COCA词频单词 vs Bernoulli Trial
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
COCA词频单词
Master English vocabulary with a frequency-based approach. This app provides detailed explanations, synonyms, and example sentences for thousands of the most common words, aiding efficient learning and retention.
- 17,631 COCA-ranked words
- Detailed explanations, synonyms, and examples
- Audio pronunciation
- Grouped learning by 1000-word intervals
- Offline dictionary access
- Progress tracking and learned word filtering
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关于英语学习 对于广大的英语学习者来说,不管你是学生,英语专业,还是普通的爱好者;英语单词都是英语学习之路上的一堵墙,难以逾越. 尤其对于非英语母语的人来说,学习英语是从单词学习开始的,单词的学习贯穿着整个英语的学习过程,由单词衍生出发音,读写,语句,形成整个英语体系;由此可见,英语单词的重要性. 你的词汇量,你精准掌握的单词数量,决定了你的英语学习的实际效果;较大的词汇量,能够在你的英语实践中(通常是看美剧,电影,视频等),让你快速融汇贯通;真正的刻在脑海中. 单词学习没有捷径,只有不断的积累;但是借助于好的工具,方法能够让你快速见效,形成体系. 曾经尝试过各类的背单词方式(托福,GRE,四六级等),效果一般;现在看来还是覆盖面不够广,过于局限. 一个偶然的机会接触到COCA(最知名的英语词汇词频统计库),顿时眼前一亮,这不就是我一直寻找的吗. 关于COCA COCA, 全称 Corpus of Contemporary American English,它总结了英语国家使用频率最高的词汇，使用大数据的方法把 1990-2012 年美国最有代表性的报纸，杂志，小说，学术，口语（口语可能是用的电视剧或者脱口秀之类的节目转录的）汇集起来，每部分各占 1/5，生成 4.5 亿单词量语料库。 COCA词频表，是从众多语料库（corpus）中提取，用大数据的方法从各种文体中提取单词，并按照单词出现次数高低进行排序的一个词频表。 掌握前 500 单词，现实生活中能认识 70% 的单词； 掌握前 6000单词，现实生活中能认识 94% 的单词； 掌握前 9000单词，现实生活中能认识 97% 的单词； 掌握前 17631 单词，现实生活中能认识 99% 的单词。 按照这个词汇实用频率的顺序,从最高频率的开始学习,那对于英语的学习是非常高效的,我现在就在通过这个词频表进行复习和查漏. 关于词频单词APP 1.本App内置了17631个单词的词典,经过精细的筛选,去重,整理;按照COCA统计出的频率高低顺序;每个单词具备详细的解释,同义词,例句等. 2.支持单词发音,让你学习单词的同时,熟悉发音,训练自己的听力反馈. 3.本组学习,基本上按照1000个单词一个分组,让你可以分阶段的去学习,复习,牢固的掌握. 4.因为是内置词典,所以App不需要访问网络,节约流量的同时,也省去了网络不稳定的烦恼,可以快速的在手机上刷单词. 5.详细的统计,让你可以清洗的知晓自己的单词掌握情况,每一刻都充满成就感;自动过滤掉已经学会的单词,让你更有正对性去学习,缩小学习范围. QQ:2375671478 EMAIL:2375671478@qq.com
Bernoulli Trial
Instantly solve math homework and prepare for exams with step-by-step solutions. Calculate probabilities, expected values, variance, and standard deviation for Bernoulli trials. Includes histograms, distribution functions, and learning videos.
- Step-by-step math solutions
- Bernoulli trial probability calculation
- Expected value, variance, standard deviation
- Histogram and distribution function
- Curated learning videos
- Feedback on incorrect inputs
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Get your homework done instantly. Prepare for exams stress-free. Free, complete step-by-step solutions. Calculate the probability of success or failure of a Bernoulli trial (e.g. urn problem). Get expected value, variance, and standard deviation, as well as a histogram and distribution function. HOW IT WORKS Enter your values in the correct fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps are always fully available. If you need many solutions in a short time, various purchase options are available. EXTRAS - Histogram & distribution function - Curated learning videos - Feedback on incorrect inputs - Manage your own solutions - App introduction CONTACT Questions and feedback via Discord or directly in the app review.
Screenshots
Verdict
The clearest difference is price: Bernoulli Trial at Free against COCA词频单词's $2.99. Bernoulli Trial also leads on update cadence (every 3 weeks vs every 6 weeks). COCA词频单词's advantage is in-app purchases (none vs 8) and iOS requirement (11.0 vs 15.0). On ads 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
Bernoulli Trial is free to download; COCA词频单词 costs $2.99 up front. Bernoulli Trial sells 8 one-off in-app purchases. COCA词频单词 asks for nothing beyond the download.
COCA词频单词 ships an update every 6 weeks, Bernoulli Trial every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | COCA词频单词 | Bernoulli Trial |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 105 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | 坤 徐 | Glindemann, Sennoun, Langer GbR |
Customer experience
COCA词频单词
Bernoulli Trial
In-app purchases
COCA词频单词
No in-app purchases
Bernoulli Trial
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +150 User Tokens$0.99
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- +2 Convenience Tokens / 6h, max. +4$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Lifetime Access$1.99
- Remove Ads$1.99
