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
OmniMedix Medical Calculator
Rated 5 stars by nurses and medics alike! Here's what people are saying:
$7.99 · In-app purchases
PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
14 ratings · Top 30%
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 included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 OmniMedix Medical 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
Offer a wider range of calculators and allow user submissions.
Assumption to check: Limited number of calculators compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Improve UI/UX design for better navigation and readability.
Assumption to check: User interface can feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline access for calculators and user data.
Assumption to check: No offline functionality available.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the payment process with clearer prompts and information.
Assumption to check: In-app purchase process can be confusing.
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
Rated 5 stars by nurses and medics alike! Here's what people are saying: Chelsea says: This app is perfect for anyone in the medical field! I'll definitely be using this during my nursing clinicals! Best $4.99 I've spent in a while! Minifireguy says: "Easy app to use when on the medic. Easy to open up and get calcs fast. Great app OmniMedix was created by a practicing street medic with simple design that allows the user to calculate the proper medication infusion rate within seconds instead of fumbling through endless menus. Agency protocols are different and medications in EMS come and go. OmniMedix is the only calculator based on infusion rates, not specific medications, which allows it to be used with virtually any medication. This allows it the versatility to be used in all clinical environments: EMS, Emergency Department, ICU, medical offices and even veterinary medicine. Also included are weight and temperature conversions, common pediatric calculations, medication bolus calculations, and the Parkland Burn Formula for fluid resuscitation. While most hospital units have IV pumps that take care of the drip rate, most EMS crews don’t, and are either left to calculate drips by hand or "titrate to effect". Even if you have the luxury of an IV pump, can you quickly and accurately calculate the correct drip rate by hand if your pump fails? Your patient’s life may depend on it! This app is a must have for anyone who administers IV medications, and is designed with those who rarely calculate drip rates in mind. Directions for use: Select the concentration being utilized (mcg/min, mcg/kg/min, etc) to enter its menu. Enter the patient’s weight, the desired dose, medication concentration, and dripset being used. OmniMedix will display the proper flow rate in drops per minute, drops per second, and our proprietary “seconds per drop”, to simplify slower drip rates. Check out our YouTube video (search OmniMedix) for a full demo of the app. Content created by: Cody Blount, BS, NREMT-P, FP-C Send feedback to: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
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
Supabase
@supabase/supabase-js
react-native-paper
expo-router
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.
