# SIZEUP 사이즈업 vs I AM GREENER

The clearest difference is ads: SIZEUP 사이즈업 at none against I AM GREENER's shown. SIZEUP 사이즈업 also leads on update cadence (every 2 months vs every 8 months). I AM GREENER's advantage is iOS requirement (14.0 vs 16.0). 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.

SIZEUP 사이즈업 ships an update every 2 months, I AM GREENER every 8 months. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SIZEUP 사이즈업 | I AM GREENER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 8 months |
| Size | 75 MB | 71 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hyun Seok Kim](https://appshunter.io/developer/1657957306) | [REWIND Co., Ltd.](https://appshunter.io/developer/1685775416) |

## What reviewers say

### SIZEUP 사이즈업

[App page](https://appshunter.io/ios/app/sizeup/id6444922350)

**Features:** Vision Pro support

**In-app purchases:** none


### I AM GREENER

[App page](https://appshunter.io/ios/app/i-am-greener/id6743145583)

**In-app purchases:** none


## Frequently asked questions

### Is SIZEUP 사이즈업 free?

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

### Is I AM GREENER free?

I AM GREENER is free to download, with no in-app purchases.

### Do SIZEUP 사이즈업 or I AM GREENER have ads?

I AM GREENER shows ads; SIZEUP 사이즈업 does not.

### Which is updated more often, SIZEUP 사이즈업 or I AM GREENER?

SIZEUP 사이즈업 ships an update every 2 months, and I AM GREENER every 8 months. Most recently, SIZEUP 사이즈업 was updated on October 20, 2026 and I AM GREENER on October 28, 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.*