Project 1: FitGuide

1. Idea brainstorming

• Build a categorized "workout selection" system: A prominent pain point plaguing numerous home fitness enthusiasts lies in workout selection. Flooded with massive, disorganized online fitness videos, users tend to make inappropriate training choices, struggle to keep up with workout intensity, and suffer from low exercise efficiency.
• Build a standardized "workout response manual" system: Home workouts lack professional real-time supervision. Traditional video platforms only provide movement demonstrations without safety interpretation. FitGuide provides a medicine-style instruction manual for each video, clearly defining normal reactions, warning signs, and corrective actions, helping users self-check safely without coaches.
• Establish a structured community with filtered valuable comments: As short-video fitness becomes mainstream, users need more than just videos—they need trustworthy experience sharing. Existing comment sections are chaotic and low-quality. FitGuide uses tag filtering, usefulness sorting, and categorized comment types to precipitate real, safe, and effective fitness feedback, forming a professional, beginner-friendly vertical community.

2. Market and potential user investigation

• Policy and market background: Data from China's General Administration of Sport shows that 69.1% of residents aged 7+ exercise weekly. Fitness app users have exceeded 300 million. However, only 48.1% of regular exercisers receive any professional guidance. Meanwhile, gym membership penetration is just 6%, with the average annual fee reaching ¥3,838.5 (2025). Over 94% of exercisers rely on home or non-venue workouts.
• Potential user investigation: A large number of people cannot or will not go to professional venues due to high costs, uneven facility distribution, or social anxiety. This group urgently needs a solution that provides scientific training guidance and post-workout feedback. FitGuide fills this gap with curated content, structured guidance, and a supportive community.

3. Design and prototyping

FitGuide features a clean, user-friendly interface with a focus on simplicity and functionality. The app includes workout selection, real-time guidance, and community features.

4. Implementation

The platform is built using modern web technologies, ensuring a smooth user experience across devices. It integrates with fitness trackers and provides personalized workout recommendations based on user data.

5. Promotion strategy

• Product Positioning: FitGuide is positioned as a "scientific home workout companion", with core differentiators being "curated content + structured comment section + medicine-leaflet-style post-workout guide". It solves the key pain points of over 190 million home exercisers who lack professional guidance: "what to work out" and "whether you're doing it right".
• Target Market: Focus on the 150-180 million people who "have no access to professional venues" (due to long commutes, high membership fees, lack of facilities, etc.). Initial entry targets young female white-collar workers and students aged 18-25 in first- and second-tier cities.
• Promotion Channels: Content marketing on Xiaohongshu / Douyin, KOL collaborations with fitness influencers, and wearable integration with devices like Xiaomi Band and Huawei Health.
• Conversion Strategy: Adopt a Freemium model (basic features free, premium features paid), offering a free first-month trial of the full guide features to lower the entry barrier.

Project 2: Skiipal

1. Idea brainstorming

• Create a one-stop app for skiers: One can meet various needs of skiers on a single webpage, such as finding companions, forming groups, and booking qualified instructors. There's no need to spend time and effort searching independently.
• Solve the problems of messy information in WeChat groups and inefficient coordination: Skepticism behavior usually occurs in WeChat groups. The valuable information is often overshadowed by numerous messages, resulting in low efficiency. A website is needed that focuses on the needs of skiers, such as carpooling, accommodation sharing, group counseling and on-site meetings, etc. Skiers can precisely filter the corresponding services according to their needs.
• Build real-time location, team management, and credit rating systems: Use technical functions to solve problems such as losing companions, unreliable partners, and unqualified coaches to improve safety and experience.

2. Market and potential user investigation

• Policy and market background: National policies strongly support ice-snow tourism, smart sports and youth training, providing a good policy environment for one-stop ski platforms. The Beijing Winter Olympics motivated 346 million people to participate in ice and snow sports, with a participation rate over 24%. The post-Olympic economy continues to grow, with a target scale of ¥1.2 trillion by 2027 and ¥1.5 trillion by 2030. The ski service market is expanding quickly, but integrated team-up, booking and safety management platforms are still scarce, with huge market gaps.
• Potential user investigation: The user group ranges from professional athletes to a wide variety of recreational skiers. This includes casual skiers, beginners, intermediate/advanced riders, indoor ski resort visitors, and experience-oriented consumers.

3. Design and prototyping

• Visual style: The main color is snow white, while the buttons and highlighted areas are in icy blue. The overall style is fresh and has a technological feel, perfectly matching the skiing environment. The core functions are mainly composed of high-contrast color blocks and icons.
• Web page design:
  • Login & Home page: The home page integrates a map and a card-style display of nearby team information. It also provides an entry for posting requests and is accompanied by a bottom navigation bar consisting of five modules: Home, Booking, Coach, Messages, and My Profile.
  • Booking section: The Booking section is divided into four core scenarios: carpooling, room sharing, coach sharing, and free booking.
  • Coach section: The Coach section presents coach information in card form, along with the proportion of coaches on duty at each ski resort.
  • Messages section: The Messages section aggregates successful notifications, invitation information, system announcements, and activity reminders.
  • My Profile: The My Profile covers personal information, skiing history, and recent team-formation records.

