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
Buddy: Budget Planner App
Buddy helps you set up a budget and keep track of your expenses, either by yourself or together with your loved ones.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
9,612 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 included18 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 Buddy: Budget Planner App: map the core Finance 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
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
< Scroll to see more >
App Store description
Buddy helps you set up a budget and keep track of your expenses, either by yourself or together with your loved ones. Here’s what is waiting for you inside: BUDGETS Buddy will help you not to overspend on your well-earned salary by setting up a budget plan that fits you. Do you want a shared budget with your partner? Or keep the expenses between you and your mates fair on the vacation? No problem, just invite them and get a clear picture of who spent what. CONNECT YOUR BANK Import all transactions from your bank account into Buddy and see how your budget is doing. OVERVIEW We'll give you a beautiful & detailed overview of your spendings, income, and savings. SPLIT Split lets you know who paid what, and how to settle up. And much more for you to find. Take control of your finance today! Buddy offers a $9.99 monthly renewing and a $49.99 yearly renewing subscription to unlock Premium functionality. The purchase will be charged from your iTunes account if you choose to buy the Buddy Premium subscription. You can manage or cancel your subscription through the user settings in iTunes after the purchase. The subscription period ends with the same kind of subscription you already bought to the same price unless you turn off your subscription 24 hours before it renews. It is not possible to cancel your current subscription during the time your subscription is active. Privacy Policy: https://buddy.download/privacypolicy/ Terms & Conditions: https://buddy.download/terms-and-conditions/
Written user reviews are not shown here. Check current App Store reviews >
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 automatic transaction importing from linked accounts.
Assumption to check: Manual entry of transactions can be tedious
Validate with people who use this workflow before building.
Hypothesis 2
Introduce customizable budget categories and alerts.
Assumption to check: Limited budget tracking features
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the paywall process and offer clearer trial details.
Assumption to check: Paywall can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Add analytics features like spending trends and pie charts.
Assumption to check: Lack of visual reports
Validate with people who use this workflow before building.
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
Axios
React Navigation
AsyncStorage
Recharts
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.
