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.
The perfect app for the Black & White photography.
$3.99 · 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.
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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 Blackie: map the core Photo & Video 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 filter options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent performance on older devices
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of batch editing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Low user rating due to bugs
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.
The perfect app for the Black & White photography. It doesn't matter if you've just started or you are a professional. The Blackie has something for everyone. Its minimal design and easy use with many features will make it your go-to app when you're in the mood for the Black & White. It will help you explore all the possibilities of the Black & White photography and achieve the best result. • Fast. Blackie opens in camera mode, so you can instantly capture moments around you and give them vintage feeling. • What you see is what you get. All effects are previewed in Real-time. • Shuffle your best. The smart shuffle works exceptionally. You only need to shuffle a couple of times and snap the best one. • Customize. If you have time, you can manage every effect in your photo with Mods by yourself. • Simple Minimal Design. The way that Blackie works is unique. The experience is clear and fast. No need for unnecessary buttons. • Just save it! Captured photo goes instantly to your photos library. It is up to you when you are ready to share it with the world. • No in-app purchases and no ads. Nothing to bother you while making memories. • Settings Save Original Photo On / Off. Save Photos with Compression (JPEG) On / (TIFF) Off. Modify UI to Lighting Conditions. (Black or White design). • Camera Manual Controls Manual Focus with Focus Peaking. Lenses. Manual Exposure. Shutter Speed and ISO. Manual White Balance. EV. • Grids 9x Grid Types with custom Opacity. Center Lines On / Off. Grid Color Black / White. • Presets 8x Slots for custom Presets. • Mods Crop and Rotate. Films. 5x Scanned Analog Films. 3x Digitally Created. Brightness. Contrast. Color Filters. 6x Types Red, Orange, Yellow, Green, Blue and Infra. Vignette Overlay. 5x Types with rotations and inverted light. Fade. Low, Mid, High mods. Shadows. Highlights. Sharp. 2x Types Clarity and Bloom. Grain. Frame. Black & White frame with custom size. • Post processing Before / After function. Tags: #blackieapp #blackie Note: iPhone 3GS, iPhone 4/4S, iPod 4th generation, iPad2, iPad Mini 1st generation, iPad3 is Missing Sharp and Grain Mods. All iPads preview and capture is in Square Mode only.
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.