4. Implementation

• HTML Structure: Build the app framework of Skiipal, dividing it into the home page, booking session, coach section, messages, and my profile.
• CSS Styles: The main color scheme is snow white and light gray, while the buttons and highlighted areas are blue. The overall style is fresh and has a technological feel, which is in line with the skiing scene.
• JavaScript: The bottom navigation bar enables page switching; clicking the button will take you to the corresponding page or open a pop-up window.
• Details: Add login page, registration page, notification and reminder function for scrolling messages, and beautify the page while keeping the functionality and structure intact.

5. Promotion strategy

• Cold-Start User Acquisition Strategy:
  • Ski Resort Channel Cooperation: Establish official partnerships with ski resorts and indoor ski centers nationwide; place QR code materials in lobbies, rental shops, and rest areas to guide downloads and registrations.
  • KOL/KOC Grassroots Marketing: Invite ski bloggers, coaches, and club founders to create demo videos; publish platform tutorials, team-up cases, and safety feature demos on Douyin, Xiaohongshu, and WeChat Channels.
  • Precision Community Penetration: Join national ski WeChat groups, QQ groups, and Douban groups; offer free team-up, carpool, and accommodation-sharing tools to solve cluttered information problems.
• User Growth & Referral Strategy:
  • Referral Rewards Program: Existing users who invite new registrations earn points, coach coupons, and free team-up credits for both sides.
  • New User Activation Benefits: New registrants receive first-order coach discounts and free carpools to boost initial conversions.
  • Scenario-Based Virality: After successful team formation, prompt users to share team posters on social media with auto-generated routes and member details for organic growth.
• Branding & Retention Strategy:
  • Differentiated Brand Positioning: Highlight safe skiing as the core selling point, emphasizing real-time location, credit rating, and certified coaches to stand apart from generic social apps.
  • User Retention & Repurchase: Build a membership system with tiers based on ski trips, team-ups, and credit scores, offering discounts, priority support, and exclusive matching.
  • Reputation & Trust Building: Display coach certifications, real user reviews, and safety terms to reduce trust barriers.

Project 3: TennisLink

1. Idea brainstorming

• Create a one-stop web platform for tennis players and coaches: Meet core demands of tennis lovers in one platform: finding partners, booking lessons, analyzing techniques, and social interaction. Users no longer need to search across scattered channels for information and services.
• Addressing the pain points of making tennis matches: A large number of tennis enthusiasts (especially female users accounting for 44% of the new population and the vast number of novice players) are facing the problem of "difficulty in making tennis matches". The current methods of making matches mostly rely on scattered WeChat groups or introductions by acquaintances in person, with low transparency of information and low efficiency.
• Build AI-powered action analysis: Tennis is a highly technical sport. Although it has a large number of participants, professional coaching resources are unevenly distributed and expensive (in first-tier cities, it is generally between 300-500 yuan per hour). Most amateur players lack low-cost and frequent channels for technical feedback.
• Establish a vertical community that integrates technological discussions, equipment evaluations, fashion, and other diversified content: As the Generation Z becomes the main consumer force, their demand for tennis has shifted from pure competition to "lifestyle" and "social currency".

2. Market and potential user investigation

• Policy and market background: Tennis is one of the most popular racket sports in the world, with a growing participation rate in China. The market for tennis equipment, lessons, and facilities is expanding rapidly.
• Potential user investigation: The user group includes tennis enthusiasts of all levels, from beginners to advanced players, as well as coaches and tennis facilities.

3. Design and prototyping

• Visual style: The main color is a combination of tennis green and white, with accents of blue for interactive elements. The overall style is clean, professional, and sporty, reflecting the elegance and competitiveness of tennis.
• Web page design:
  • Match Page: Includes tabs for My Matches, Post a Match, and Find a Partner. Features event cards with details, edit/delete functionality, and a payment modal for coach booking.
  • Homepage: Includes a welcome message, a list of recent events, and recommendations for popular coaches/posts.
  • AI Analysis: Two-column layout with video upload/preview area and analysis button on the left, and analysis history list and detailed results on the right.
  • Community: Category filter buttons and post creation button at the top, followed by the post list. Clicking a post card opens a detail modal with full content, comment list, and comment input box.
  • Profile: Personal information display section with avatar, ID, statistics, skill progress bars, and edit profile modal.

4. Implementation

• HTML Structure: Build the app framework with pages for match management, homepage, AI analysis, community, and profile.
• CSS Styles: Use Tailwind CSS for responsive design, with a clean, professional look that reflects the sport of tennis.
• JavaScript:
  • Tab switching functionality for match management
  • Event creation, editing, and deletion
  • Coach booking and payment modal
  • AI analysis simulation
  • Community post interactions (liking, commenting)
  • Profile editing and avatar upload
• Debug: Add AI analysis icon to the bottom navigation bar, adjust video aspect ratio, and ensure real images for avatars.

5. Promotion strategy

TennisLink will adopt a targeted promotion strategy combining online content marketing, offline scene cooperation, and community operation. We will cooperate with tennis clubs, colleges, and venues, launch new-user incentives for partner matching and coach booking, and promote AI motion analysis highlights through sports influencers and short-video platforms. Meanwhile, we will carry out online challenges and offline experience activities to activate user participation, expand brand influence among tennis enthusiasts and young groups.