# 울산환경히어로 vs ONTREE 지구를 지키는 작은 습관 온트리

The clearest difference is review sentiment: 울산환경히어로 at 81% against ONTREE 지구를 지키는 작은 습관 온트리's 14%. ONTREE 지구를 지키는 작은 습관 온트리's advantage is iOS requirement (14.0 vs 16.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

울산환경히어로 ships an update every 10 days, ONTREE 지구를 지키는 작은 습관 온트리 every 3 weeks. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 울산환경히어로 | ONTREE 지구를 지키는 작은 습관 온트리 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **80.6% of reviews** | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 24 MB | 37 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ulsan Climate Environment Network](https://appshunter.io/developer/1586256223) | [Kyungran Kim](https://appshunter.io/developer/1443699006) |

## What reviewers say

### 울산환경히어로

[App page](https://appshunter.io/ios/app/id1586256221)

**Features:** macOS Compatibility

**In-app purchases:** none


### ONTREE 지구를 지키는 작은 습관 온트리

[App page](https://appshunter.io/ios/app/ontree/id1610045371)

Cultivate eco-friendly habits by completing environmental missions and tracking your progress. Earn points to plant real trees and see your positive impact on the planet. Join your family and friends in collective environmental action.

**Highlights:** Complete 12 environmental missions, Earn points for missions and check-ins, Plant real trees with earned points, Track carbon reduction, View rankings among friends and groups, Participate in offline and online events

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 울산환경히어로 free?

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

### Is ONTREE 지구를 지키는 작은 습관 온트리 free?

ONTREE 지구를 지키는 작은 습관 온트리 is free to download, with no in-app purchases.

### Do 울산환경히어로 or ONTREE 지구를 지키는 작은 습관 온트리 have ads?

Neither 울산환경히어로 nor ONTREE 지구를 지키는 작은 습관 온트리 shows ads.

### Which is updated more often, 울산환경히어로 or ONTREE 지구를 지키는 작은 습관 온트리?

울산환경히어로 ships an update every 10 days, and ONTREE 지구를 지키는 작은 습관 온트리 every 3 weeks. Most recently, 울산환경히어로 was updated on October 18, 2026 and ONTREE 지구를 지키는 작은 습관 온트리 on October 15, 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.*