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.
Why 3D ECG Leads ?
$4.99 · 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 3D ECG Leads: map the core Medical 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 interactivity in 3D model manipulation.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of detailed explanations for lead placements.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Quiz feature lacks variety in question types.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited user feedback on 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.
Why 3D ECG Leads ? AN ECG LEAD PLACEMENT GUIDE Misplacement of the ECG Leads may lead to wrong diagnoses and further unnecessary investigations or treatments (Jowett et al., 2005; Toosi and Sochanski, 2008; Harrigan, Chan and Brady, 2012; Ilg and Lehmann, 2012; Lynch, 2014). In their study (Medani et al., 2018) showed that in only 34% of cases, the ECG Chest Leads were placed correctly. All medical personnel who are operating a 12 Lead ECG machine should have the appropriate training for ECG lead placement (Kligfield et al., 2007; Crawford and Doherty, 2010). The purpose of 3D ECG Leads is not aimed at replacing high-quality training but instead, to act as an aid and to show you in a simple 3D interactive way the Standard Lead Placement Technique. AN ECG LEADS VISUALISATION TOOL In a standard 12 Lead ECG Tracing, not all of the ECG Leads are organized in anatomical order. One recent study (Lindow et al., 2019) highlights the fact that displaying all the 12 ECG Leads in an anatomical sequence has a positive impact in diagnosing Acute Myocardial Infarction. 3D ECG Leads serves as a 3D interactive tool for the anatomical visualization of the ECG Leads. WHY ONLY 10 LEADS. HOW AN ECG LEAD IS GENERATED. With 3D ECG Leads you can visualize how the ECG Machine reads the heart's electrical activity, and how 3 Electrodes are generating 6 Leads. References Crawford, J. and Doherty, L. (2010) “Ten steps to recording a standard 12-lead ECG,” Practice Nursing, 21(12). doi: 10.12968/pnur.2010.21.12.622. Harrigan, R. A., Chan, T. C. and Brady, W. J. (2012) “Electrocardiographic electrode misplacement, misconnection, and artifact,” Journal of Emergency Medicine. Elsevier Ltd, 43(6). doi: 10.1016/j.jemermed.2012.02.024. Ilg, K. J. and Lehmann, M. H. (2012) “Importance of recognizing pseudo-septal infarction due to electrocardiographic lead misplacement,” American Journal of Medicine. Elsevier Inc., 125(1). doi: 10.1016/j.amjmed.2011.04.023. Jowett, N. I. et al. (2005) “Modified electrode placement must be recorded when performing 12-lead electrocardiograms,” Postgraduate Medical Journal, 81(952). doi: 10.1136/pgmj.2004.021204. Kligfield, P. et al. (2007) “Recommendations for the Standardization and Interpretation of the Electrocardiogram: Part I: The Electrocardiogram and Its Technology A Scientific Statement From the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Clin,” Journal of the American College of Cardiology. Elsevier, 49(10). doi: 10.1016/J.JACC.2007.01.024. Lindow, T. et al. (2019) “Why complicate an important task? An orderly display of the limb leads in the 12-lead electrocardiogram and its implications for recognition of acute coronary syndrome,” BMC Cardiovascular Disorders. BMC Cardiovascular Disorders, 19(1). doi: 10.1186/s12872-018-0979-x. Lynch, R. (2014) “ECG lead misplacement: A brief review of limb lead misplacement,” African Journal of Emergency Medicine. African Federation for Emergency Medicine, 4(3). doi: 10.1016/j.afjem.2014.05.006. Medani, S. A. et al. (2018) “Accuracy in precordial ECG lead placement: Improving performance through a peer-led educational intervention,” Journal of Electrocardiology. Elsevier Inc., 51(1). doi: 10.1016/j.jelectrocard.2017.04.018. Toosi, M. S. and Sochanski, M. T. (2008) “False ST elevation in a modified 12-lead surface electrocardiogram,” Journal of Electrocardiology, 41(3). doi: 10.1016/j.jelectrocard.2007.11.004.
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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.