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
Vitamins 101
With Vitamins 101 you'll have all the information you ever wanted to know about vitamins in the palm of you hand.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
61 ratings · Top 15%
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 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.
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 Vitamins 101: 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.
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
Provide more in-depth articles and detailed benefits for each vitamin.
Assumption to check: Limited information on vitamins compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement a modern design with better UI/UX practices.
Assumption to check: User interface can feel outdated
Validate with people who use this workflow before building.
Hypothesis 3
Enhance search to include filters and related articles.
Assumption to check: Search functionality may not be comprehensive
Validate with people who use this workflow before building.
Hypothesis 4
Add social features like user reviews, comments, and shared favorites.
Assumption to check: No community features for user engagement
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
With Vitamins 101 you'll have all the information you ever wanted to know about vitamins in the palm of you hand. Vitamins 101 gives you informations about vitamins, minerals, fats, carbs and more. Vitamins 101 has a massive database which contains lists of food products (fruits, vegetables, meat, nuts, fish, beans, dairy, bread, pasta, rice, cereals, drinks, spices, herbs and more). So when you eat an apple and want to know what vitamins and minerals it contains? Vitamins 101 will provide you with the answer. You're doing groceries at the supermarket and want to prepare something with broccoli. How many calories does it contain or what about the potassium level? Don't worry Vitamins 101 knows the answer! Special options: With the search option you can simply type in the product name and tap it for more information. The advanced option brings evenmore power to your foodselection process by ordering the foodcategory by the criteria of your choice. Interested in protein levels? The advance option will order the food listing by the highest protein levels first. What about something else like cholesterol levels? Just select the cholesterol cirteria and your done. ----------------------------------------------
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 Navigation
Supabase
Expo
React Query
TypeScript
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.
