# Eco vs Delta1

The clearest difference is device support: Eco at 2 against Delta1's —. On price, in-app purchases and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Eco | Delta1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (10 ratings)](https://appshunter.io/ios/app/eco-butler/id6503674864/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Monetization | Free | — |
| Size | 178 MB | 51 MB |
| Requires iOS | **11.0** | 12.1 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [YOUTO INFORMATION TECHNOLOGY COMPANY LIMITED](https://appshunter.io/developer/1749915187) | [DELTA THERMAL VISION LLC](https://appshunter.io/developer/1849595574) |

## What reviewers say

### Eco

[App page](https://appshunter.io/ios/app/eco-butler/id6503674864)

Monitor your indoor air quality in real-time and receive alerts for filter replacement. Remotely control your air purifier's settings and view historical data to understand your environment. Contact customer service for support.

**Highlights:** Real-time indoor air quality monitoring, Historical air quality data browsing, Filter lifespan monitoring and replacement reminders, Remote control of device settings, Customizable schedules for device operation

**Features:** macOS Compatibility

**In-app purchases:** none


### Delta1

[App page](https://appshunter.io/ios/app/delta1/id6754678574)

**In-app purchases:** none


## Frequently asked questions

### Is Eco free?

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

### Is Delta1 free?

Delta1 is free to download, with no in-app purchases.

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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.*