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
Daily Budget Original Pro
Rated 5 stars and loved by thousands of users!
$11.99 · In-app purchases
PRICE
$11.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
138 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.
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A product spec, screen plans, and build steps for your coding agent.
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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/
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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 Daily Budget Original Pro: map the core Finance 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 a more intuitive budget management system with better visualizations.
Assumption to check: Users find it difficult to manage multiple budget categories.
Validate with people who use this workflow before building.
Hypothesis 2
Add analytics features that provide insights into spending habits.
Assumption to check: Lack of advanced analytics for spending patterns.
Validate with people who use this workflow before building.
Hypothesis 3
Introduce machine learning for automatic categorization of transactions.
Assumption to check: Users report issues with transaction categorization.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a free trial period to attract more users.
Assumption to check: High upfront cost without a free trial.
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
Rated 5 stars and loved by thousands of users! Unlike traditional complicated budgeting apps, Daily Budget Original focuses on being simple, easy and actually fun to use. This PRO version includes all paid features of the free version (yellow icon). -- SAFE & PRIVATE –- The app does not connect to bank accounts, so there is no need to enter your online banking log in data. Also, we do not sell user data. The data stays on your device only. If you want to sync your data, you can encrypt it before uploading it to the cloud. -- USER REVIEWS –- Beyond spectacular! - This app is so fantastic- as with many other reviewers, I've tried other budgeting apps like Mint. But this is the only app that actually works. It incentives me to spend less money on some days, have extra to spend on the weekends. Thank you for not adding too many bells and whistles! Life Changing - I am the WORST with finances and I've tried other apps, including Mint, which I used for a week and quit. But this app?? It's amazing. I can't speak highly enough of how much this app is getting my life together. I'm aggressively saving, paying off all of my bills and I know exactly what I get to spend a day. I will never NOT use this. I hope it's here forever. Helps you be Accountable - This app turns my financial life into a game that I feel I can win. Daily Budget really works and it's core design sets it apart from other apps. -- IN MEDIA –- “Take the blah out of budgeting” – Seventeen Magazine “An utterly fantastic approach to saving” – Apppicker “Super-quick, easy way to show how well we're doing” - Appadvice -- HOW IT WORKS -- 1. Enter your regular income, like salary or monthly allowance. 2. Enter your recurring expenses, like rent or gym. 3. Enter your saving goal, like 10%. 4. Watch your Daily Budget gets calculated and know how much you can spend every day! *Daily Budget is calculated simply as: (Income – Expenses – Saving)/Number of days in a month. Watch your budget grow as you stay below your daily budget. Now, saving money is suddenly a fun game!
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.
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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.
