Comparison

四级单词达人 vs LED Chat

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

Head to head

四级单词达人

大学英语四六级备考专属背单词神器，专为四级考生量身打造

Where Fans Connect & Create

Free

🔧 Utilities

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About

四级单词达人

This app simplifies vocabulary learning for the CET-4 exam. It uses AI to recommend words and track your memory, creating personalized study plans. A daily word widget keeps you on track.

Highlights

AI-powered word recommendations
Latest CET-4 vocabulary list
Daily word widget
Memory tracking
Personalized study plans

Features

Read full description

这是一款简易的背单词app，只需动动手指作出判断，背单词就象打卡一样简单，系统自动记录你的记忆情况，根据你的记忆情况作出学习计划。主要功能： AI推荐智能出词最新大学英语四级大纲词汇 widget小组件，每天一词开机即见学习记录，单词掌握情况轻松查询和管理本app无广告每天一词小组件添加方法：长按手机桌面任意空白位置进入编辑状态，然后点击右上角加号，找到本app即可添加

About

LED Chat

Features

Read full description

Crystal Clear Display – Bright, vivid LED text that grabs attention in any venue, from concerts to fan meetings. Easy to Use – Craft custom messages in seconds, no tech skills needed! Customizable Profiles – Save your favorite chants and slogans for quick access at events. Portable & Reliable – Lightweight design lets you take your support anywhere, anytime. ‌Features:‌ Create & customize LED text messages Adjust brightness for perfect visibility Save multiple fan profiles for different events Real-time preview before displaying Multi-language support for global fans Whether it’s a concert, fan gathering, or special event, ELD lets your voice shine. Stand out, be heard, and make your support unforgettable. ‌Download ELD Today – Because Your Fans Deserve to See Your Passion!

Screenshots

四级单词达人4 screens

LED Chat3 screens

Verdict

The call

The clearest difference is update cadence: LED Chat at every 4 days against 四级单词达人's every 3 months. 四级单词达人's advantage is iOS requirement (11.0 vs 15.0). 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. 四级单词达人 sells 1 one-off in-app purchase and LED Chat sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

四级单词达人 ships an update every 3 months, LED Chat every 4 days. The most recent releases landed on August 22, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 6 level

四级单词达人 versus LED Chat: the parameters behind the verdict, then further details
Parameter	四级单词达人	LED Chat
Price	Free	Free
Positive reviews	100.0% of reviews	—
Update frequency	Every 3 months	Every 4 days — better
Ads	No	No
In-app purchases	Yes	Yes
Monetization	Free with in-app purchases	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	11.0 — better	15.0
Further details — not scored
Size	11 MB	38 MB
Age rating	4+	4+
Developer	摇摇章	文娟唐

In-app purchases

1 purchases

四级单词达人

One-time1

大学英语四级单词达人vip会员$0.99

1 purchases

LED Chat

One-time1

Unlock function$9.99

Questions

Is 四级单词达人 free?

四级单词达人 is free to download, with in-app purchases available.

Is LED Chat free?

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

Do 四级单词达人 or LED Chat have ads?

Neither 四级单词达人 nor LED Chat shows ads.

Which is updated more often, 四级单词达人 or LED Chat?

四级单词达人 ships an update every 3 months, and LED Chat every 4 days. Most recently, 四级单词达人 was updated on August 22, 2026 and LED Chat on September 17, 2026.