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.
Stop paying monthly fees just to manage your inventory
$29.99 · 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 Inventory & POS - SellStock: map the core Business 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 customization options for inventory item types.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Complex navigation for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High subscription cost compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of advanced reporting features.
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.
Stop paying monthly fees just to manage your inventory. SellStock is the all-in-one inventory + POS app that you buy once and own forever — now with split payments, sales on credit, refunds, suppliers and full backups. ◆ ONE PAYMENT. NO SUBSCRIPTIONS. EVER. No monthly fees, no annual renewals, no "premium" tiers. Every feature included, every future update free. ◆ YOUR DATA NEVER LEAVES YOUR DEVICE While other apps upload your sales to their servers, SellStock keeps everything on YOUR device. No external databases, no tracking, no analytics, no ads. Optional iCloud sync stays in your personal iCloud account — we never see it. ◆ WORKS EVERYWHERE — EVEN OFFLINE No Wi-Fi at your market booth? No problem. SellStock works 100% offline. Sell, track stock and run reports without internet. iCloud catches up automatically when you're back online. ◆ COMPLETE INVENTORY MANAGEMENT • Unlimited products with photos • Barcode scanning for instant lookup • Custom categories and smart organization • Real-time stock with low-stock push alerts • Automatic SKU generation • Cost, price and margin tracking • Full movement history (purchases, sales, losses, counts) ◆ POINT OF SALE THAT JUST WORKS • Clean, fast checkout • Barcode scanner in cart • Customer database for repeat buyers • Flexible tax configuration • Per-item AND ticket-level discounts • Reusable promotions (% or fixed) for all products, a category or custom lists • AirPrint receipts and PDF sharing ◆ SPLIT PAYMENTS & SELL ON CREDIT (NEW) • Combine cash, card and transfer in a single sale • Leave a balance on credit ("fiado") for trusted customers • Accounts Receivable screen with totals per customer • Log partial or full payments later — every installment recorded ◆ REFUNDS & SALE EDITING (NEW) • Return individual items or full sales — stock and revenue update automatically • Edit a sale rung up wrong without voiding the whole ticket • Complete refund history attached to each sale ◆ SUPPLIERS & PURCHASE ORDERS (NEW) • Keep a contact book of your suppliers • Create purchase orders with quantities, unit costs and invoice numbers • Receive stock with one tap — inventory and cost prices update in one transaction ◆ REPORTS THAT HELP YOU GROW • Daily, weekly, monthly OR any custom date range • Revenue, transactions and average ticket — with growth vs the previous period • Best-selling products and category breakdowns • Export to PDF or CSV ◆ REAL BACKUPS, YOUR WAY (NEW) • Export your entire business — products, sales, photos, suppliers — as one .sellstock file • Save it to Files, Drive, email or anywhere you want • Restore on any device with one tap ◆ SPOTLIGHT GLOBAL SEARCH (NEW) Find any product, customer or sale straight from the iOS Spotlight bar — without even opening the app. ◆ MULTI-BUSINESS SUPPORT Run multiple businesses from one app, each with its own products, customers, suppliers and sales. ◆ BUILT FOR IPHONE, IPAD & MAC Native, beautiful interface for every screen size. Dark mode included. ◆ SPEAKS YOUR LANGUAGE Fully translated into 8 languages: English, Spanish, Portuguese, Polish, Dutch, German, French and Italian. ◆ PERFECT FOR • Retail & online stores • Market & craft vendors • Food trucks & restaurants • Pop-up shops & home businesses • Freelancers & service providers Join the small business owners who ditched subscription apps. Download SellStock and take control of your inventory today.
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.