Comparison

WFワットチェッカー vs FlashDrop

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

Head to head
About

WFワットチェッカー

Monitor your home's electricity consumption in real-time via your smartphone. Track power usage, voltage, and current, with options to view historical data in graphs and export it to CSV. Remotely control power to connected devices.

Highlights
  • Real-time power consumption display
  • Convert usage to electricity cost and CO2 emissions
  • Graph historical usage (hourly, daily, monthly)
  • Export measurement data to CSV
  • Remote power ON/OFF control
Features
Read full description

ラトックシステムのWi-FiワットチェッカーRS-WFWATTCH1専用アプリ。 消費電力、電圧、電流、電気料金などをスマホからリアルタイムでチェック。 グラフ表示やCSV書き出し、電源ON/OFFも可能。 ■主な機能 消費電力をリアルタイム表示 消費電力量を電気料金、CO2排出量に換算表示 1時間単位、1日、1か月単位で推移をグラフ表示 測定データのCSV書出し スマホからの電源ON/OFF

About

FlashDrop

Features
Read full description

FlashDrop is a simple, secure, and fast file-sharing app. Just enter the same Room ID to instantly share any file—photos, videos, documents, and more. 【Key Features】 Simple sharing via Room ID - Just enter a Room ID of 1 to 16 characters - Share files with anyone who enters the same ID - Automatically saves previously used Room IDs P2P (Peer-to-Peer) Connection - Direct data transfer between devices - High speed since it bypasses servers - Emphasizes privacy and security Supports Diverse File Formats - Photos/Videos: Automatically saved to your camera roll - Documents: Saved to your download folder - Text messages: Securely send sensitive info like passwords Real-time transfer status display - Check transfer progress in real time - Shows file size and transfer speed - Includes cancel function Batch send multiple files - Select up to 20 files simultaneously - Supports drag-and-drop - Instantly share photos taken with your camera 【Useful Scenarios】 • Sharing photos and videos with friends and family • Quickly distributing meeting materials • Transferring files between devices • Sharing large files • Securely sending passwords and authentication codes 【Reliable Privacy Protection】 - Files are never stored on servers - Direct peer-to-peer transfers between devices - Room IDs persist after use for easy future access - All communications are encrypted for secure transfer 【Supported File Formats】 Images: JPEG, PNG, GIF, HEIC, etc. Videos: MP4, MOV, AVI, etc. Documents: PDF, DOCX, XLSX, PPTX, etc. Others: ZIP, TXT, CSV, etc. - All file formats supported 【How to Use】 1. Launch the app and enter the Room ID 2. Have the recipient enter the same Room ID 3. Select files and tap the Send button 4. Transfer starts automatically once the recipient approves 【Recommended Environment】 - Recommended for use on Wi-Fi (for large files) - Compatible with iOS 14.0 or later - Available on both iPad and iPhone Terms of Service: https://flash-drop.web.app/terms_en.html Privacy Policy: https://flash-drop.web.app/privacy_en.html

Screenshots

WFワットチェッカー3 screens
FlashDrop3 screens

Verdict

The call

The clearest difference is in-app purchases: WFワットチェッカー at none against FlashDrop's 2. WFワットチェッカー also leads on ads (none vs shown). FlashDrop's advantage is update cadence (every 10 days vs every 2 months). On price, 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

Both are free to download. FlashDrop sells 2 in-app purchases, starting at $1.99 per month. WFワットチェッカー asks for nothing beyond the download.

UpkeepUpdate frequency

WFワットチェッカー ships an update every 2 months, FlashDrop every 10 days. The most recent releases landed on October 26, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 5 level
WFワットチェッカー versus FlashDrop: the parameters behind the verdict, then further details
ParameterWFワットチェッカーFlashDrop
PriceFreeFree
Positive reviews11.1% of reviews—
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size25 MB50 MB
Age rating4+4+
DeveloperRATOC Systems, Inc.ButterFalcon

In-app purchases

None

WFワットチェッカー

No in-app purchases

2 purchases

FlashDrop

Subscriptions2
  • Monthly$1.991 Month
  • Annual$17.991 Year

Questions

Is WFワットチェッカー free?
WFワットチェッカー is free to download, with no in-app purchases.
Is FlashDrop free?
FlashDrop is free to download, with in-app purchases available.
Do WFワットチェッカー or FlashDrop have ads?
FlashDrop shows ads; WFワットチェッカー does not.
Which is updated more often, WFワットチェッカー or FlashDrop?
WFワットチェッカー ships an update every 2 months, and FlashDrop every 10 days. Most recently, WFワットチェッカー was updated on October 26, 2026 and FlashDrop on October 5, 2026.

Other comparisons