Comparison

3LINEDIARY vs Terru Couple Diary & Challenge

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

Terru Couple Diary & Challenge

Features
Read full description

A shared couple diary, fun challenges, anniversaries, and a chat just for two. Terru helps you and your partner share everyday moments and make memories together. From your latest date to an ordinary day apart, keep the little stories that make your relationship yours. A COUPLE DIARY TO SHARE Write about your day, your favorite dates, and the moments you want to remember. Read each other's entries and get a little closer through the stories you share. CHALLENGES TO ENJOY TOGETHER Set shared goals and take on couple challenges and missions. Add playful bets to bring a little more fun to everyday life as a couple. A CHAT JUST FOR THE TWO OF YOU Send a quick hello or catch up at the end of the day. Whether you see each other often or are in a long-distance relationship, keep your conversations going in your own space. ANNIVERSARIES AND DATE PLANS Keep your special dates and plans together in one place. Check the weather for your next date and look forward to spending time together. THIS-OR-THAT GAMES Discover each other's preferences with fun choices. Celebrate the answers you share and turn your different picks into new conversations. ADORABLE ANIMAL CHARACTERS Collect and customize characters you love. Bring a little extra cuteness to your shared diary and couple challenges. Newly together or years into your story, there are always more memories to make. Start your next chapter together with Terru.

Screenshots

3LINEDIARY4 screens
Terru Couple Diary & Challenge4 screens

Verdict

The call

The clearest difference is in-app purchases: Terru Couple Diary & Challenge at none against 3LINEDIARY's 1. Terru Couple Diary & Challenge also leads on ads (none vs shown) and update cadence (every 5 days vs fortnightly). On price, device support and iOS requirement 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. Terru Couple Diary & Challenge asks for nothing beyond the download.

UpkeepUpdate frequency

3LINEDIARY ships an update fortnightly, Terru Couple Diary & Challenge every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
3LINEDIARY versus Terru Couple Diary & Challenge: the parameters behind the verdict, then further details
Parameter3LINEDIARYTerru Couple Diary & Challenge
PriceFreeFree
Rating4.5 (47 ratings) — better—
Positive reviews84.5% of reviews—
Number of ratings47 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size88 MB54 MB
Age rating12+12+
Developer(주)윌림Yoonjik Cho

In-app purchases

1 purchases

3LINEDIARY

Subscriptions1
  • ‘Friends' Subscription$2.991 Month
None

Terru Couple Diary & Challenge

No in-app purchases

Questions

Is 3LINEDIARY free?
3LINEDIARY is free to download, with in-app purchases available.
Is Terru Couple Diary & Challenge free?
Terru Couple Diary & Challenge is free to download, with no in-app purchases.
Do 3LINEDIARY or Terru Couple Diary & Challenge have ads?
3LINEDIARY shows ads; Terru Couple Diary & Challenge does not.
Which is updated more often, 3LINEDIARY or Terru Couple Diary & Challenge?
3LINEDIARY ships an update fortnightly, and Terru Couple Diary & Challenge every 5 days. Most recently, 3LINEDIARY was updated on October 24, 2026 and Terru Couple Diary & Challenge on October 25, 2026.

Other comparisons