Comparison

句问 vs PolyEcho

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

Head to head
About

句问

Features
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我们知道学习英语不仅仅是记住单词和语法规则,更重要的是理解和应用。 “句问”旨在为你在学习英语的道路上提供1v1私教服务,任何时间、任何地点、任何形式的材料(无论电子版还是纸质版)都可以很方便地对遇到的难句进行【任何方面】的提问。 在这里,您将会与三位AI英语教师"Eli","John","Tim"交流,他们拥有丰富的教学经验,能对你的每一个疑问给出专业的解答,可以针对一个句子问【任何问题】同时不会因为问题太简单/奇怪而有任何心理负担~~ 【拍照识句】 是否经常在阅读英文材料时遇到难以理解的句子?只需轻轻一拍,句问 通过先进的计算机视觉技术,会即刻将照片中的文字识别出来,并交给私教老师进行解答。 【资料选句】 为了使您的学习更高效,句问 内置了近五年的考研真题和近10年的大学英语四级真题。通过首字母快速检索,以最快的速度对该句进行学习。 【快捷提问】 当你在其他应用中复制了有疑问的句子并切换回句问,我们会立刻弹出一个窗口,询问是否需要对此句子进行提问。 【句库复习】 与私教老师的所有对话都可以保存在句库中,并且还可以标记为“重点复习”。句问 将根据艾宾浩斯记忆曲线为您安排最佳的复习时间点,并在到达时间点时通知您,确保您真正掌握它们。

About

PolyEcho

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学外语不想再从香蕉苹果天气问路开始? 让我们直接从自己感兴趣的话题开始,让ai把任何外语的内容都降低到能理解的程度,直接把自己丢入另一语言的世界里吧! 【核心功能】 1. 单词学习,采用延伸出各种文化含义的词典,单词组成的最小语境故事,让单词成为另一语言世界鲜活的向导,不再是无意义的符号 2. AI对话功能,将各种有趣但外语学习者难以全然理解的内容转换成易于理解的对话,回到人类的对话本能,辅以AI的润色讲解与翻译,让人们得以在新技术的帮助下,直接补足自己的语言水平开始进行有意义的对话,进行更有意义、成就感的学习。 【使用条款】:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

句问4 screens
PolyEcho4 screens

Verdict

The call

The clearest difference is update cadence: PolyEcho at every 5 days against 句问's fortnightly. On price, ads, in-app purchases 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. 句问 sells 1 one-off in-app purchase and PolyEcho sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

句问 ships an update fortnightly, PolyEcho every 5 days. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 5 level
句问 versus PolyEcho: the parameters behind the verdict, then further details
Parameter句问PolyEcho
PriceFreeFree
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.413.0 — better
Further details — not scored
Size23 MB207 MB
Age rating4+4+
Developer增宝 王楷博 尚

In-app purchases

1 purchases

句问

One-time1
  • 120$0.99
4 purchases

PolyEcho

Subscriptions3
  • Monthly Subscription$12.991 Month
  • Semi-Annual Subscription$59.996 Months
  • Annual Subscription$99.991 Year
One-time1
  • 5-Time Conversation Credit$2.99

Questions

Is 句问 free?
句问 is free to download, with in-app purchases available.
Is PolyEcho free?
PolyEcho is free to download, with in-app purchases available.
Do 句问 or PolyEcho have ads?
Neither 句问 nor PolyEcho shows ads.
Which is updated more often, 句问 or PolyEcho?
句问 ships an update fortnightly, and PolyEcho every 5 days. Most recently, 句问 was updated on October 8, 2026 and PolyEcho on September 30, 2026.

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