# Double dummy problems vs e乐趣

The clearest difference is in-app purchases: e乐趣 at none against Double dummy problems's 1. e乐趣 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Double dummy problems sells 1 one-off in-app purchase. e乐趣 asks for nothing beyond the download.

Double dummy problems ships an update every 3 weeks, e乐趣 every 11 days. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Double dummy problems | e乐趣 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | — | Free |
| Size | 27 MB | 108 MB |
| Requires iOS | 14.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [丽娜 夏](https://appshunter.io/developer/1084968330) | [海南易趣文化传播有限公司](https://appshunter.io/developer/1811570919) |

## What reviewers say

### Double dummy problems

[App page](https://appshunter.io/ios/app/double-dummy-problems/id1013055806)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| You will pay to remove ads. | $1.99 | one-time |


### e乐趣

[App page](https://appshunter.io/ios/app/e/id6745261118)

This platform is designed for card game enthusiasts, offering a comprehensive tool for both participating in and organizing competitive events. It features intelligent algorithms and innovative tournament formats to ensure fair play and a professional experience for all users.

**Highlights:** Intelligent tournament creation, Automated event scheduling, Cross-platform real-time competition, Easy participation for players, Zero-barrier event organization, Fair play algorithms

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Double dummy problems free?

Double dummy problems is free to download, with in-app purchases available.

### Is e乐趣 free?

e乐趣 is free to download, with no in-app purchases.

### Do Double dummy problems or e乐趣 have ads?

Double dummy problems shows ads; e乐趣 does not.

### Which is updated more often, Double dummy problems or e乐趣?

Double dummy problems ships an update every 3 weeks, and e乐趣 every 11 days. Most recently, Double dummy problems was updated on September 9, 2026 and e乐趣 on September 22, 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.*