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.
**Excellent resource for ECG Criteria and Board Review!**
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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 ECGsource: 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 features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface is outdated
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent performance
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of user support/documentation
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.
**Excellent resource for ECG Criteria and Board Review!** ECGsource (from the developers of the CathSource and EchoSource Apps) is a supplemental application to ECGsource.com, the largest online educational resource for electrocardiograms. ECGsource has been developed for medical education and board review, and assists institutions in documenting trainee competency in electrocardiogram (ECG) interpretation. ECGsource for the iPhone/iPad provides the following resources: -> Full-List of Searchable ECG Diagnoses and Criteria -> Over 65 High-Resolution Sample ECG Images -> ECG Quiz (5-question demo of website's full content) -> ECG Video Tutorials for Beginners (over 50 minutes of tutorial videos) **ECG Criteria is an easily searchable rapid reference for more than 90 of the most common ECG diagnoses, including: Normal ECG, Incorrect Electrode Placement, Artifact, Atrial Enlargement, Sinus Rhythm, Sinus Arrhythmia, Bradycardia, Tachycardia, Sinus Arrest, Sinoatrial Exit Block, Atrial Premature Complexes, Atrial Tachycardia, Multifocal Atrial Tachycardia, Supraventricular Tachycardia, Atrial Flutter, Atrial Fibrillation, AV Junctional Rhythm/Tachycardia, Ventricular Premature Complexes, Ventricular Tachycardia, Accelerated Idioventricular Rhythm, Ventricular Fibrillation, AV Block, (1st Degree, 2nd Degree, and 3rd Degree), Wolff-Parkinson-White, AV Dissociation, Low Voltage, Axis Deviation, Electrical Alternans, Ventricular Hypertrophy, Complete and Incomplete Right Bundle Branch Block, Left Anterior Fascicular Block, Left Posterior Fascicular Block, Complete and Incomplete Left Bundle Branch Block, Non-specific Intraventricular Conduction Disturbance, Functional (Rate-Related) Aberrancy, Anterolateral Infarction (Age Recent or Probably Acute), Anterolateral Infarction (Age Indeterminate or Probably Old), Anterior or Anteroseptal Infarction (Age Recent or Probably Acute), Anterior or Anteroseptal Infarction (Age Indeterminate or Probably Old), Lateral Infarction (Age Recent or Probably Acute), Lateral Infarction (Age Indeterminate or Probably Old), Inferior Infarction (Age Recent or Probably Acute), Inferior Infarction (Age Indeterminate or Probably Old), Posterior Infarction (Age Recent or Probably Acute), Posterior Infarction (Age Indeterminate or Probably Old), Early Repolarization, Juvenile T Waves, Nonspecific ST and/or T Wave Abnormalities, ST and/or T Wave Abnormalities Suggesting Myocardial Ischemia, ST and/or T Wave Abnormalities Suggesting Myocardial Injury, ST and/or T Wave Abnormalities Suggesting Electrolyte Disturbances, ST and/or T wave Abnormalities Secondary to Hypertrophy, Prolonged Q-T Interval, Prominent U Waves, Digitalis Effect, Hyperkalemia, Hypokalemia, Hypercalcemia, Hypocalcemia, Secundum Atrial Septal Defect, Primum Atrial Septal Defect, Dextrocardia, Chronic Lung Disease, Acute Cor Pulmonale Including Pulmonary Embolism, Pericardial Effusion, Acute Pericarditis, Hypertrophic Cardiomyopathy, Central Nervous System Disorder, Myxedema, Hypothermia, Sick Sinus Syndrome, Brugada Syndrome, Ebstein's Anomaly, Atrial or Coronary Sinus Pacing, Ventricular Demand Pacemaker (VVI), Dual Chamber Pacemaker (DDD), and Pacemaker Malfunction.** **ECG Video Tutorial section includes over 50 minutes of video tutorials designed to assist beginners learning electrocardiogram interpretation. Tutorial topics include Understanding the Cardiac Conduction System, Understanding the Limb and Precordial Leads, Determining ECG Rate and Axis, Left Ventricular Hypertrophy, Bundle Branch Blocks, and ST-Segment Elevation.** Visit us online at ECGsource.com for more information.
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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.