# Duolian: Racket Sports — Rally review. Train smarter. > Racket sports training app for video analysis, technique comparison, and practice planning. (iPhone/iPad app by Duolian.) - Source: https://appshunter.io/ios/app/duolian-racket-sports/id6745462050 (this page in markdown: same URL + `.md`) - Developer: [Duolian](https://appshunter.io/developer/1812354591) - Category: Sports, Education - Price: Free - Age rating: 4+ - Requires: iOS 16.0 · 170 MB - Languages: American English, Chinese (Simplified, China) - Released: 2025-06-28 - Data updated: 2026-09-13 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/duolian-racket-sports/id6745462050/reviews.md ## What is Duolian? Make every practice more focused with Duolian. Built for table tennis and badminton players, Duolian brings match recording, rally review, technique comparison and training records together. Look back at your session and find what to work on next. REVIEW YOUR MATCH, RALLY BY RALLY Record or import match videos. Intelligent rally segmentation turns long recordings into clips that are easier to review. Save your matches and analysis records to revisit your performance. COMPARE YOUR TECHNIQUE Choose a reference movement or compare two of your own videos. Use frame-by-frame playback, skeleton overlays and angle information to spot differences. Cloud-based 3D Body comparison lets you explore movements from different perspectives. KEEP TRACK OF TABLE TENNIS MATCHES Scan a code to start a match with another player, record and confirm scores, then review the match video by rally. BUILD YOUR PRACTICE PLAN Choose table tennis ball-machine drills, adjust training parameters and combine drills into a plan. Review training records and statistics. Compatible hardware is required for ball-machine training. CHOOSE YOUR SPORT Switch between table tennis and badminton to see the relevant training features and records. Match challenges and ball-machine training are table tennis features. DUOLIAN PREMIUM Choose a monthly or annual auto-renewing subscription. Both plans include the same benefits: 120 minutes per week for intelligent analysis and rally segmentation, plus 8 cloud-based 3D Body comparisons per month. See the in-app purchase screen and App Store confirmation for current pricing. Payment is charged to your Apple Account when you confirm your purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the current period ends. Manage or cancel your subscription in your Apple Account settings. You can also restore purchases in the app. Deleting your Duolian account does not cancel your Apple subscription. Local video recording, playback and local technique comparison do not require consent to cloud AI processing. Cloud analysis uploads the relevant media only with your consent. Privacy Policy: https://duolian.cc/privacy-policy.html Terms of Use: https://duolian.cc/terms-of-use.html Support: support@duolian.cc Website: https://duolian.cc ## Key features - Match and rally video recording - Intelligent rally segmentation - Technique comparison with 3D body analysis - Customizable practice plans - Table tennis ball-machine drills - Cross-sport support (table tennis & badminton) ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/duolian-racket-sports/id6745462050/reviews.md ### 1/5 — 闪退 *2026-04-25* 这视频只要一点对比，不管进度到多少都会闪退，有时到了100%了，还会卡死闪退，不知道有啥用 ### 4/5 — 为什么分析的环节就是空白 *2025-07-28* 录完实时挥拍动作后，选择一个之后就是白板了，等了很久也是这样 ### 5/5 — 打羽毛球的宝子们快冲 *2025-06-30* 本来以为只是个普通训练 app，用了才发现是真·开挂神器！它就跟长了眼睛似的，能把我每个挥拍、接球动作拆得明明白白，连我自己都没发现的小毛病，它全给揪出来了！智能对比功能直接拿我和专业选手做参照，还手把手教我怎么改动作，简直是私人教练本练！每次练完生成的进步报告超有仪式感，看着数据一点点变好，动力直接拉满！从新手小白到带学生的教练都能用，训练视频自动存档这点太戳我了，随时复盘超方便～现在打球不打开它都没安全感，入股不亏，闭眼冲就完事！ ### 5/5 — 不错 *2025-06-29* Ai教练更精准，能找出问题。 ### 5/5 — 教学简单易学，科学准确 *2025-06-29* 很新颖的教学方式，用了之后球技提升很大 ### 5/5 — 很有帮助 *2025-06-29* 从基础方面改善动作 力传导更加优秀 ### 5/5 — 有点东西🌚 *2025-06-28* 最有用的地方就是有时候我也不知道问题在哪里，但是拍一下和标准视频一比较，高远球的问题一下子就很清楚的暴露出来了！ ### 5/5 — 羽毛球 *2025-06-27* 非常专业全面的羽毛球教练app！ ## Frequently asked questions about Duolian ### What sports does Duolian support? Duolian is designed for table tennis and badminton players. You can switch between sports to access relevant training features and records. ### How does Duolian help with technique comparison? Duolian allows you to compare two of your own videos or a reference movement. It offers frame-by-frame playback, skeleton overlays, and cloud-based 3D body comparison for detailed analysis. ### Can I use Duolian for practice drills? Yes, Duolian offers table tennis ball-machine drills that you can customize and combine into a practice plan. Compatible hardware is required for ball-machine training. ### What are the benefits of Duolian Premium? Duolian Premium offers 120 minutes per week of intelligent analysis and rally segmentation, plus 8 cloud-based 3D Body comparisons per month. Pricing is available via monthly or annual auto-renewing subscriptions. ### How do I manage my Duolian subscription? Subscriptions renew automatically unless turned off at least 24 hours before the current period ends. You can manage or cancel your subscription in your Apple Account settings. ### Is Duolian available on all Apple devices? Duolian is supported on Apple Watch, iPhone, and iPad, allowing you to train and analyze your game across multiple devices. ### Does Duolian have ads? No, Duolian does not contain advertisements. The app is free to download and use, with optional premium features available through subscription. ### How often is Duolian updated? The latest version of Duolian is 1.1.17, last updated on September 12, 2026. Updates typically include new features, bug fixes, and performance improvements. ## Version history (last 5 releases) ### 1.1.17 — 2026-09-12 Added English across core screens and improved technique comparison and 3D playback. Updated the App Store feature descriptions and screenshots. ### 1.1.16 — 2026-09-09 新增月付和年付会员订阅，支持通过 App Store 购买和恢复购买。完善会员权益同步、分析额度扣除与失败恢复；新增云端 AI 授权管理，完善账号注销和数据清理；修复录像收音问题并提升录制稳定性。 ### 1.1.15 — 2026-08-23 新增前手攻球动作参考、12 周训练打卡热力图、摇一摇问题反馈，以及 Pongbot 项目选择与单项训练编辑；优化 Apple Watch 比赛录制、相机方向、缩略图显示、比赛确认、登录恢复和整体稳定性。 ### 1.1.14 — 2026-08-14 新增乒乓球训练记录统一时间线、长按删除记录和 Pongbot 附近设备切换；优化录制横屏方向、3D 对比后台处理、项目同步与整体稳定性。 ### 1.1.13 — 2026-08-10 新增乒乓球双视频自定义对比、训练全程视频导出，以及 Apple Watch 比赛录制控制与比分提交；优化回合分隔、登录方式提示和整体稳定性。 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-13.*