# 트리나 treena vs Just One

The clearest difference is update cadence: Just One at every 4 days against 트리나 treena's every 8 months. 트리나 treena's advantage is iOS requirement (14.0 vs 17.0). 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.

트리나 treena ships an update every 8 months, Just One every 4 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 트리나 treena | Just One |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 25 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Songa Kim](https://appshunter.io/developer/1613519755) | [Sung Hoon Chang](https://appshunter.io/developer/1896320768) |

## What reviewers say

### 트리나 treena

[App page](https://appshunter.io/ios/app/treena/id1613522990)

This app helps you express and resolve your emotions by writing a diary. Watch your inner self grow into a tree as you write, visualizing your progress and finding a sense of accomplishment.

**Highlights:** Emotional journaling, Self-expression, Emotion resolution, Visualized growth, Sense of accomplishment

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Just One

[App page](https://appshunter.io/ios/app/just-one/id6766744234)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 트리나 treena free?

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

### Is Just One free?

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

### Do 트리나 treena or Just One have ads?

Neither 트리나 treena nor Just One shows ads.

### Which is updated more often, 트리나 treena or Just One?

트리나 treena ships an update every 8 months, and Just One every 4 days. Most recently, 트리나 treena was updated on November 8, 2026 and Just One on October 31, 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.*