Comparison

kobak vs Bokgi Lucky Diary

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

Head to head
About

kobak

Develop good habits and track your progress with a fun sticker collection system. Earn rewards for consistency and celebrate your achievements as you become a better version of yourself.

Highlights
  • Sticker collection for habit tracking
  • Progress visualization
  • Reward system for consistency
  • Habit development support
  • Personalized goal setting
Features
Read full description

Having fun with collecting stickers, it's already been 50 days since you started at-home workout! Wow, have you always had those six packs? When you're not sure if you took a vitamin that day, don't worry. Your records are in your hand. Do you want to develop good habits? Promise yourself a little reward and keep putting stickers. Compliment yourself like a child and feel successful. And enjoy becoming a better person. We are rooting for you!

About

Bokgi Lucky Diary

This app helps you improve habits and track behavior patterns through journaling and self-assessment tools. It offers visual representations of life areas, challenges, and detailed statistics to foster personal growth and record daily life with notes and photos.

Highlights
  • Life Balance Self-Assessment
  • Habit Challenges
  • Monthly Calendar View
  • Color-coded Activity Blocks
  • Notes and Photos
  • Detailed Statistics
  • Customizable Icons and Themes
Features
Read full description

Experience the pleasure of improving your habits when you keep a journal! Lucky Diary is probably the most impressive app that you can do both to keep memories with someone you love in your daily life and to track your behavior patterns. Also, Lucky Diary with oriental cuteness is probably one of the easiest journal apps to use. Now, we invite you to the world of Lucky Diary with uniqueness. # Recommended for people who: ∙ Those who want to record their daily life easily ∙ Those who have trouble keeping a diary with long sentences ∙ Those who want to check behavioral patterns with data ∙ Those who want to analyze the quality of behavior ∙ Those who need challenges to improve their lives ∙ Those who want to find areas to improve in their life through life balance self-assessment ​​Lucky Diary provides the following features: # Life Balance Self-Assessment: The Rudder of Life Checklist By looking at a visual representation of all the areas of your life at once, the Rudder of Life Checklist helps you to better understand which of your life areas are flourishing and which ones need the most work. # Challenges Start the challenges of improving important but low-energy areas by considering the results of the rudder of Life checklist. # Monthly Calendar Through the monthly calendar, you can intuitively see the level of satisfaction, changes in mood, and frequency of habits. # 4 color blocks Personalize all your activities in 4 colored blocks. For example, from meeting friends to habits you want to improve. Then tap on today's activity to complete the diary. For details on how to use blocks by color, refer to the following: ∙ Lucky Diary Settings > FAQ # notes and photos On special days, feel the joy of using Lucky Diary with photos and memo. # Statistics to help you grow: The strength of the diary app is knowing about yourself with objective data. Experience growth with Lucky Diary's statistics! ∙ Record Day: Motivate to keep a diary ∙ Activity Ranking: Shows frequently recorded activities and their count ∙ Activity Traffic Light: Analyze the quality of activities (e.g. green: 60% Yellow 20% Red 20%) ∙ Each signal & Activities: Shows the frequency and ranking of activities for each signal ∙ Satisfaction & Activities: Shows activities related to each satisfaction ∙ Satisfaction & Mood: Shows the correlation between Satisfaction level and mood ∙ Average Satisfaction: Shows the level of Satisfaction for each day of the week ∙ Sleep Analysis: Shows the quality and quantity of sleep ∙ Challenge Stats ( Weekly / Monthly / Overachievement) # More than 400 icons Provides icons to support journals, such as self-development, hobbies, exercise, and food. # Other features that will enhance the user experience ∙ Edit blocks, activities as you like ∙ Select and view only the icons you want on the monthly calendar screen ∙ Customize fonts and themes ∙ Turn on PIN lock and keep your diary safe ∙ Set reminders to record your daily life ∙ Dark Mode ∙ Home Widget ∙ Data Backup & Restore

Screenshots

kobak4 screens
Bokgi Lucky Diary4 screens

Verdict

The call

The clearest difference is ads: kobak at none against Bokgi Lucky Diary's shown. Bokgi Lucky Diary's advantage is update cadence (weekly vs every 5 months). On price, review sentiment, in-app purchases and monetization model 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. kobak sells 8 one-off in-app purchases and Bokgi Lucky Diary sells 15 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

kobak ships an update every 5 months, Bokgi Lucky Diary weekly. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
kobak versus Bokgi Lucky Diary: the parameters behind the verdict, then further details
ParameterkobakBokgi Lucky Diary
PriceFreeFree
Rating—4.6 (30 ratings) — better
Positive reviews90.5% of reviews96.4% of reviews — better
Number of ratings—30 — better
Update frequencyEvery 5 monthsWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.1 — better
Further details — not scored
Size9 MB167 MB
Age rating4+4+
DeveloperMijin SongSung Hee Bae

Customer experience

kobak

Written reviews21 reviews
Positive90.5%
Neutral4.8%
Negative4.8%

Bokgi Lucky Diary

All ratings29 ratings
Positive86.2%
Neutral13.8%
Negative0.0%
Written reviews28 reviews
Positive96.4%
Neutral3.6%
Negative0.0%

In-app purchases

8 purchases

kobak

One-time8
  • 3 pencils2 variants$0.99
  • 2 pencils$0.99
  • 7 pencils2 variants$1.99
Show 5 more
  • 11 pencils$2.99
  • 17 pencils$4.99
  • 19 pencils$4.99
  • 32 pencils$7.99
  • 45 pencils$9.99
15 purchases

Bokgi Lucky Diary

Subscriptions4
  • Plus 1 Month$1.991 Month
  • Plus 3 Months$4.993 Months
  • Plus 6 months$7.996 Months
Show 1 more
  • Plus 1 Year$9.991 Year
One-time11
  • Rich bearFree
  • Fluffy PuppyFree
  • Relaxed CatFree
Show 8 more
  • Good ShibaFree
  • Yellow Cat$0.99
  • Basic Heart$0.99
  • Quick-witted Bunny$0.99
  • Christmas$0.99
  • hiphop chick$0.99
  • money dragon$0.99
  • Plus Lifetime$39.99

Questions

Is kobak free?
kobak is free to download, with in-app purchases available.
Is Bokgi Lucky Diary free?
Bokgi Lucky Diary is free to download, with in-app purchases available.
Do kobak or Bokgi Lucky Diary have ads?
Bokgi Lucky Diary shows ads; kobak does not.
Which is updated more often, kobak or Bokgi Lucky Diary?
kobak ships an update every 5 months, and Bokgi Lucky Diary weekly. Most recently, kobak was updated on October 11, 2026 and Bokgi Lucky Diary on October 24, 2026.

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