# DUPR vs Master Shin's World Class TKD.

The clearest difference is rating: Master Shin's World Class TKD. at 5.0 against DUPR's 4.1. Master Shin's World Class TKD. also leads on in-app purchases (none vs 19) and ads (none vs shown). DUPR's advantage is update cadence (weekly vs every 19 months) and ratings volume (3.9K vs 8). On price there is nothing between them.

Both are free to download. DUPR sells 17 in-app purchases, starting at $1.99 per month. Master Shin's World Class TKD. asks for nothing beyond the download.

Master Shin's World Class TKD. holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: DUPR has 3.9K ratings behind it against 8, so its average is the more settled of the two.

DUPR ships an update weekly, Master Shin's World Class TKD. every 19 months. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DUPR | Master Shin's World Class TKD. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (3.9K ratings)](https://appshunter.io/ios/app/dupr/id1567932355/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/master-shins-world-class-tkd/id1588788053/reviews)** |
| Number of ratings | **3.9K** | 8 |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 19 months |
| Monetization | Freemium | **Free** |
| Best chart rank | **#46** | — |
| Size | 113 MB | 24 MB |
| Requires iOS | 18.6 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [DUPR LLC](https://appshunter.io/developer/1567932357) | [Dongkwan Shin](https://appshunter.io/developer/1588788055) |

## What reviewers say

### DUPR

[App page](https://appshunter.io/ios/app/dupr/id1567932355)

**Currently charting:** #46 Top Grossing · Sports, #200 Top Free · Sports (US App Store)

Track your pickleball matches and improve your official rating. Find nearby players and teammates based on their DUPR scores and match history. Subscriptions unlock exclusive features and an ad-free experience.

**Highlights:** Log pickleball matches, Official DUPR rating algorithm, Opponent score verification, View match history, Find nearby players, Browse user profiles and ratings

**Features:** Vision Pro support

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DUPR+ | $1.99 | per month |
| DUPR+ | $2.99 | per month |
| DUPR+ | $3.99 | per month |
| DUPR+ | $3.99 | per month |
| DUPR+ | $4.99 | per month |
| DUPR+ | $4.99 | per month |
| DUPR+ | $11.99 | per year |
| DUPR+ | $14.99 | per year |
| DUPR+ | $19.99 | per year |
| DUPR+ | $19.99 | per year |
| DUPR+ | $24.99 | per year |
| DUPR+ | $29.99 | per year |
| DUPR+ | $29.99 | per year |
| DUPR+ | $39.99 | per year |
| DUPR+ | $49.99 | per year |
| DUPR Verified Single Event | $7.99 | one-time |
| DUPR Reset March 2026 | $34.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for finding players of similar level
- 👍 Tracks progress well

**What reviewers complain about**

- 🐛 Buggy and glitchy
- 💸 Excessive ads and monetization
- 🤖 Inaccurate and inconsistent ratings
- 🤯 Poor user experience and navigation

**Reported bugs**

- Email verification not working
- Inability to edit or delete matches
- Freezing and crashes when navigating app

**Requested features**

- Ability to add friends and follow other players
- Improved match validation and score tracking
- More transparency around rating algorithm


### Master Shin's World Class TKD.

[App page](https://appshunter.io/ios/app/master-shins-world-class-tkd/id1588788053)

Access martial arts curriculum videos, class schedules, and event information from a leading Taekwondo provider. Connect with instructors and share your training progress with friends and family.

**Highlights:** Curriculum Videos, Event Updates, Class Schedules, Contact Information, Training Sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DUPR free?

DUPR is free to download, with in-app purchases available.

### Is Master Shin's World Class TKD. free?

Master Shin's World Class TKD. is free to download, with no in-app purchases.

### Which has better reviews, DUPR or Master Shin's World Class TKD.?

Master Shin's World Class TKD. is rated higher. DUPR averages 4.1 out of 5 from 3.9K ratings, while Master Shin's World Class TKD. averages 5.0 from 8 ratings.

### Do DUPR or Master Shin's World Class TKD. have ads?

DUPR shows ads; Master Shin's World Class TKD. does not.

### Which is updated more often, DUPR or Master Shin's World Class TKD.?

DUPR ships an update weekly, and Master Shin's World Class TKD. every 19 months. Most recently, DUPR was updated on October 19, 2026 and Master Shin's World Class TKD. on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*