Probability vs 优锐
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Probability
Enhance your decision-making skills by learning to assess probabilities with this app. It offers formulas for problem-solving, note-taking capabilities, and interactive tools like dice and coin tosses for practical learning.
- Probability assessment
- Decision-making improvement
- Problem-solving formulas
- Personalized notes
- Dice and coin toss simulations
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Probability is the key to making decisions under uncertainty, and with our app, you can improve your ability to assess probabilities and make better decisions in life. Our app includes different formulas to help you solve problems and make decisions, as well as the option to take references and write down your own notes about probability. Plus, you can have fun with probability by tossing dice and coins.
优锐
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二维码已广泛应用于购物、支付、娱乐、交际等人们生活的各个领域，充斥我们生活的各个角落，服务并改变着社会的方方面面，一款便捷的二维码工具能有效帮助我们识别或传递重要信息。 - 产品功能介绍 - 【二维码生成】：可将链接或文本信息生成二维码或条形码，一键保存，方便快捷。 【扫码识别】：通过扫描二维码或条形码，即可得到其所包含的字符串或链接。 【扫码/生成记录】：可快速浏览历史记录，支持在应用内直接预览内容，也可快速共享和复制给朋友。
Screenshots
Verdict
The clearest difference is in-app purchases: 优锐 at none against Probability's 1. 优锐 also leads on iOS requirement (12.0 vs 14.0). Probability's advantage is ads (none vs shown). 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. Probability sells 1 one-off in-app purchase. 优锐 asks for nothing beyond the download.
Probability ships an update every 10 days, 优锐 every 2 weeks. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.
| Parameter | Probability | 优锐 |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 days — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 166 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Man Hung Sun | 明慧 陈 |
In-app purchases
Probability
- Upgrade$0.99
优锐
No in-app purchases
