Comparison

트리나 treena vs Just One

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

감정 분석 성장 일기

About

트리나 treena

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

Read full description

더불어 감정일기를 작성하며 자신의 감정을 표현하고 해소할 수 있습니다 :) 앱을 설치했을 때 심어지는 씨앗에 ‘나'를 대입하여 일기를 쓸수록 성장하는 모습을 자라나는 나무로 시각화하여 보여줍니다. 나무의 성장을 통해 성취감을 느껴 보세요! 트리나 treena (tree + 나)와 함께 성장해보아요 :)

About

Just One

Features

Read full description

Just One은 하루에 단 한 번, 당신에게 필요한 한마디를 전해주는 앱입니다. 오늘의 위로를 통해 마음에 닿는 한 구절을 받아보세요. 복잡한 고민 없이, 지금의 당신에게 필요한 메시지를 조용히 전달합니다. • 하루 한 번, 단 하나의 위로 • 다양한 고민 카테고리 • 저장 기능으로 마음에 남는 구절 보관 오늘, 당신에게 필요한 한마디를 받아보세요.

Screenshots

트리나 treena4 screens

Just One3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 6 level

트리나 treena versus Just One: the parameters behind the verdict, then further details
Parameter	트리나 treena	Just One
Price	Free	Free
Positive reviews	100.0% of reviews	—
Update frequency	Every 8 months	Every 4 days — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPod — better	iPhone
Requires iOS	14.0 — better	17.0
Further details — not scored
Size	25 MB	2 MB
Age rating	4+	4+
Developer	Songa Kim	Sung Hoon Chang

In-app purchases

None

트리나 treena

No in-app purchases

None

Just One

No in-app purchases

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.