# Duolian: Ping Pong & Badminton — Table Tennis Video Analysis

> Sports video analysis app for table tennis and badminton players. (iPhone/iPad app by Duolian.)

- Source: https://appshunter.io/ios/app/duolian-ping-pong-and-badminton/id6745462050 (this page in markdown: same URL + `.md`)
- Developer: [Duolian](https://appshunter.io/developer/1812354591)
- Category: Sports, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 147 MB
- Languages: Chinese (Simplified, China), American English
- Released: 2025-06-24
- Data updated: 2026-11-06
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/duolian-ping-pong-and-badminton/id6745462050/reviews.md

## What is Duolian?

Make every practice more focused with Duolian.

Built for table tennis and badminton players, Duolian brings rally review, technique comparison, ball-machine training and training records together. Import a video and let Duolian do the rest, then look back at your session and find what to work on next.

REVIEW YOUR MATCH, RALLY BY RALLY
Import a match video and Duolian cuts it into rallies, skipping the pauses between points, so a long recording becomes clips that are easy 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.

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. Ball-machine training is a table tennis feature.

DUOLIAN PREMIUM
Choose a monthly or annual auto-renewing subscription. Both plans include the same benefits: 4 hours per week for intelligent analysis and rally segmentation, plus 16 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 playback and local technique comparison do not require consent to cloud 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

- Rally review and segmentation
- Technique comparison with 3D body overlays
- Ball-machine training drills
- Training records and statistics
- Switch between table tennis and badminton modes
- Cloud-based analysis

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Duolian Premium Monthly | $12.00 | per month |
| Duolian Premium Yearly | $98.00 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Match Analysis 60-Min Pack | $2.99 | one-time |
| 3D Body 5-Use Pack | $3.99 | one-time |
| New Player 10-Hour Analysis Pack | $7.99 | one-time |
| Match Analysis 10-Hour Pack | $14.99 | one-time |
| Match Analysis 5-Hour Pack | $9.99 | one-time |


## Is Duolian safe?

Not enough ratings yet to assess Duolian.

## Is Duolian legit?

Duolian: Ping Pong & Badminton appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Duolian is 65 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/duolian-ping-pong-and-badminton/id6745462050/reviews.md

### 4/5 — 自定义对比功能闪退

*2026-09-14*

这个问题能不能解决一下，想法很好，也是冲着这个功能来购买会员的。

### 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 supports both table tennis and badminton. You can switch between sport modes to access relevant training features and records. Ball-machine training is specifically a feature for table tennis.

### 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 to highlight differences and explore movements from various perspectives.

### What are the benefits of Duolian Premium?

Duolian Premium offers 4 hours per week of intelligent analysis and rally segmentation, along with 16 cloud-based 3D Body comparisons per month. This allows for more in-depth review and analysis of your performance.

### How can 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. Purchases can also be restored within the app.

### Is Duolian suitable for beginners?

Duolian is designed for players looking to improve their technique. While it offers advanced analysis tools, its rally review and training record features can benefit players of all levels seeking focused practice.

### Does Duolian require compatible hardware for all features?

Compatible hardware is required specifically for ball-machine training. Other features like local playback and local technique comparison do not require additional hardware.

### How does Duolian handle user privacy for video analysis?

Local playback and local technique comparison do not require consent for cloud processing. Cloud analysis only uploads relevant media with your explicit consent, ensuring your privacy.

### What is the update frequency for Duolian?

The app was last updated on November 4, 2026, indicating ongoing development and support. Users can expect regular updates to improve features and performance.

## Version history (last 5 releases)

### 1.1.25 — 2026-11-04

· New match statistics: once you mark who won rallies, see points won, streaks, rally length and more
· A match card shows the share of points won once 15 rallies are marked
· Things you can tap or drag show you how, until you have used them once
· A liked rally whose match video is gone can still be pinched and panned
· When the storage server can't be reached, imports upload another way instead of stopping
· Fix: an iPhone photo could not be set as the player card photo

### 1.1.24 — 2026-11-02

· A match now opens rally by rally, with the full video one tap away
· Tap a player to mark who won the rally, tap again to undo. Scores are gone
· Drag the time strip into a gap to add a rally the splitter missed
· See what's drawn on the video before saving or sharing rallies; rally links show it too
· Leave the app during an export and it carries on when you return
· With a rallies-only cut, you can still watch the full video and adjust rallies while the original is on your phone
· Matches sent to you download in the background
· Fixes: videos still in Photos shown as unavailable, and a freeze when deleting a match played from Photos

### 1.1.23 — 2026-10-28

· Sharing is simpler: one link for your opponent and spectators, or send just a few rallies. Every link you sent is in Profile › Shared links
· Rallies only: keep just the rallies and delete the original to free space. Members get it in the cloud, back on a new phone too
· Add a rally the splitter missed
· Tap who won each rally to keep the score; it stays with your account
· Imports keep uploading with the phone locked or the app in the background (iOS 26), and a locked phone no longer signs you out mid-import
· Gear on the name card page, and you choose the four fields your card shows; new Yasaka and DMS equipment
· The filming guide shows where to put the phone
· The iOS 26 tab bar, plus fixes

### 1.1.22 — 2026-10-23

- Padel joins table tennis and badminton: import a video and get rallies and players automatically.
- A match filmed as several videos is now one record, played rally by rally.
- Saved videos say which match and game they come from; the game can be left off.
- The app asks your sport once and keeps it with your account, along with which player you are.
- A wrong video can be cancelled while it is being imported.
- A new purchase page puts the membership and time packs side by side with what an hour costs each way. New: a 10-hour new-player pack and 5-hour and 10-hour packs; purchased time never expires.
- Form check shows where to place the phone and asks for a new take when a stroke runs over 3 seconds.
- Fixes: rally playback crashing on some phones, short looping clips not moving, the ball machine counting down twice, and dropped frames when dragging the 3D full-screen timeline.

### 1.1.21 — 2026-10-19

· Send a match to your opponent: once they claim themselves, you can see each other's name card
· Label rallies (such as "forehand error"); combine favourite rallies from different matches into one video, with or without player marks
· Merge a wrongly split game from any of its rallies; Matches shows your own career figures
· Redesigned posture correction: in table tennis, adjust and confirm the contact point, and see progress by technique
· New table tennis ball machine flow
· Find a match's deleted video again in Photos
· Darker player and match pages
· Bug fixes

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*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 2026-11-06.*