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.
App Overview
Dangle Time
You want better hands, sweet dekes, and ankle breaking moves
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
130 ratings · Top 5%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Dangle Time: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Implement user-generated challenges and regular updates.
Assumption to check: Limited variety of challenges and content updates
Validate with people who use this workflow before building.
Hypothesis 2
Add better tracking and visualizations for skill improvement.
Assumption to check: Users report difficulty in tracking progress
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer information on subscription benefits and options.
Assumption to check: Some users find the subscription model unclear
Validate with people who use this workflow before building.
Hypothesis 4
Consider a premium ad-free experience.
Assumption to check: In-app ads can disrupt the user experience
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
You want better hands, sweet dekes, and ankle breaking moves. Practice makes perfect, but what are you going to practice? The same old stickhandling drills get boring and you can't afford a private stickhandling instructor. Well.... you can now! DangleTime is your private stickhandling coach on your phone. Anytime you want to work on your stickhandling just pull out your phone and get training. The app keeps track of your "DangleTime" which is the amount of time you spend practicing using the app. This time can be shared and compared with friends. Who can get the highest DangleTime? The higher your DangleTime the more you can level up, go from a Duster to an All-Star! The app comes with 3 free training packs. Each training pack contains 8 stickhandling drills. When you select a training pack a drill will play for 20 seconds with a 10 second break and then the next drill will play until all drills in that pack have played. These times can be adjusted in the settings menu. If you'd like more stickhandling drills you can purchase them and continue to challenge yourself and improve your stickhandling. All drills are demonstrated by Jeremy Rupke from How To Hockey with plans to add new drill packs from more hockey instructors. Show me your DangleTime with #DangleTime on Instagram and Twitter and follow me @howtohockey
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
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Axios
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BUILD KIT DIFFICULTY
Intermediate
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.
