Comparison

王羲之十七帖 vs PolyEcho

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

Head to head

About

王羲之十七帖

Features

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《十七帖》是王羲之草书代表作，因卷首由“十七”二字而得名。《十七帖》一直作为学习草书的无上范本，被书家奉为“书中龙象”，是临习草书的不二法门。 --单点动作:显示单字,有书写演示,可手写临习，可导出书写结果 --双点动作:列出该字出现的所有写法 --上下方向划动:显示单列本作基于上野本，共28帖： 01 郗司马帖 02 逸民帖 03 龙保帖 04 丝布衣帖 05 积雪凝寒帖 06 服食帖 07 知足下帖 08 瞻近帖 09 天鼠膏帖 10 朱处仁帖 11 七十帖 12 邛竹杖帖 13 蜀都帖（游目帖） 14 盐井帖 15 省别帖（远宦帖） 16 旦夕帖 17 严君平帖 18 胡母帖 19 儿女帖 20 谯周帖 21 汉时讲堂帖 22 诸从帖 23 成都城池帖 24 旃罽胡桃帖 25 药草帖 26 胡桃帖 27 清晏帖 28 虞安吉帖

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

王羲之十七帖4 screens

PolyEcho4 screens

Verdict

The call

The clearest difference is price: PolyEcho at Free against 王羲之十七帖's $0.99. PolyEcho also leads on update cadence (every 5 days vs every 6 months). 王羲之十七帖's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement 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

PolyEcho is free to download; 王羲之十七帖 costs $0.99 up front. PolyEcho sells 4 in-app purchases, starting at $12.99 per month. 王羲之十七帖 asks for nothing beyond the download.

UpkeepUpdate frequency

王羲之十七帖 ships an update every 6 months, PolyEcho every 5 days. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 4 level

王羲之十七帖 versus PolyEcho: the parameters behind the verdict, then further details
Parameter	王羲之十七帖	PolyEcho
Price	$0.99	Free — better
Positive reviews	100.0% of reviews	—
Update frequency	Every 6 months	Every 5 days — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0 — better	13.0
Further details — not scored
Size	75 MB	207 MB
Age rating	4+	4+
Developer	小龙高	楷博尚

In-app purchases

None

王羲之十七帖

No in-app purchases

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 王羲之十七帖 free?

王羲之十七帖 costs $0.99, with no in-app purchases.

Is PolyEcho free?

PolyEcho is free to download, with in-app purchases available.

Do 王羲之十七帖 or PolyEcho have ads?

Neither 王羲之十七帖 nor PolyEcho shows ads.

Which is updated more often, 王羲之十七帖 or PolyEcho?

王羲之十七帖 ships an update every 6 months, and PolyEcho every 5 days. Most recently, 王羲之十七帖 was updated on October 13, 2026 and PolyEcho on October 16, 2026.