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
Package Tracker: Track Parcels
Get ‘Package Tracker’ to track all your shipments in the one app!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
1,278 ratings · Top 15%
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 included17 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 Package Tracker: Track 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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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 an OCR feature to scan tracking numbers.
Assumption to check: Users often find tracking numbers hard to input correctly.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance notification system with better scheduling and user preferences.
Assumption to check: Push notifications can be unreliable.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate more carriers or allow user submissions.
Assumption to check: Limited carrier support can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the interface and prioritize essential functions.
Assumption to check: UI can feel cluttered with too many features.
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
Get ‘Package Tracker’ to track all your shipments in the one app! With our application you can access tracking information for hundreds postal and delivery services, both local and international. Supported services include FedEx, DHL, UPS, USPS, DPD, TNT, GLS, UK Mail, China Post, OnTrac and many others. If you are an active online shopper, you can track all your shipments in the single app! Just add the tracking number and that’s all! Features: - Quick adding tracking number - Get push notification when delivery status updates* - Track as many parcels as you want* - Add memo for every tracking number - Track multiple carriers in the one app - Pull-to-refresh all tracking numbers at once - View details about your current package status and location - Save archive for all delivered packages * Some features may require premium subscription. For suggestions or feedback don’t hesitate to email us at [email protected] The app is free to download and use, but we also offer an optional subscriptions. We offer a monthly auto-renewable subscription with a free trial and an annual subscription. The prices may vary per country and are subject to change without notice. Prices are clearly displayed in the app. Premium subscription: - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the period - Length of subscription: one month, one year - Price of subscription: $2.99 USD per month, $19.99 USD per year (prices may vary per country) - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription. Terms of Use: https://www.nogamelabs.com/terms Privacy Policy: https://www.nogamelabs.com/privacy
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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
Supabase
React Navigation
Axios
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.
