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
EasyIV Infusion Calculator
EasyIV was developed to handle any IV infusion calculation, configured with a comprehensive list of units of measurement to address any demand (including body surface area adjusted measurements!), allowing complex cal...
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
2 ratings · Below Average
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 included13 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 EasyIV Infusion 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
Focus on user experience and feedback loops to refine the interface.
Assumption to check: Limited user reviews and low ratings may indicate usability issues.
Validate with people who use this workflow before building.
Hypothesis 2
Implement additional calculation methods and customization settings.
Assumption to check: Lack of advanced features or customization options for calculations.
Validate with people who use this workflow before building.
Hypothesis 3
Offer clear explanations of premium features and benefits.
Assumption to check: In-app purchases may confuse users if not clearly explained.
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
EasyIV was developed to handle any IV infusion calculation, configured with a comprehensive list of units of measurement to address any demand (including body surface area adjusted measurements!), allowing complex calculations in just a few taps. The user interface has been repeatedly tested and optimized to be intuitive and easy to use, and will be continuously updated based on user feedback. All number fields have an option to use a picker wheel for faster input of numbers. Packed with features such as: - Custom Solutions: save your own solutions and perform calculations in just a few taps - Create Lists: the app’s most unique and powerful feature….add your solutions to lists to simultaneously visualize all the solutions adjusted to weight - Supports continuous infusions as well as intermittent/push solutions, with a separate layout appropriate for each solution type - Comprehensive list of units of measurement to address any demand - Share your lists with other EasyIV users using AirDrop - Quick Calculator: perform calculations on the spot with ease in seconds with only a few taps. For any suggestions, to request a new feature, or to report a bug, please send us an email! We will be glad to evaluate them. Privacy Policy: https://sites.google.com/view/codeblueapp/easyiv-calculator/privacy-policy EULA: https://sites.google.com/view/codeblueapp/easyiv-calculator/eula Support Email: [email protected] This app was developed for educational purposes only. All formulas are available for reference in the app. No drug information is provided with the app.
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
React Navigation
React Native Paper
Async Storage
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.
