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.
Core Data Lab lets you easily view, edit and analyse data of SQLite based Core Data and SwiftData apps
$19.99 · 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.
Kit ready. Verify your email to download it.
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 Core Data Lab: map the core Developer Tools 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: Lack of user reviews and trust signals
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited functionality in data visualization
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High initial purchase price without trial
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Complexity of use for beginners
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.
Core Data Lab lets you easily view, edit and analyse data of SQLite based Core Data and SwiftData apps. View, track and explore what’s inside your Core Data database, including all Core Data specific details like relationships, entity descriptions, fetch request templates, composite attributes and more. Quick start • Setup a new project in a few easy steps using the project assistant. • Select an app or model file and let Core Data Lab search for matching database. • Or select a database file and let Core Data Lab search for matching apps. • Or use the simulator browser to select a database and app combination in one go. Data change tracker • Hit the Play button on the toolbar to start tracking database changes. • New, deleted and changed data rows are being displayed with distinct colours. • Each previous row version is displayed individually, including all value changes. • No need to change your project or implement special libraries. • Works with macOS apps and apps running in an iOS, iPadOS, watchOS or tvOS simulator. Data filter • Use the built-in easy to use predicate editor to filter and query your data. • Save predicates as part of a Core Data Lab project for easy access. • Duplicate predicates to make quick variants of the same filter. Data editor • Edit and create data directly in the detail panel or detail window. • Delete rows directly in the data grid. • Change, replace, or nullify data with batch updates. • All data mutations are validated by the active Core Data Object model. Relationships viewer • View instantly all relationships and related data of a selected row. • Easily switch to another relationship. • Selecting a row in the relationship panel will show the data in the detail panel. Simulator browser • Browse local iOS, iPadOS, watchOS or tvOS simulators for Core Data apps and databases. • Add app and database combinations with one click to your project. Web viewer • Automatic detection and display of web links, images, HTML content, PLIST objects and binary content. • Switch to Text view to inspect the HTML, XML or JSON text content of web links. • Built-in HTML debugger. Entity description viewer • View all details of all attributes of a selected Core Data entity. • Inspect all other details like relationships, indexes and constraints. Raw data viewer • Open and view SQLite databases without selecting a Core Data object model. • Support for opening SQLite files in the Finder. Data import • Import data using CSV or JSON files. • JSON import supports relationship data and composite attributes. • All data import happens under validation of the active Core Data Object model. Data export • Export a selected row or table to CSV or JSON. • Export data tracking data to CSV or JSON including history data. • JSON export supports relationship data and composite attributes. • CSV data can be viewed and further processed in Excel or Numbers. Project based • Your database, app and model references are stored in a Core Data Lab project. • Data filters, selections and sorting settings are also part of the same project. • This makes it easy to stop and continue working with your data, without recreating anything. • Projects are saved as standard NSDocument files, including tabbed windows, auto save and more. Support If you encounter problems with this app, then please take a look at the Core Data Lab help page at https://betamagic.nl/support/coredatalab/help.html. If this doesn’t provide the solution you are looking for, or you miss some essential features, just contact us at [email protected].
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.