Comparison

外研剑桥Join In vs Decibels Meter

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

Head to head
About

外研剑桥Join In

Features
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外研剑桥Join In英语是一款专注5-12岁学生学习工具。 此App针对此年龄段儿童特别设计的互动体验,让学生更轻松掌握小学英语学习内容。 教材及知识汇总,通过提供课文随身听、单词复读机、单词跟读,单词练习、课本点读、海量精品题卷pdf下载打印,给予学生、家长、教师提供便利的教辅软件。 外研剑桥三年级上册,外研剑桥四年级上册,外研剑桥五年级上册,外研剑桥六年级上册 外研剑桥三年级下册,外研剑桥四年级下册,外研剑桥五年级下册,外研剑桥六年级下册 【字词听写】 汇总课文、单元、期中、期末所有需要掌握的生字词,可以自定义语音播报、审阅,成为孩子、家长、教师的好帮手。 【课文随身听】 同步课本各单元听力,音频。与单纯音频播放不同,增加语速调整,中英文对照,播放进度控制声音播放与文本同步。 【单词复读机】 同步课本各单元单词听力,音频。可设置复读次数,自动播放功能。用户可设置显示或隐藏中文。 【单词跟读】 为课后单词表中每个单词做配有图片或视频,让学生更容易理解记忆。为每个单词配一个例句及句子的发音。增加配音功能,让学生的发音与标准发音有对比,方便纠正发音。 【单词练习】 将每单元课后单词每四个为一组,分组进行练习,每个单词进行单独练习,英译中,中译英,单词拼写。 【课本点读】 同步教材课本点读功能,哪里不会点哪里,让学习更简单。 【海量精品题卷pdf下载打印】 教研老师团队根据教材,课文知识点为基础研发相应题型,组成单元、期中、期末等试题卷。家长及老师可免费下载或在线直接打印。 每张pdf试卷都配有听力练习,用户扫码即可听听力音频。每张试卷都配有正确答案,和试卷测试内容分开,放在pdf的最后几页。 试卷不是拷贝自网上,是我们教研团队自主研发。老师及家长可下载打印供自己使用,切勿作为商用目的。 让学习更有趣,让知识更生动! 也希望家长及老师联系客服提供意见,您的建议是我们不断完善、不断进步的动力。 有任何问题,请联系微信客服:holiday9580

About

Decibels Meter

Features
Read full description

Concert Decibel Meter - Your Professional Sound Wave Monitoring Assistant When you're surrounded by the sound waves of a concert or music festival, are you curious about the decibel level? Want to share the electrifying experience with the world? The Concert Decibel Meter is your professional sound wave monitoring assistant. 【Core Functions】 Real-time Decibel Monitoring: Accurately captures and displays the real-time decibel value of the venue. From "rhythm warm-up" to "raging sound waves," it uses the most knowledgeable terms about the venue to intuitively tell you the sound pressure level you're in. Watermark Camera: Built-in camera captures moments directly from the venue. Automatically generates cool watermarks, creating a unique souvenir of your visit. Hardcore Hearing Protection: More than just measurement, it's your intelligent guardian of hearing. When the volume reaches a dangerous level, the app will issue a strong alert, reminding you to immediately activate hearing protection mode.

Screenshots

外研剑桥Join In4 screens
Decibels Meter4 screens

Verdict

The call

The clearest difference is update cadence: Decibels Meter at every 9 days against 外研剑桥Join In's every 2 months. 外研剑桥Join In'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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

外研剑桥Join In ships an update every 2 months, Decibels Meter every 9 days. The most recent releases landed on September 5, 2026 and December 21, 2025 respectively.

Scorecard2 real differences · 4 level
外研剑桥Join In versus Decibels Meter: the parameters behind the verdict, then further details
Parameter外研剑桥Join InDecibels Meter
PriceFreeFree
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size38 MB27 MB
Age rating4+4+
Developer凡 吕剑 罗

In-app purchases

None

外研剑桥Join In

No in-app purchases

None

Decibels Meter

No in-app purchases

Questions

Is 外研剑桥Join In free?
外研剑桥Join In is free to download, with no in-app purchases.
Is Decibels Meter free?
Decibels Meter is free to download, with no in-app purchases.
Do 外研剑桥Join In or Decibels Meter have ads?
Neither 外研剑桥Join In nor Decibels Meter shows ads.
Which is updated more often, 外研剑桥Join In or Decibels Meter?
外研剑桥Join In ships an update every 2 months, and Decibels Meter every 9 days. Most recently, 外研剑桥Join In was updated on September 5, 2026 and Decibels Meter on December 21, 2025.

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