# iENV vs Smart iMeters

The clearest difference is update cadence: iENV at monthly against Smart iMeters's every 20 months. On price, ads, 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.

iENV ships an update monthly, Smart iMeters every 20 months. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | iENV | Smart iMeters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (7 ratings)](https://appshunter.io/ios/app/ienv/id1260827700/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 25.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 20 months |
| Monetization | Free | — |
| Size | 55 MB | 29 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNI-TREND TECHNOLOGY (CHINA) CO.,LTD.](https://appshunter.io/developer/1207185875) | [Changzhou Haoyi Technology Co.,Ltd.](https://appshunter.io/developer/6775329697) |

## What reviewers say

### iENV

[App page](https://appshunter.io/ios/app/ienv/id1260827700)

This utility app connects UNI-T environmental meters to your smartphone via Bluetooth. It displays and records real-time data for temperature, humidity, noise, wind speed, light intensity, and rotation speed from compatible UNI-T devices.

**Highlights:** Bluetooth connectivity to UNI-T meters, Real-time data display, Data recording capabilities, Supports multiple environmental parameters, Compatible with various UNI-T meter models

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart iMeters

[App page](https://appshunter.io/ios/app/smart-imeters/id6450159159)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iENV free?

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

### Is Smart iMeters free?

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

### Do iENV or Smart iMeters have ads?

Neither iENV nor Smart iMeters shows ads.

### Which is updated more often, iENV or Smart iMeters?

iENV ships an update monthly, and Smart iMeters every 20 months. Most recently, iENV was updated on October 16, 2026 and Smart iMeters on October 3, 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.*