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.
LogGPS is a GPS data logger and recorder utility that saves all GPS data when you press the 'Save' button
$4.99 · 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.
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Combine features and design from your favorite apps.
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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 Log GPS: map the core Navigation 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 offline functionality and map access
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inadequate export options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Battery drain during long logging sessions
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Confusing UI for new users
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.
LogGPS is a GPS data logger and recorder utility that saves all GPS data when you press the 'Save' button. The saved data includes notes, date and time, longitude, latitude, altitude, horizontal accuracy, vertical accuracy, speed, course, heading, and heading accuracy. The notes are not cleared between saves so you may save multiple data points with the same notes, add to the existing notes, or you may manually clear or edit the notes between saves. LogGPS is an ideal application to use for remote GPS data gathering with the intent of importing the GPS data into another application. LogGPS does not require any mapping for basic operation and therefor it does not require any network access. Because it does not require network access and currently does not record in the background it is fast and very easy on battery life. LogGPS has an option for a Big Button mode that make the entire screen a 'Save' button. Once activated, touching anywhere on the screen saves the current GPS location. This mode was designed specifically for city administrations to log locations for follow-up code enforcement inspections. It is possible to show any saved location using a map application. Of course, it only works if you have network access. There is also a 'return to location' function. After selecting a saved location, select the 'Return To' button and a new view will appear that shows the course, bearing, distance, and time to return to the saved location. The user may view all saved GPS readings. Individual readings can be deleted and notes edited. Clicking ‘Export’ allows sharing the collected data as a comma separated (CSV), GPX route, and/or GPX waypoint file. Data is exported without any transformations (metric units and UTC) regardless of the display settings. Once the data is exported and a file selected, it can be emailed, sent to other applications, saved in a common file area, etc. using the 'Share' button Settings in the Apple Settings application allow: - Metric or US Customary Units for displayed distance. - Local device time or UTC for displayed time. - DMS or fractional degrees for displayed latitude and longitude. - Sorting newest readings at top or bottom. - Selection of mapping application (Apple Maps, Google Maps, Google Web.) - Self contained help files. - GPS update settings to balance battery life with accuracy. - Selection of CSV export formats (header row inclusion, time format, separator, null values, line endings, etc.) - Type of Save feedback.
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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.
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.