# EM3720 vs Sentiment

The clearest difference is ads: EM3720 at none against Sentiment's shown. EM3720 also leads on iOS requirement (11.0 vs 15.8.3). Sentiment's advantage is update cadence (fortnightly vs every 4 months). On price, in-app purchases and device support there is nothing between them.

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

EM3720 ships an update every 4 months, Sentiment fortnightly. The most recent releases landed on September 18, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | EM3720 | Sentiment |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 6 MB | 37 MB |
| Requires iOS | **11.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.](https://appshunter.io/developer/1064839954) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### EM3720

[App page](https://appshunter.io/ios/app/em3720/id1376380656)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentiment

[App page](https://appshunter.io/ios/app/sentiment-analysis/id6673886641)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EM3720 free?

EM3720 is free to download, with no in-app purchases.

### Is Sentiment free?

Sentiment is free to download, with no in-app purchases.

### Do EM3720 or Sentiment have ads?

Sentiment shows ads; EM3720 does not.

### Which is updated more often, EM3720 or Sentiment?

EM3720 ships an update every 4 months, and Sentiment fortnightly. Most recently, EM3720 was updated on September 18, 2026 and Sentiment on September 7, 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.*