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
4Meds
4Meds is the simple, private medication tracker that helps you stay on top of your health — without accounts, subscriptions, or cloud sync.
$1.99 · In-app purchases
PRICE
$1.99
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 4Meds: map the core Health & Fitness 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
Implement better reminder notifications and user-friendly interfaces.
Assumption to check: Users often struggle to keep track of medication schedules.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize their medication routines and reminders.
Assumption to check: Lack of personalization options for medication tracking.
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the medication entry process with better input methods and validations.
Assumption to check: Data entry can be tedious and prone to errors.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate community features for users to share experiences and support each other.
Assumption to check: Limited social sharing features for support.
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
4Meds is the simple, private medication tracker that helps you stay on top of your health — without accounts, subscriptions, or cloud sync. Whether you take daily prescriptions, weekly supplements, or the occasional painkiller — 4Meds keeps everything organized in one clean, easy-to-use app. YOUR DAY AT A GLANCE Open the app and instantly see what's scheduled for today. A progress ring shows how you're doing, and every dose is just one tap away. Mark medications as taken, missed, or skipped — with satisfying haptic feedback that makes logging feel effortless. Past-due doses are highlighted so nothing slips through the cracks. FLEXIBLE MEDICATION MANAGEMENT Add recurring medications with custom schedules — choose specific days, set multiple times per day, and define the dosage for each. Track on-demand meds like painkillers or allergy pills with built-in dosage limits per day, week, or month. The app warns you when you're approaching your maximum — because safety matters. SMART REMINDERS Set up push notifications for every scheduled dose. Enable or disable reminders per medication or turn them all off globally. You're always in control. STATISTICS THAT MATTER See your adherence rate at a glance. View weekly intake charts, spot missed-dose patterns, and identify your most-used on-demand medications. Switch between 1-week, 2-week, 4-week, and 3-month views to find the insights you need. HEALTH JOURNAL Log symptoms, side effects, mood, and pain levels right alongside your medication data. Over time, see how what you take connects to how you feel. A valuable tool for conversations with your doctor. PROFESSIONAL PDF REPORTS Generate clean, detailed medication reports with your name, date range, adherence data, and charts — ready to share with your doctor, pharmacist, or caregiver. Export via AirDrop, email, print, or save to Files. YOUR DATA. YOUR DEVICE. PERIOD. 4Meds stores everything locally on your iPhone. No cloud. No account. No tracking. No analytics. Not a single byte leaves your device. Export your data as JSON anytime for safekeeping, and import it back whenever you need to. BUILT FOR EVERYONE Full Dynamic Type support for all text sizes VoiceOver compatible for all key interactions Light, Dark, and System appearance modes Clean, native iOS design that feels right at home 4Meds is a personal project built with care. No venture capital, no growth metrics, no data monetization — just a useful app that respects your privacy. One-time purchase. No subscriptions. No ads. Ever.
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
@react-navigation/native
@supabase/supabase-js
react-native-paper
BUILD KIT DIFFICULTY
Intermediate
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.
