Comparison

3LINEDIARY vs 형사동경

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

Head to head
About

3LINEDIARY

This app offers a simple journaling experience focused on positivity and mindfulness. Capture daily thoughts with brief entries and optional photos, create multiple private or public diaries, and connect with a supportive community through shared writing and engagement.

Highlights
  • Three-line daily entries
  • Optional photo attachments
  • Multiple private diaries
  • Public diary sharing (anonymous option)
  • Community engagement (likes, comments)
  • Shared diaries with friends/family
  • Customizable reminders
Features
Read full description

A comforting and mindful space. Increase positivity and motivation in your day-to-day life through a simple journaling habit. 3linediary is a leading diary, journal app that enables you to capture your day with three lines of text and one picture. You can create multiple diaries to reflect various aspects of your life. You can make your diary private for your eyes only, or public to share your story anonymously. Read, connect, and engage with people’s touching stories and their various lives reflected in their public diaries. Journal with the people you love - your partner, friends, and family. Join a community organized around shared interests and write collectively — sharing various topics from what’s on your mind to relationship advices, hobbies, KPOP stans, book recommendations, etc. At 3linediary, we believe that writing and sharing your stories is an empowering act of self-love. To take a moment of your day to write something that captures your day may seem like a simple act - but it’s an act of leaving a record of you and cherishing the present-you for the future. Start writing today! ■ This app is recommended for people who … - want to keep a simple record of daily thoughts and feelings - want to feel more gratitude in life - want to relieve stress and anxiety - want to track various goals and habits - want a record of personal milestones - want to write a journal with friends - want to write a diary with their significant other - want to practice creative writing - want to find a community to write with 
 ■ Features: - Pin lock to keep your private diaries protected - Save each diary entry as an image - Set custom reminder notifications on specific days and times. - Write an entry for a past date. - Write more than 3 lines if you feel like writing more. ■ Community - You can make your diary public and still remain anonymous. - Engage and connect with others through comments, likes, and bookmarks. - Read about various lives through people’s public diaries. - Join a community and write together about a shared interest. ■ Shared Diaries - You can write diaries with your friends, family or partner. - Record special memories together. Write to your long-distance friend or partner. ■ 3linediary FRIENDS Subscription (USD $2.99/month) - Download your diaries as a PDF - Choose from thousands of images to go with your diary entry. - Decorate your diary with various stickers. - Capture how you feel with a range of different fonts. - Once you confirm the purchase, the payment will go through your iTunes account. - The price of the subscription includes taxes. - You can turn off auto-renewal at least 24 hours before your subscription period ends. - After your purchase, you can manage your subscriptions in your iTunes account settings and turn off auto-renewal. *Terms and Conditions for Paid Services: https://mywillim.wixsite.com/home/enutilization-paid *Privacy Policy: https://mywillim.wixsite.com/home/enpersonaldata willim Inc. is a startup that aspires to help build a world filled with sincerity. Capture your life in 3 lines. Share your stories with 3linediary. - Business name: willim Inc. - CEO: Bae Joonho - Company Registration Number: 341-81-00628

About

형사동경

Features
Read full description

신임 경찰의 기초를 다지고, 선·후배들과 정보교류 할 수 있는 공간! 수사,형사(노하우),지역경찰(경험&꿀팁), Pol 아고라(질문&답변), Pol 채팅, Pol 게임, Pol 웹툰, 판례검색, CCTV 오차계산, 공소시효 만료계산, 디지털증거(이지해쉬), 지역경찰수첩, 형사수첩 등 집단지성의 결정체!

Screenshots

3LINEDIARY4 screens
형사동경4 screens

Verdict

The call

The clearest difference is in-app purchases: 형사동경 at none against 3LINEDIARY's 1. 형사동경 also leads on ads (none vs shown) and review sentiment (100% vs 85%). 3LINEDIARY's advantage is update cadence (fortnightly vs every 2 months). On price 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. 3LINEDIARY sells 1 in-app purchase, starting at $2.99 per month. 형사동경 asks for nothing beyond the download.

UpkeepUpdate frequency

3LINEDIARY ships an update fortnightly, 형사동경 every 2 months. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
3LINEDIARY versus 형사동경: the parameters behind the verdict, then further details
Parameter3LINEDIARY형사동경
PriceFreeFree
Rating4.4 (48 ratings) — better—
Positive reviews84.5% of reviews100.0% of reviews — better
Number of ratings48 — better—
Update frequencyFortnightly — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.613.4 — better
Further details — not scored
Size88 MB17 MB
Age rating12+4+
Developer(주)윌림Swing2App Co. Ltd.

Customer experience

3LINEDIARY

All ratings48 ratings
Positive85.4%
Neutral6.3%
Negative8.3%
Written reviews84 reviews
Positive84.5%
Neutral6.0%
Negative9.5%

형사동경

Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

3LINEDIARY

Subscriptions1
  • ‘Friends' Subscription$2.991 Month
None

형사동경

No in-app purchases

Questions

Is 3LINEDIARY free?
3LINEDIARY is free to download, with in-app purchases available.
Is 형사동경 free?
형사동경 is free to download, with no in-app purchases.
Do 3LINEDIARY or 형사동경 have ads?
3LINEDIARY shows ads; 형사동경 does not.
Which is updated more often, 3LINEDIARY or 형사동경?
3LINEDIARY ships an update fortnightly, and 형사동경 every 2 months. Most recently, 3LINEDIARY was updated on October 17, 2026 and 형사동경 on October 8, 2026.

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