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
SubFlow | Subscription tracker
Manage Your Subscriptions and Organize Your Finances with Ease!
$1.99
PRICE
$1.99
No 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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 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 SubFlow | Subscription tracker: 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 dashboard that aggregates subscriptions and highlights upcoming payments.
Assumption to check: Difficulty in tracking multiple subscriptions in one view
Validate with people who use this workflow before building.
Hypothesis 2
Introduce customizable notification settings for users.
Assumption to check: Lack of notifications for upcoming payments
Validate with people who use this workflow before building.
Hypothesis 3
Enhance reports with interactive charts and insights.
Assumption to check: Limited visual representation of spending trends
Validate with people who use this workflow before building.
Hypothesis 4
Add category tags to subscriptions for better organization.
Assumption to check: No ability to categorize subscriptions
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
Manage Your Subscriptions and Organize Your Finances with Ease! With our app, have full control over your recurring subscriptions and keep your finances organized! Register and track your subscriptions in a simple and efficient way. Choose from over 200 subscriptions examples for easy registration or create your own personalized subscription with a complete and intuitive interface. Personalize your experience even further with different color and icon options, and manage your subscriptions in more than 50 available currencies. All your data is stored securely and privately in iCloud, with an additional lock screen for added security, allowing access across all devices linked to your account. Receive billing reminder notifications, avoid surprises and have greater visibility of your expenses. Our app is constantly updated to always offer the best user experience, without recurring fees or additional subscriptions. Purchase it with a single symbolic payment and enjoy all the support and practicality of a modern, secure and highly customizable subscription manager. Terms of Use: https://github.com/subFlow-app/subflow-privacy-terms/blob/main/TERMS.md
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
Zustand
react-navigation
react-native-chart-kit
@react-native-picker/picker
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.
