App Overview

有蓝 icon

有蓝

熠华 姚 · Sports

Youlan is an AI-powered basketball shooting analysis app for players, trainers, and coaches

$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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What's included15 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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Feature spec

Goal: Send a clear invoice after finishing a job.

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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.

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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 social features for users to share progress and challenge friends.

Assumption to check: Lack of user engagement features like social sharing or challenges

Validate with people who use this workflow before building.

Hypothesis 2

Offer a wider range of training types and customizable training plans.

Assumption to check: Limited training types and flexibility

Validate with people who use this workflow before building.

Hypothesis 3

Implement a guided onboarding process to help new users understand the app.

Assumption to check: Poor onboarding experience

Validate with people who use this workflow before building.

Hypothesis 4

Add a way for users to submit feedback or report issues directly within the app.

Assumption to check: No feedback mechanism for users

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

Youlan is an AI-powered basketball shooting analysis app for players, trainers, and coaches. Record or select a side-view shooting video, and the app automatically identifies the full shooting motion and generates analysis across rhythm, posture, ball-body coordination, and release parameters. Unlike simple video replay, Youlan breaks your shot into data you can observe, compare, and review. You can view an overall score, loading and lift rhythm, knee and hip angle changes, upper-arm and forearm angles, elbow lift and extension range, ball release angle, and other key metrics, then receive prioritized suggestions for improvement. Key features: - On-device video analysis: after you choose a side-view shooting video, the core analysis is completed locally on your device. Videos are not uploaded to a server during the standard analysis flow. - Shooting phase recognition: automatically analyzes loading, lift, release, and follow-through phases to help you understand your power rhythm. - Posture and release metrics: quantifies key motion parameters such as knee angle, hip angle, arm angles, release angle, and ball-body coordination rhythm. - AI training suggestions: generates practical training advice based on metric deviations and highlights the highest-priority adjustments. - Standard model comparison: compares your motion metrics with a standard shooting model to show similarity and major differences. - Training history: saves local analysis records, tracks score trends, and compares changes between two sessions. - Privacy-friendly: local analysis is available without account registration, and records are managed by you on your device. Recording tips: - Use a side view, preferably from the shooting-hand side. - Keep the phone fixed and avoid following the player with the camera. - Keep the full body in frame, from the set position through landing. - Use good lighting and a clean background, and keep each video focused on one complete shot whenever possible. Youlan is designed for daily shooting practice, personal form review, coach-assisted teaching, and progress tracking over time. It is not a replacement for a coach's judgment; it helps turn "something feels off" into clearer motion data and training priorities.

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Screenshots

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Set boundaries

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Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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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.