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.
Get a very popular and intuitive currency converter and access the latest exchange rates quickly and easily
$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.
First kit free with a verified email
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 Exchange rate converter: 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: Limited currency options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No ability to save favorite conversions
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of offline functionality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic user interface
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.
Get a very popular and intuitive currency converter and access the latest exchange rates quickly and easily. The converter features exchange rates for over 150 countries and commodities. Create your personal currency list and have them a first glance, even offline. Use the built in calculator to verify all your business. We bring currency exchange rates to your Apple Watch. Access and convert currencies directly on your Watch. CURRENCY RATES AND CHARTS ● Major world currencies, crypto-currencies and precious metals (150+) ● Graphs for historical exchange rates (week, month, 3 months, year and 10 years) ● Push notifications ● Intuitive and efficient user interface ● Switch base currency with one click ● Export charts CALCULATOR ● Full featured built-in calculator ● Verify prices manually PERSONALIZE YOUR SETTINGS ● Configure your currency list ● Thresholds for notifications ● Set the precision you need OFFLINE ● Use without internet ● Access the rates from the latest update ● No roaming fees APPLE WATCH ● Convert on your Apple Watch CURRENCIES ● EUR, USD, CHF, GBP, JPY, AED, AFN, ALL, AMD, ANG, AOA, ARS, AUD, AWG, AZN, BAM, BBD, BDT, BGN, BHD, BIF, BMD, BND, BOB, BRL, BSD, BTN, BWP, BYR, BZD, CAD, CLP, CNY, COP, CRC, CUC, CUP, CVE, CZK, DJF, DKK, DOP, DZD, ECS, EEK, EGP, ERN, ETB, FJD, FKP, GHS, GIP, GMD, GNF, GTQ, GYD, HKD, HNL, HRK, HTG, HUF, IDR, ILS, INR, IQD, IRR, ISK, JMD, JOD, KES, KHR, KMF, KPW, KRW, KWD, KYD, KZT, LAK, LBP, LKR, LRD, LSL, LTL, LVL, LYD, MAD, MDL, MKD, MMK, MNT, MOP, MRO, MTL, MUR, MVR, MWK, MXN, MYR, MZN, NAD, NGN, NIO, NOK, NPR, NZD, OMR, PAB, PEN, PGK, PHP, PKR, PLN, PYG, QAR, RON, RSD, RUB, RWF, SAR, SBD, SCR, SDG, SEK, SGD, SHP, SIT, SKK, SLL, SOS, STD, SVC, SYP, SZL, THB, TND, TOP, TRY, TTD, TWD, TZS, UAH, UGX, UYU, VEF, VND, VUV, WST, XAF, XAG, XAL, XAU, XCD, XCP, XOF, XPD, XPF, XPT, YER, ZAR, ZMK, ZWD --------------------------------------------------------------- Thank you for all your feedback! If you miss something, let us know: [email protected] ---------------------------------------------------------------
Written user reviews are not shown here. Check current App Store reviews >
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.