# BTワットチェッカー vs EZ Sign(TM) NFC

The clearest difference is review sentiment: EZ Sign(TM) NFC at 67% against BTワットチェッカー's 36%. EZ Sign(TM) NFC also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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 October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BTワットチェッカー | EZ Sign(TM) NFC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (7 ratings)](https://appshunter.io/ios/app/ez-signtm-nfc/id6751824926/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 35.7% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 3 MB | 124 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RATOC Systems, Inc.](https://appshunter.io/developer/568725272) | [Santek](https://appshunter.io/developer/1837065475) |

## What reviewers say

### BTワットチェッカー

[App page](https://appshunter.io/ios/app/bt/id1490362165)

Monitor and control power consumption with real-time data visualization. Convert energy usage into electricity costs and CO2 emissions, with historical data presented in graphs. Save measurement data to CSV files and remotely manage power ON/OFF.

**Highlights:** Real-time power, current, and voltage display, Convert energy usage to cost and CO2 emissions, Historical data in bar graphs (hourly, daily, monthly, yearly), Save measurement data to CSV, Remote power ON/OFF control

**Features:** macOS Compatibility

**In-app purchases:** none


### EZ Sign(TM) NFC

[App page](https://appshunter.io/ios/app/ez-signtm-nfc/id6751824926)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 October 25, 2026 and EZ Sign(TM) NFC on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*