Comparison

BTワットチェッカー vs EZ Sign(TM) NFC

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

Head to head
About

BTワットチェッカー

Features
Read full description

【1】 アプリケーション概要 ラトックシステムのワットチェッカーRS-BTWATTCH2で計測された消費電力など各種データの表示と電源ON・OFF操作をするアプリケーションです。 【2】 特徴 ● 消費電力・電流・電圧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・1日・1ヶ月・1年単位で棒グラフ表示 ● 計測データをCSVファイル保存 ● 電源ON/OFF操作

About

EZ Sign(TM) NFC

Easily create and update custom displays for your electronic paper device using your smartphone. Design with text, images, or freehand drawings, then transfer wirelessly via NFC. Content remains visible without power.

Highlights
  • NFC updates with history
  • Text, image, and freehand design tools
  • Template creation and saving
  • Preview designs before upload
  • Optimized for 2-color and 4-color models
  • Brightness and contrast adjustment
Features
Read full description

About the App EZ Sign NFC is the official app for updating the display of the electronic paper device “EZ Sign NFC Model” using your smartphone. Create your own images or text and upload them simply by holding your phone close to the device. Once displayed, your content stays visible without any power source. How to Use (Step by Step) Step 1: Open the App Select your EZ Sign model. You can change the interface language from the “Global” icon (English / 日本語 / 中文). Step 2: Choose a Template Select from Standard, Default, or Custom templates. Custom templates let you freely adjust the layout and save designs for future use. Step 3: Create Your Design Text: Add text or emojis, choose colors, layout, and backgrounds (supports 2-color / 4-color depending on the model). Image: Import from your photo library, crop, apply filters, or take a photo with the in-app camera. Freehand: Draw freely with your finger and adjust line thickness. Step 4: Preview Tap the “Eye” icon to preview your design in Pure Color or Dithering mode. Save completed designs from the “Library “ icon. Step 5: Upload Hold your smartphone close to the EZ Sign device until the upload completes. The displayed content will remain visible without power. Estimated Update Time 2-Color Model: approx. 3 seconds 4-Color Model: approx. 30 seconds Key Features One-tap NFC update (with history and resend options) Integrated editing tools for text, images, and freehand drawings Optimized for both 2-color and 4-color models Brightness & contrast adjustment Template saving, reuse, and preview functions Permissions & Privacy NFC: Used to write data to the EZ Sign device. Photo Library: Used to import and save images. This app does not collect any personal information. All image processing is done locally on your device.

Screenshots

BTワットチェッカー4 screens
EZ Sign(TM) NFC4 screens

Verdict

The call

The clearest difference is update cadence: EZ Sign(TM) NFC at every 2 weeks against BTワットチェッカー's every 3 months. EZ Sign(TM) NFC also leads on iOS requirement (13.0 vs 15.6). 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

BTワットチェッカー ships an update every 3 months, EZ Sign(TM) NFC every 2 weeks. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 8 level
BTワットチェッカー versus EZ Sign(TM) NFC: the parameters behind the verdict, then further details
ParameterBTワットチェッカーEZ Sign(TM) NFC
PriceFreeFree
Rating—3.9 (7 ratings) — better
Positive reviews—66.7% of reviews
Number of ratings—7 — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size3 MB124 MB
Age rating4+4+
DeveloperRATOC Systems, Inc.Santek

In-app purchases

None

BTワットチェッカー

No in-app purchases

None

EZ Sign(TM) NFC

No in-app purchases

Questions

Is BTワットチェッカー free?
BTワットチェッカー is free to download, with no in-app purchases.
Is EZ Sign(TM) NFC free?
EZ Sign(TM) NFC is free to download, with no in-app purchases.
Do BTワットチェッカー or EZ Sign(TM) NFC have ads?
Neither BTワットチェッカー nor EZ Sign(TM) NFC shows ads.
Which is updated more often, BTワットチェッカー or EZ Sign(TM) NFC?
BTワットチェッカー ships an update every 3 months, and EZ Sign(TM) NFC every 2 weeks. Most recently, BTワットチェッカー was updated on September 9, 2026 and EZ Sign(TM) NFC on September 10, 2026.

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