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
Boulder Trainer
With Boulder Trainer you can create your own workouts which will make your training more efficient.
$7.99 · In-app purchases
PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
855 ratings · Top 15%
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 Boulder Trainer: 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
Add more customizable workout parameters and templates.
Assumption to check: Limited workout tracking features
Validate with people who use this workflow before building.
Hypothesis 2
Implement more intuitive navigation and screen layouts.
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate social sharing and community challenges.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Add features for workout reminders and goal notifications.
Assumption to check: No progress reminders
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
With Boulder Trainer you can create your own workouts which will make your training more efficient. This app is very flexible, you can even use it for a freeletics exercises. Easy to setup: Boulder Trainer comes with more than 70 preset fingerboards. Boulder Trainer will help you to create your own exercises and getting better in climbing and bouldering. Features: + Voice instructions for precise exercise timings + You can save your plans online an share them with friends + Training reminder: reminds you when it's time for your next training + Tips for healthy training execution + Manage multiple training plans More than 70 hangboards are already available as a preset board in Boulder Trainer: + Metolius Project + Metolius Wood Grips Compact + Metolius Wood Grips Training + Metolius Wood Grips II Compact + Metolius Wood Grips II Deluxe + Metolius Contact + Metolius Simulator 3D + Metolius Rockrings + Metolius Foundry + Campus Blocks + Campus Rungs + Lite Rail + Prime Rib + Beastmaker 1000 + Beastmaker 2000 + Bergfreunde Flash + Core Fingerboarad + Moon Fingerboard + Moon Phat Boy + OCUN Fingerboard + So iLL Blister + So iLL Wood Blister + So iLL Reaper + So iLL Iron Palm + So iLL Mini Palm + So iLL SlopeyMon + So iLL Boost + So iLL Remedy + So iLL Hängers + Power Ant Mini + Antworks Strong Ant 1 + Antworks Strong Ant 2 (new and old version) + Antworks Strong Ant 3 + Antworks Strong Ant 4 Solo + EPUSA/Kineboard Hang Time + EPUSA/Kineboard Training Board + Trango Rock Prodigy + Trango Rock Prodigy Forge + Crusher Faceon + Crusher Megarail + Crusher Holds Matrix + Crusher Holds Mission Portable + Ascend X8 + Progression by Eva López + Transgression by Eva López + Transformer Starr von Wataaah + Problemsolver Hanzo + Problemsolver Trainingsboard + Sic Grips Pocket Rock + MAX CLIMBING + Tension Flash + Tension Grindstone + Tension Grindstone Pro + Kraxl Classic + Kraxl Portable + Kraxl Rock + Kraxl Xtrem + Crimpmonster + Vola Hangboard + Captain Fingerfood + ALPIDEX PRO 2.0 + ERZI small + ERZI medium + ERZI large + ERZI CAMPUS + Griptonite smartrock + PUC II Domini + Ultimate nicros + Warrior nicros + Decathlon Ballsy + Kraxel To Go + EVOLUTION (dein-klettershop.de) + BB Sport Pro (dein-klettershop.de) + ALPIDEX Large + All Chalk No Action by SoiLL + Grindstone Mk2 + Revolution-Grillito Your board is missing? Write me at [email protected] Developer Statement: When I bought my first fingerboard, I was annoyed from the fact that there was no reasonable description for the workout or how to use the board, so I created the Boulder Trainer app, which supports the workout and motivates. Please note that Boulder Trainer is a small private project, which I started by my own and I'm trying to keeping it alive and professional which is not always as easy as it appears. Like Boulder Trainer on Facebook: www.facebook.com/BoulderTrainer Supported by: + Metolius Climbing: www.metoliusclimbing.com + Beastmaker: www.beastmaker.co.uk + Bergfreunde: www.bergfreunde.de + Core Fingerboard: www.coreclimbing.co.uk + Moon Climbing: www.moonclimbing.com + OCUN: www.ocun.cz/en + So iLL: www.soillholds.com + ant works: www.antworks.com
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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
Victory Native
React Navigation
Zustand
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.
