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.
Now with 122 knots! Pro-Knot is the most trusted printed knot reference in the world
$1.99 · 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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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 Pro-Knot: map the core Sports 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 knot options compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No interactive tutorials.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Paywall for key features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No community features.
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.
Now with 122 knots! Pro-Knot is the most trusted printed knot reference in the world. These are the same rope knot illustrations we supply to the US Department of Defense for training, US Border Patrol, Fire Departments, Utilities, Arborists and countless Scout troops in our best selling printed format! These are the same fishing knot illustrations from the best selling printed fishing knot reference in the world! - 4 weeks as a "WHATS HOT" iTunes App! - Previous #1 Sports App in USA! - #1 Sports App in 41 Countries! Free updates with more knots are provided regularly (currently on our 11th update). We are committed to keeping this the best knot app available in the iTunes store. - 64 essential Rope Knots - 58 best Fishing Knots (most fishing knots of any App in the store!) All explained in clear, easy to follow swipe through step-by-step instructions and animations. The knots, their uses and background information are described and the tying of each knot is broken down into easily understood steps, with easy to follow graphics for each step. Optional animations of all of the knots are available as a single in-app purchase. The essential ROPE KNOTS include: Hitches (34) (rope to object knots): - Anchor Bend - Bachmann Knot - Barrel Hitch - Blake's Hitch - Buntline Hitch - Cleat Hitch - Clove Hitch - Constrictor Knot - Cow Hitch - Distal Hitch - Girth Hitch - Half Hitch (and Two Half Hitches) - Highwayman's Hitch - Icicle Hitch - Klemheist - Knute Hitch - Marl - Midshipman's Hitch - Mooring Hitch - Munter Hitch - Pile Hitch - Prusik Hitch - Rolling Bend - Rolling Hitch - Schwabisch Hitch - Slipped Knot - Slipped Buntline - Tautline Hitch - Tautline to Rope - Transom Knot - Timber Hitch - Trucker’s Hitch - Tumble Hitch - Valdotain Tresse Knot Bends (9) (rope to rope knots): - Backup Knot - Better Bow Knot - Carrick Bend - Double Fisherman’s - Sheepshank - Sheet Bend (doubled version too) - Square Knot (Reef Knot) - Water Knot - Zeppelin Bend Loop Knots (11): - Bowline - Bowline on a Bight - Butterfly Knot - Figure Eight Follow Through - Honda Knot - Prusik Knot - Scaffold Knot - Slip Knot - Slipped Buntline - Slippery Eight Loop - Yosemite Bowline Miscellaneous Knots (10) - Alpine Coil - Common Whipping - Double Overhand Stopper - Fireman's Coil - French Whipping - Heaving Line Knot - Monkey's Fist - Sailor's Coil - Stevedore Stopper Knot - Stopper Knot (Ashley's Stopper) The 58 best FISHING KNOTS include: Terminal Tackle Connections (28): - Baja Knot - Berkley Braid Knot - Centauri Knot - Davy Knot - Drop Shot Rig - Egg Loop - Eye Crosser Knot (Knot Wars winner) - Fish-N-Fool Knot (Knot Wars winner) - Harvey Dry Fly Knot - Homer Rhode Loop Knot - Improved Clinch Knot - Jansik Special - Knotless Knot - NanoFil Knot - Offshore Swivel Knot - Orvis Knot - Palomar Knot - Pitzen Kno - Rapala Knot - Riffle Hitch - San Diego Jam Knot - Snell Knot easy version - Snell Knot traditional version - Snell Knot Uni Knot version - Trilene Knot - Turl Knot - Uni Knot - World's Fair Knot Line to Line Knots (15): - Alberto Knot - Albright Special - Australian Plait - Blood Knot - Bristol Knot (aka No Name Knot) - Double Uni Knot - FG Knot - J Knot - Loop to Loop Connection - Nail Knot - Seaguar Knot (Fluorocarbon knot) - Slim Beauty - Surgeon’s Knot - Willis Knot (Leadcore) - Yucatan Knot Loop Knots (7): - Bimini Twist - Dropper Loop - King Sling - Non-Slip Mono Loop - Perfection Loop - Spider Hitch - Surgeon’s End Loop Miscellaneous (8): - Arbor Knot - Bobber Stopper Knot - Haywire Twist - Knot Tyer Tool Nail Knot - Two Tenkara Knots - Two Strike Indicator Knots Plus and two Emergency Fish Hook Removal Techniques! Created by one of the most trusted and respected knot reference publisher in the world. Feel free to email us your comments, suggestions and requests ([email protected]).
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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.