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
WristTube for YouTube
Discover the world of YouTube videos right on your wrist with WristTube! Now, you can watch any video directly on your watch, including live streams
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
9,654 ratings · Top 30%
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 included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 WristTube for YouTube: 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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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
Provide customizable video quality settings.
Assumption to check: Limited video quality options
Validate with people who use this workflow before building.
Hypothesis 2
Optimize video buffering and loading times.
Assumption to check: Inconsistent playback performance
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced search and filtering options.
Assumption to check: Limited search functionality
Validate with people who use this workflow before building.
Hypothesis 4
Add comment interaction and sharing features.
Assumption to check: Lack of user engagement features
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
Discover the world of YouTube videos right on your wrist with WristTube! Now, you can watch any video directly on your watch, including live streams. Compatible with all Apple Watch models, both GPS and LTE versions, you can still enjoy videos on WristTube with the LTE version without needing to connect to your iPhone, ensuring an uninterrupted experience. This app offers a convenient and intuitive video-watching experience, allowing you to stay updated and manage your content easily from your watch. Key Features: - Watch YouTube Videos: Access and watch YouTube videos in quality ranging from Standard to UHD right on your wrist. - Video player controller: full features including fast forward/rewind, playback speed adjustment, loop video, sleep timer, and more. - Support for watching live videos - Sync with Your YouTube Account: Seamlessly synchronize with your YouTube account to manage your subscriptions, playlists, and liked videos directly from your smartwatch. - Search Videos: Easily search for your favorite videos or discover new content with simple search tools. - Browsing trending videos, top videos, and video statistics. - Show videos from subscribed channels, history, watch later, liked videos and saved playlists - Multiple Quality Options: Enjoy videos with various quality settings, from Standard to UHD, for the best viewing experience. - Audio-Only mode WristTube brings ultimate convenience, allowing you to enjoy YouTube content anytime, anywhere, directly from your smartwatch. Download now and start exploring your favorite videos effortlessly! Detailed subscription information: - 3-day free trial, then weekly subscription ($1.99/week) - Monthly subscription ($2.99/month) - One-time lifetime purchase package ($7.99) Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscription may be cancelled at any time within the iTunes and App Store Apple ID Settings. All prices include applicable local sales taxes. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Support: https://wristtechstudio.com/contact - Privacy Policy: https://wristtechstudio.com/privacy - Terms & Conditions: https://wristtechstudio.com/terms For any question and inquires, please get in touch: [email protected]
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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BUILD KIT DIFFICULTY
Advanced
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.
