be visual, tactile and, yes, entertaining. This visual pattern puzzle game provides a fun and fast method for mastering chair (or cyclohexane) ring flips. Chairs! takes the mystery out of ring flips by offering instant feedback. During game play, as levels increase, so too does the complexity of these organic chemistry puzzles against the clock. There's no need to understand organic chemistry to play. With over 13 challenging levels, we will help you master this tough concept with ease. Recommended by professors at the University of Minnesota, University of Michigan, University of Edinburgh, and others. Awards SXSW LaunchEDU Finalist, 2016 Digital Innovation in Learning Award, 2015 Milken-Penn GSE Education Business Plan Competition Finalist 2017 Reimagine EDU Shortlist 2015, 2016 Chairs! named top mobile app by Royal Society of Chemistry
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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.