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.
You're at a waterfall at sunrise
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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 Field Book: Landscape Photo: map the core Reference 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: Poor user engagement due to lack of interactivity.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited photo editing options.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficulty in discovering new locations.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of offline capabilities.
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.
You're at a waterfall at sunrise. The light is changing fast. What lens? What filter? What settings? What composition mistakes should you avoid? The Field Book answers those questions in under a minute. 161 SITUATION-BASED GUIDES Organized by what you're actually facing in the field: SCENES - Waterfalls, lakes, rivers, and coastlines - Mountains, alpine meadows, and ridgelines - Forests, fog, autumn color, and sunbeams - Deserts, dunes, slot canyons, and badlands - Prairies, canyons, glaciers, paths, and structures LIGHT CONDITIONS - Golden hour, blue hour, and midday - Fog, storms, rain, snow, and rainbows - Front light, side light, backlight, and shade - Moonlight and night photography CHALLENGES - No obvious subject or focal point - Boring foreground, cluttered frame - Extreme contrast, lens flare, wind - Wrong gear, bad weather, fading light TECHNIQUES - Long exposure for silky water and clouds - Focus stacking for front-to-back sharpness - Panoramas and stitching - Exposure bracketing and blending - Telephoto compression for layered landscapes - Intimate landscapes and detail shots WHAT EACH GUIDE INCLUDES - The Situation: What you're facing, in one sentence - Gear Picks: Specific lens and filter recommendations - Composition Checklist: Actionable items to work through - Settings Starting Point: Aperture, shutter, ISO, focus - Common Mistakes: What to avoid - See Also: Related situations to explore BUILT FOR THE FIELD - Works 100% offline—no cell signal required - Interactive checklists that save your progress - Bookmark guides for quick access - Search across all 161 sections - Clean, readable interface designed for outdoor use WHO THIS IS FOR Photographers who know their camera basics but want field-ready guidance for landscapes specifically. You understand aperture and shutter speed. You don't need hand-holding. You need a reference from someone who's been in the field telling you what actually works. This isn't a textbook. It's a working tool designed to be pulled out when you're standing in front of a scene wondering what to do. NOT INCLUDED - Post-processing tutorials (this is about capturing the shot) - Camera operation basics (you already know those) - Gear reviews or buying guides - Generic photography theory THE ONE-PAGE CHEAT SHEET Every photographer needs quick reminders. The built-in cheat sheet covers: - Composition essentials (foreground, subject, leading lines, simplify, edges) - Light essentials (golden hour, overcast, harsh light, backlight, side light) - Technical defaults (f/8–f/11, silky water settings, freezing motion) - The five questions to ask before every shot FIELD GEAR CHECKLIST A complete packing checklist with scenario-specific additions for water, mountains, forests, desert, coastal, and night photography. --- From waterfalls to slot canyons, sunrise to storm light, the Field Book puts practical guidance in your pocket for every landscape situation you'll face.
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.