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.
Monitor the AQI from your own PurpleAir sensor from your iPhone, iPad, or watch
Free · 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 My PurpleAir: map the core Weather 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 sensor locations available
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No detailed historical data
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User interface is cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Notifications can be unreliable
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.
Monitor the AQI from your own PurpleAir sensor from your iPhone, iPad, or watch. Use the app's simple screen, or, add a widget / complication to your Home Screen / watch face.. This app can only monitor a sensor on the same LAN as the watch or companion phone. To setup: 1. Connect the app to the device. Use the device search, or enter your sensor’s IP address 2. Add a app’s complication or widget to your home page to watch faces. Data sharing between an iPhone/iPad and a companion watch: 1. The sensor address is shared both ways, 2. If one device has an address, but the other doesn't, then opening the app that doesn't have an address copies the address from the paired device. a. If the address doesn't copy within a minute, close the app on both devices and restart them. 3. Changing address on the phone changes the address on the watch. a. Changing the address on the watch does not change the phone, UNLESS the phone doesn't have an address. 4. The latest sample is sent from the phone to the watch, if the watch is in range, regardless of addresses. Air quality details: The app shows the PM2.5, "120 second average refreshed every 10 seconds" on the sensor's built in web page. It averages the A and B channels. Specifically, the pm2.5_aqi and pm2.5_aqi_b fields from the json API. You can see same numbers by pointing a browser at http://device_address/json The app updates the AQI approximately every 15-20 minutes, or when you open the app or restart your watch. It can take a long time to update widgets/complications when reconnecting to a network. On iPhone/iPads with iOS version 16.4 or higher installed, the app is refreshable, that is, pulling down on the screen forces everything to refresh. NOTICE: This app is not a product of PurpleAir, Inc.
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.