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
Renal Dose: Adjust Antibiotics
Do you have doubts when correcting the dose of antibiotics for your patient's kidney function?
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
4 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 included16 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 Renal Dose: Adjust Antibiotics: 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
Include a broader range of antibiotics and customizable entries.
Assumption to check: Limited antibiotic database for dosing.
Validate with people who use this workflow before building.
Hypothesis 2
Implement guided tours and tooltips for first-time users.
Assumption to check: User interface can be confusing for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to access basic features offline.
Assumption to check: No offline functionality.
Validate with people who use this workflow before building.
Hypothesis 4
Add functionality to save and track patient history and previous calculations.
Assumption to check: Lack of patient history tracking.
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
Do you have doubts when correcting the dose of antibiotics for your patient's kidney function? If the answer is YES, then this app is made for you. As we know, it is extremely important to correct the medications dosage based on the patient's renal function as it is possible to avoid many of the drugs side effects. Thus, it is necessary to calculate the patient's GFR and then look for updated and reliable tables that allow this correction. This is not always done quickly and easily. With that in mind, the SmartMedic company developed the Renal Dose application. Through it, you can use the calculator of your choice to calculate the patient’s renal function (CKD-EPI, Cockcroft-Gault or MDRD) and then have access to medications with doses already corrected by creatinine clearance, enabling agility and safety at the time of prescription. The application has correction for the renal function of antibiotics, antifungals, antivirals and antiepileptic drugs. This app is the ONLY one that allows you to take the medication dosage already calculated by the creatinine clearance. Don't waste time, download the Renal Dose app and simplify your prescription. **The app is available in English, Portuguese and Spanish. Disclaimer: this app was designed only for medical professionals, not suitable for others that should seek a doctor’s advice before making any medical decisions. The app is not a substitute for clinical or physician reasoning.
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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
FastAPI
Axios
React Navigation
Zustand
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.
