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.
Pocket is the expense tracker that gets smarter every time you use it
$1.99 · In-app purchases
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.
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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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Pocket: Expense 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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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
Assumption to check: Users often find expense tracking tedious and time-consuming.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Many finance apps lack detailed analytics.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Users struggle with setting and tracking budgets effectively.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: The user interface can be overwhelming.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Pocket is the expense tracker that gets smarter every time you use it. No spreadsheets. No manual setup. Just open the app, confirm what it already knows, and move on. LEARNS YOUR HABITS Pocket silently learns your patterns. It knows you grab coffee on weekday mornings, order food on Friday evenings, and pay your subscriptions on the same date. Over time, it pre-fills amounts, pre-selects categories, and surfaces the right merchants before you even start typing. ADD AN EXPENSE IN UNDER 5 SECONDS Open the app. Your most likely amount is already suggested. Category and merchant suggestions are ready as instant-tap chips. Confirm and you're done. Pocket is faster than any other expense app on the market. YOUR DASHBOARD IS YOUR COMMAND CENTER One number tells you everything: Left to Spend. Not just your balance — your budget minus upcoming known expenses, recalculated daily. Below it, a monthly timeline shows the shape of your spending. Customise list views to show/hide tags and account details. SMART FEATURES THAT WORK QUIETLY - Time-aware amount suggestions based on your last 90 days - Category & Subcategory suggestions as you type - Merchant memory ranked by frequency and recency - Automatic recurring bill detection — no manual setup - Spending spike alerts when any category exceeds 2x your average - Contextual bank account memory — remembers which account you use - Account-to-Account transfers — move money without skewing expense totals - Biometric App Lock — secure your data with FaceID / TouchID unlock ICLOUD & LOCAL BACKUPS Enjoy complete peace of mind. Pocket automatically backs up your data to iCloud in the background—keeping it secure and entirely private. You can also export your history as a secure, local .pocket file. RECEIPTS & DOCUMENT ATTACHMENTS Never lose a receipt. Snap a photo, choose from your gallery, or upload PDF invoice files directly to any transaction. View full-screen interactive previews anytime. NESTED SUBCATEGORIES & CUSTOM TAGS Track spending with total precision. Create custom tags to filter transactions across dimensions, and use nested subcategories (like Food > Groceries) for granular logs. Easily bulk-update subcategories for past transactions. HOME SCREEN WIDGETS Keep your finances visible. The Quick Add widget lets you log expenses directly from your home screen in two taps. Today's spend and monthly total are always visible. Fully supports Light and Dark themes. MULTIPLE BOOKS & ACCOUNTS Separate personal and business expenses with Books. Switch between them instantly. Copy existing bank accounts between Books. Adjust cash balances with automatic offset calculations, and view total balances across Cash, Banks, and Wallets. INTERACTIVE ANALYTICS See spending by category, subcategory, merchant, account, and time period. Tap any segment in your charts to jump straight to its pre-filtered transaction list. COMPLETELY PRIVATE BY DESIGN No account required. No cloud sync to third-party servers. No ads. Ever. Every piece of data lives on your device. All suggestions, patterns, and predictions run entirely on-device. Nothing is sent anywhere. AVAILABLE IN 18 LANGUAGES English, Arabic, Chinese (Simplified & Traditional), French, German, Spanish, Portuguese, Italian, Japanese, Korean, Dutch, Polish, Swedish, Czech, Thai, Indonesian, Vietnamese, and Malay.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.