Double dummy problems vs ALPHA_WALL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Double dummy problems
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To provide hundreds of double dummy bridge problems for you to solve. The app gives one solution, it is not the only one, you can work out your own solutions and save them.
ALPHA_WALL
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与攀岩板协同使用的app应用，包含以下功能： 制定岩板线路点、角度、难度等，并与其他用户共享线路的信息； 连接岩板设备，将线路岩点投射在岩板设备上，提供即刻攀岩体验； 专为不同人群，设有针对性的线路课程；
Screenshots
Verdict
The clearest difference is in-app purchases: ALPHA_WALL at none against Double dummy problems's 1. ALPHA_WALL also leads on ads (none vs shown) and iOS requirement (12.0 vs 14.1). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Double dummy problems sells 1 one-off in-app purchase. ALPHA_WALL asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.
| Parameter | Double dummy problems | ALPHA_WALL |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | 丽娜 夏 | 宁波昂赛体育发展有限公司 |
In-app purchases
Double dummy problems
- You will pay to remove ads.$1.99
ALPHA_WALL
No in-app purchases
Questions
Is Double dummy problems free?
Is ALPHA_WALL free?
Do Double dummy problems or ALPHA_WALL have ads?
Which is updated more often, Double dummy problems or ALPHA_WALL?
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