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.
App Overview
NIHSS Calculator
NIHSS Calculator is a fast, accurate, and beautifully designed NIH Stroke Scale scoring tool, built for neurologists, stroke physicians, emergency doctors, nursing staff, and medical students working in acute stroke care.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for NIHSS Calculator: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Incorporate gamification elements or reminders to improve engagement.
Assumption to check: Limited user engagement due to lack of interactive features
Validate with people who use this workflow before building.
Hypothesis 2
Implement a modern design with clean aesthetics and intuitive layouts.
Assumption to check: User interface may feel dated or cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Provide in-app tutorials or help sections to educate users.
Assumption to check: Lack of detailed guidance on using NIHSS
Validate with people who use this workflow before building.
Hypothesis 4
Clearly explain the benefits of in-app purchases and provide a free trial.
Assumption to check: In-app purchases might confuse users
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
NIHSS Calculator is a fast, accurate, and beautifully designed NIH Stroke Scale scoring tool, built for neurologists, stroke physicians, emergency doctors, nursing staff, and medical students working in acute stroke care. Designed by Dr Atif Elnil (MBBS MRCP, Stroke Unit St George's Hospital London UK), this app brings the complete 15-item NIHSS to your pocket with a clean, intuitive interface optimised for use at the bedside, in the emergency department, and on the stroke ward. WHAT'S INCLUDED All 15 NIHSS items scored in full: • 1a — Level of consciousness • 1b — LOC questions (month and age) • 1c — LOC commands (eyes and hand) • 2 — Best gaze • 3 — Visual fields • 4 — Facial palsy • 5a/5b — Motor arm (left and right, scored separately) • 6a/6b — Motor leg (left and right, scored separately) • 7 — Limb ataxia • 8 — Sensory • 9 — Best language (aphasia) • 10 — Dysarthria • 11 — Extinction and inattention INSTANT SEVERITY GRADING The total score updates in real time as you score each item, with immediate severity classification: • 0 — No stroke symptoms • 1–4 — Minor stroke • 5–10 — Moderate stroke • 11–15 — Moderate-severe stroke • 16–20 — Severe stroke • 21–42 — Very severe stroke DESIGNED FOR CLINICAL USE • Large, touch-friendly response buttons optimised for use with gloves or in a hurry • Progress indicator shows how many items have been scored • One-tap reset to start a new patient assessment • Works fully offline — no internet connection required • No login, no account, no data collected WHO IS THIS FOR? • Stroke physicians and neurologists • Emergency medicine doctors • Acute stroke nursing staff • Stroke specialist nurses and ANPs • Medical students on neurology and emergency placements • Paramedics and pre-hospital teams IMPORTANT NOTICE NIHSS Calculator is a clinical decision-support tool for use by qualified healthcare professionals. It does not recommend for or against thrombolysis or thrombectomy. All clinical decisions must be made by a qualified clinician using full clinical assessment and local guidelines. This application is intended for educational and informational purposes only. It is not a substitute for professional clinical judgment, local guidelines, or specialist advice. Always follow institutional protocols and consult appropriate medical professionals when making treatment decisions.
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Axios
React Navigation
React Native Paper
TypeScript
BUILD KIT DIFFICULTY
Starter
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.
