Bokgi Lucky Diary vs Surf PDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Life Balance Self-Assessment
- Habit Challenges
- Monthly Calendar View
- Color-coded Activity Blocks
- Notes and Photos
- Detailed Statistics
- Customizable Icons and Themes
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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
Surf PDF
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Surf PDF is a PDF editor for iPhone, iPad and Mac. • Import PDFs, images, photos and camera scans • Merge, extract, reorder, rotate and crop pages • Browse adjustable thumbnails and select multiple pages • Recognize text on your device in multiple languages • Compare image and original/OCR text layers side by side and correct recognized text • Search documents and highlight matching words • Save and reopen projects • Choose export text layers, resolution, passwords and other settings Editing, OCR and previews are free. Export up to 20 pages free three times per day (reset at midnight Korea time). Otherwise, each export costs 1 credit per 20 pages of the total, rounded up. Credit exports do not use the daily free allowance. Credits are charged only after successful file saving. On iPhone and iPad, non-subscribers may see ads at app launch, after OCR, and after successful export. Complete an optional rewarded ad to earn 1 credit. Mac does not display ads or offer rewarded credits. Buy 10, 22 or 36 credits, or choose the auto-renewing monthly Unlimited subscription. Unlimited removes all ads and export credit charges. Local prices appear before purchase. Manage or cancel subscriptions in your Apple account. Sign in with Apple to use the server credit ledger, purchases and free-allowance or credit-funded exports. The same account restores server records across supported devices. An active existing subscription verified by the App Store retains ad-free unlimited export even when the wallet is signed out or unavailable. Existing device/iCloud credits require review before migration. OCR stays on device; documents are not uploaded to the wallet server. Check recognition against the original. Text-layer editing changes searchable text, not image pixels. Privacy: https://www.new-splash.com/server-wallet/privacy.html Terms: https://www.new-splash.com/server-wallet/terms.html Support: surfpdf.official@gmail.com
Screenshots
Verdict
The clearest difference is iOS requirement: Bokgi Lucky Diary at 14.1 against Surf PDF's 17.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Bokgi Lucky Diary sells 10 in-app purchases, starting at $1.99 per month and Surf PDF sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Bokgi Lucky Diary ships an update weekly, Surf PDF every 4 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | Bokgi Lucky Diary | Surf PDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (30 ratings) — better | — |
| Positive reviews | 96.4% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Weekly | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 167 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Sung Hee Bae | SEONGOH JEONG |
In-app purchases
Bokgi Lucky Diary
- Plus 1 Month$1.991 Month
- Plus 3 Months$4.993 Months
- Plus 6 months$7.996 Months
Show 1 moreShow fewer
- Plus 1 Year$9.991 Year
- Rich bearFree
- Fluffy PuppyFree
- Basic Heart$0.99
Show 3 moreShow fewer
- Quick-witted Bunny$0.99
- Christmas$0.99
- Plus Lifetime$39.99
Surf PDF
- Monthly Unlimited$1.991 Month
- 10 credits$1.00
- 36 credits$1.99
- 22 credits$2.00









