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.
Track all your packages in one place — from Amazon, AliExpress, Temu, SHEIN, eBay and any online store
Free
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.
Your first Build Kit is free with a verified email.
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 Package Tracker: Parcels: map the core Shopping 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 tracking number formats supported
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No push notifications for delivery updates
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of user feedback options
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.
Track all your packages in one place — from Amazon, AliExpress, Temu, SHEIN, eBay and any online store. Package Tracker supports 3,400+ carriers worldwide with real-time tracking updates, push alerts and a live map of your delivery. Just paste a tracking number: the app detects the carrier automatically and follows your package from dispatch to your door. KEY FEATURES Real-time tracking updates — statuses refresh the moment the carrier reports a new scan Push alerts for every status change: shipped, in transit, customs, out for delivery, delivered Live delivery map — see where your package is right now and the route it has traveled Automatic carrier detection from any tracking number, no manual selection needed Full delivery timeline with every checkpoint and location End-to-end tracking across carrier handovers, e.g. China Post to USPS or Cainiao to Amazon Tracking events from Chinese and other languages translated into English Custom package names ("New iPhone case", "Mom's birthday gift") and notes All active and delivered packages in one organized list SUPPORTED CARRIERS USPS, UPS, FedEx, DHL, Amazon Logistics, OnTrac, LaserShip, UniUni, SpeedX, China Post, EMS, Cainiao, SF Express, Yanwen, 4PX, YunExpress, Royal Mail, Evri, DPD, GLS, InPost, La Poste, Colissimo, Correos, Correios, PostNL, Poste Italiane, Deutsche Post, Japan Post, Canada Post, Australia Post, Aramex, SMSA, PTT, Trendyol Express and hundreds of local postal services — 3,400+ carriers in total. WORKS WITH EVERY STORE AliExpress, Temu, SHEIN, Amazon, eBay, Etsy, Vinted, Shopify stores and any shop that gives you a tracking number. WHY PACKAGE TRACKER Carrier apps only track their own shipments. Package Tracker replaces ten carrier websites with one list: USPS, UPS, FedEx, DHL, Cainiao and every other carrier side by side, with the same alerts and map. It is built for international orders — a package from AliExpress or Temu is tracked from the seller's warehouse through customs to your local courier, with every foreign-language event translated. TYPICAL USE CASES Ordered from AliExpress and got a Cainiao or Yanwen number? Waiting for a Temu haul? Tracking a USPS, UPS or FedEx package? Expecting an international shipment stuck in customs? Package Tracker handles all of it in one app. PACKAGE TRACKER PRO Unlimited packages at the same time Instant push notifications for every tracking update Priority tracking data refresh 3-day free trial TRACK DELIVERIES IN 190+ COUNTRIES United States, Canada, United Kingdom, Germany, France, Spain, Italy, Netherlands, Poland, Portugal, Brazil, Mexico, Japan, China, Turkey, Saudi Arabia, UAE and worldwide. FAQ How do I track an AliExpress order? Copy the tracking number from your order details (formats like LP00…, YT…, SYAE…) and paste it into Package Tracker. The app detects Cainiao, Yanwen, 4PX or another carrier automatically. Can I track a Temu or SHEIN package? Yes. Paste the tracking number from your order confirmation and the app follows it across every carrier, including last-mile couriers like UniUni, SpeedX or USPS. Can I see where my package is on a map? Yes. Every tracked package has a live map showing its current location and route. What if my package is stuck in customs? Customs events appear in your timeline and you get a push alert when the status changes. Does it work without a tracking number? A tracking number is required — any format from any supported carrier works. PRIVACY No account required. Your tracking numbers are used only to fetch delivery status. No ads. Subscription terms: Payment is charged to your Apple ID at confirmation of purchase. Subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Privacy: https://parcel-tracker.app/privacy.html Terms: https://parcel-tracker.app/terms.html Support: [email protected]
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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.
Not assessed in a Build Kit yet.
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.