Comparison

不背单词 vs i西亚斯

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

不背单词

百万原声例句记单词

Free

📚 Education

★ 4.83.5K ratingsView app →

i西亚斯

Free

📚 Education

★ 1.01 ratingsView app →

About

不背单词

Learn English vocabulary with over 1.5 million native speaker example sentences. This app uses a science-based memory curve, root analysis, and authentic phrases to help you remember words effectively. It covers all learning stages and exam needs.

Highlights

1.5 million+ native speaker example sentences
50,000+ phrase collocations
2,000+ root and affix lessons
5,000+ derivation trees
Authentic Collins English-Chinese dictionary
All-stage vocabulary banks
Ebbinghaus memory curve review

Features

Read full description

【内容，非常全面】 ▪ 150万+原声例句，在英美剧纪录片中学单词 ▪ 5万+词组搭配，海量单词用法，活学活用 ▪ 2000+词根词缀，覆盖近2万词条，用英文的偏旁部首串记单词 ▪ 5000+棵派生树，覆盖2万+词条，速记词族神器 ▪ 正版柯林斯英汉双解词典，用英文理解英文 ▪ 全阶段词库，覆盖小学、初中、高中、大学、留学等全阶段需求 ▪ 200+主流词汇书和英语教材词表，配合纸质书，同步学习 ▪ 近义词、反义词、单词变形，关联记忆更高效【考试重点，非常突出】 ▪ 考义高亮，加粗显示考过的词义，常考词义重点学 ▪ 考点标记，加粗显示考过的词组，核心考点重点记 ▪ 17万+条历年真题例句，覆盖中考、高考、四六级、考研和专升本【记忆，非常有效】 ▪ 艾宾浩斯记忆曲线，智能规划复习，高效抗遗忘 ▪ 原声例句，帮你理解单词在真实语境中的用法，理解了才好记 (≧ω≦) ▪ 词根词缀，帮你理解单词的内部结构，理解了才好记 o(^▽^)o ▪ 地道搭配，帮你理解单词的多个词义，理解了才好记 \\(*^▽^*)// ▪ 拼写测试，学完一组拼一拼，会写才肯罢休【坚持，非常容易】 ▪ 签到送酷币，组队打卡奖励更多 ▶不背成绩单 ▪ 200000+ 五星好评 ▪ App Store 首页推荐 ▪ App Store 背单词推荐应用 ▶不背成长关爱热线 ▪ 不背单词应用内：头像 > 更多设置 > 帮助与反馈 ▪ 微博 / 公众号：不背单词App

About

i西亚斯

This is the official mobile application for Zhengzhou Sias University. It provides official information and services for students and faculty.

Highlights

Official university information
Student services
Faculty services
Campus news
University announcements

Features

Read full description

郑州西亚斯学院官方App。

Screenshots

不背单词4 screens

i西亚斯3 screens

Verdict

The call

The clearest difference is review sentiment: 不背单词 at 95% against i西亚斯's 0%. 不背单词 also leads on rating (4.8 vs 1.0) and ratings volume (3.5K vs 1). i西亚斯's advantage is in-app purchases (none vs 100). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 不背单词 sells 100 one-off in-app purchases. i西亚斯 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

不背单词 holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: 不背单词 has 3.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 95% of 不背单词's written reviews are positive against 0% of i西亚斯's.

UpkeepUpdate frequency

不背单词 ships an update every 3 weeks, i西亚斯 every 10 days. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.

Scorecard5 real differences · 5 level

不背单词 versus i西亚斯: the parameters behind the verdict, then further details
Parameter	不背单词	i西亚斯
Price	Free	Free
Rating	4.8 (3.5K ratings) — better	1.0 (1 ratings)
Positive reviews	94.6% of reviews — better	0.0% of reviews
Number of ratings	3.5K — better	1
Update frequency	Every 3 weeks	Every 10 days — better
Ads	No	No
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	Free — better
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	13.0 — better	14.0
Further details — not scored
Size	168 MB	41 MB
Age rating	9+	4+
Developer	Beijing Is-Cool Technology Co., Ltd	Zhengzhou Sias University