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
Bili QuikCalc
Bili QuikCalc contains all the information you need to quickly evaluate and manage infants with jaundice in the newborn nursery
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
JavaScript is required to complete mailbox verification.
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 Bili QuikCalc: map the core Medical workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Implement real-time validation and suggestions for input.
Assumption to check: Limited user input validation can lead to incorrect calculations.
Validate with people who use this workflow before building.
Hypothesis 2
Add share functionality to export results easily.
Assumption to check: No sharing options for results.
Validate with people who use this workflow before building.
Hypothesis 3
Implement user accounts to save and track past calculations.
Assumption to check: Lacks user account management.
Validate with people who use this workflow before building.
Hypothesis 4
Include more educational content and resources within the app.
Assumption to check: Minimal educational resources about bilirubin.
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
Bili QuikCalc contains all the information you need to quickly evaluate and manage infants with jaundice in the newborn nursery. Bili QuikCalc is the fastest, clearest bilirubin calculator for viewing bilirubin risk zone interpretations, plotting bilirubin on the risk, phototherapy, and exchange transfusion nomograms, viewing bilirubin thresholds, and viewing the American Academy of Pediatrics Subcommittee on Hyperbilirubinemia recommendations for evaluation and treatment of hyperbilirubinemia. FEATURES: • Fastest, clearest bilirubin calculator based on the latest AAP Subcommittee on Hyperbilirubinemia recommendations. • First and only bilirubin calculator to support Apple Watch - check and plot the bilirubin risk on your wrist! • Innovative data entry and automation display results quickly and clearly WITH LESS TAPPING! • View the bilirubin risk zone interpretation and recommendations for assessment and follow-up of the newborn with jaundice. • View the bilirubin thresholds for lower, medium, or higher risk infants delivered from 35 weeks to ≥38 weeks gestational age. • Plot the bilirubin level on the Bhutani risk, phototherapy, or exchange transfusion nomograms. • Swipe to switch between nomograms. • View the latest bilirubin management algorithm. Check the Help file in Bili QuikCalc for complete details about the new features and functions in this update. If you find Bili QuikCalc useful, please post a 5-star review in the iTunes App Store! Great reviews keep the updates coming! Thanks for the downloads and support!
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
TypeScript
@react-navigation/native
axios
react-native-paper
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.
