Comparison

掌上购电 vs USB扩展屏

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

Head to head

About

掌上购电

Features

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本App旨在为方便用电用户进行电费缴纳，用户通过支付宝对电量进行预存，支付金额为电力物业部门代收

About

USB扩展屏

Features

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USB扩展屏可以将您的iOS设备变成一个便携显示器，通过视频采集卡，直接采集USB数据，支持声音采集，高清无延迟支持手势快速截屏与录屏以下为各设备连接教程： switch+底座 / xbox / ps - 视频采集卡 - iPad/iPhone

Screenshots

掌上购电2 screens

USB扩展屏3 screens

Verdict

The call

The clearest difference is in-app purchases: 掌上购电 at none against USB扩展屏's 1. 掌上购电 also leads on iOS requirement (9.0 vs 17.0). USB扩展屏's advantage is update cadence (daily vs every 3 months). On price, 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. USB扩展屏 sells 1 one-off in-app purchase. 掌上购电 asks for nothing beyond the download.

UpkeepUpdate frequency

掌上购电 ships an update every 3 months, USB扩展屏 daily. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 3 level

掌上购电 versus USB扩展屏: the parameters behind the verdict, then further details
Parameter	掌上购电	USB扩展屏
Price	Free	Free
Update frequency	Every 3 months	Daily — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	9.0 — better	17.0
Further details — not scored
Size	42 MB	0 MB
Age rating	4+	4+
Developer	SHANGHAI INBESTECH CO.,LTD	晓满李