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
HangTime - Hangboard Training
Features
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 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 HangTime - Hangboard Training: map the core Health & Fitness 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
Incorporate user input to create tailored plans.
Assumption to check: Lack of personalization in workouts
Validate with people who use this workflow before building.
Hypothesis 2
Add more detailed performance metrics and analytics.
Assumption to check: Limited tracking metrics
Validate with people who use this workflow before building.
Hypothesis 3
Implement a community feature for sharing progress.
Assumption to check: No social features for motivation
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the subscription model and offer clearer benefits.
Assumption to check: Confusing subscription options
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
Features - Create and customize your own workouts - Easy to use hold selecting using your fingerboard - Specify which finger(s) to use - Share to and do workouts from the community - Add multiple hangboards (from your gym) - Track your progress over time 400+ Hangboard from 100+ Brands 2 Climb, 360 Holds, AIX, Acorn Climbing, Affenholz, Alpidex, Altissimo, Antworks, Art Rocher, ArtLine Climbing Holds, Arête Climbing, Atomik Holds, Awesome Woodys, Beastmaker, Blank Slate Climbing, Bleaustone, Butterfinger Sports, Bäm!, Canigó, Captain Fingerfood, Cilmbnboulder, Concept Climbing, Core Climbing, Crafty Climbing, CrimpMonster, Crimptonite, Crusher Holds, Custom Climbs, DUDES vs. GRAVITY, Danger Buddies, DeWoodstok, DefyTheCrux, Didak, Digital Climbing Holds, Edgy Climbing Holds, Egurre Holds, Entre-Prises, Erzi, Escape Climbing, Euroholds / Rokodromo, Evolv x Kilter, Explore Climbing, Expressions Holds, Fingerschinder, Gecko Holds, Gripmonkeys, HRT Holds, Hold Emporium, Holdz, IseClimb Factory, Iura, JOOD, Kraxl Board, Lapis Holds, Lattice, Lemur Design, Lyons Edge, Makak, Mammut, Max Climbing, Metolius Climbing, Moon Climbing, Mountain Rocks, N8, Nature Climbing, Nicros, NonMollo, Northeast Climb (NEC), OCÚN, Owl Climb, Problemsolver, Puc Series, Rustam Climbing, SAN Power, ScallyWags Climb, Simond / Decathlon, Smartrock, Smog, So iLL, Surfaces for Climbing, T-Wall, Target10a, Tension Climbing, Top Out Climbing, Trango, TriPoint Holds, Two Stones / One Stone, Ucraft, Vola, Volx Holds, WOOD BOARD, Wataaah, White Oak, Witchholds, Woodoclimb, Woodrock, Workshop 19/50, YY Vertical, Zlagboard. Grading Systems - Hueco (V/Verm/Vermin), - Fontainebleau (Font), - USA / Yosemite Decimal System (YDS) - French / Sport - British (Adjectival) - British (Tech) - Ewbank - Brazilian - International Rock Climbing Research Association (IRCRA) - Union Internationale des Associations d'Alpinisme (UIAA) - Union Internationale des Associations d'Alpinisme (UIAA Metric/Decimal) - Watts
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
React Native
Expo
Supabase
Chart.js
@react-navigation/native
expo-notifications
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.
