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.
Json Genie is a fast JSON file opener, viewer, editor and formatter for iPhone and iPad.
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 Json Genie: JSON Editor/Viewer: 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: Difficulty in handling large JSON files
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of advanced editing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic user interface
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.
Json Genie is a fast JSON file opener, viewer, editor and formatter for iPhone and iPad. Built by an independent developer and based on years of real-world JSON tooling experience, Json Genie was created for practical JSON work on mobile: open the file, understand the structure, make your changes and move on. No account. No cloud upload. Your JSON files stay on your device. Open .json and JSONC files, browse them in a clean JSON tree view, search JSON keys and values, edit JSON data, pretty-print, minify and share the result. Your JSON stays local Json Genie opens, views, edits, searches and formats JSON directly on your iPhone or iPad. Your JSON files are not uploaded to our servers just to open, read, edit, pretty-print, minify or inspect them. That makes Json Genie useful for API responses, configuration files, exported data, logs, backups, app data, test files and JSON content you do not want to paste into an online JSON viewer, JSON formatter or converter. View JSON clearly Json Genie turns JSON into a clean object and array tree view that is easier to read on a phone or tablet than raw JSON text. Browse nested objects, arrays, strings, numbers, booleans and null values in a structured layout without losing track of the data. Open JSON from anywhere Use Json Genie as a JSON file opener for files on your device, pasted text, shared content, URLs and supported archives. Open .json files from Files, Mail, cloud storage apps, shared files or copied JSON text. Search and understand JSON Search through JSON keys, values and paths across your document. Jump to matching results, inspect the surrounding structure and return without losing your place. Smart filters such as id: 3, game.id: 3 or city: "Austin" help you find specific data faster. Edit JSON without raw text hassle Edit JSON files without manually fixing commas, brackets and quotes. Change strings, numbers, booleans and null values. Add, edit, clone, delete, move and reorder objects, arrays and values while keeping the JSON structure clear. Format and export JSON Use Json Genie as a JSON formatter when you need cleaner output, compact JSON, sorted keys or a readable structure before saving or sharing. Pretty-print, beautify, minify, share as text or file, or switch to raw text view when needed. Fast with small and large JSON files Speed has always been one of the main goals of Json Genie. It opens small JSON files quickly and is built to handle large, deeply nested JSON documents without getting in your way. Built by an independent developer Json Genie is not a bloated corporate editor. It is built by an independent developer, improved through real user feedback and focused on practical JSON work on iPhone and iPad. What you can do with Json Genie • Open JSON files from storage, URLs, pasted text, shared content and supported archives • Work with JSON and JSONC files, including comments • View JSON in a clean object and array tree view • Search JSON keys, values and paths • Use smart search filters like id: 3, game.id: 3 or city: "Austin" • Edit strings, numbers, booleans, nulls, objects and arrays • Add, delete, clone, move and reorder JSON entries • Open multiple JSON files in tabs • Copy and reuse JSON entries with paste history • Pretty-print, beautify, minify and sort JSON keys • Share JSON as formatted text or as a file • View raw JSON text when needed Useful for real-world JSON work Json Genie is useful for developers, testers, students, support teams, power users and anyone who needs to open, inspect, edit or format JSON files on iPhone or iPad. Use it for API responses, config files, exported data, JSON attachments, logs, test data, backups and other JSON files you need to read or clean up. Free and Premium Json Genie is free to use. Premium is optional and removes ads, expands file and tab limits, increases history and unlocks extra themes.
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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.