# ecofactory vs smiledang

The clearest difference is ads: smiledang at none against ecofactory's shown. ecofactory's advantage is update cadence (every 3 months vs every 22 months). On price, in-app purchases, device support 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.

ecofactory ships an update every 3 months, smiledang every 22 months. The most recent releases landed on September 11, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | ecofactory | smiledang |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 22 months |
| Size | 70 MB | 71 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Culture of Beauty co.ltd](https://appshunter.io/developer/1858172464) | [iSensBiz](https://appshunter.io/developer/1651148124) |

## What reviewers say

### ecofactory

[App page](https://appshunter.io/ios/app/ecofactory/id1497823708)

**In-app purchases:** none


### smiledang

[App page](https://appshunter.io/ios/app/smiledang/id6736640922)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ecofactory free?

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

### Is smiledang free?

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

### Do ecofactory or smiledang have ads?

ecofactory shows ads; smiledang does not.

### Which is updated more often, ecofactory or smiledang?

ecofactory ships an update every 3 months, and smiledang every 22 months. Most recently, ecofactory was updated on September 11, 2026 and smiledang on September 18, 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.*