GhostDiary vs KnowMe (Simple Diary App)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GhostDiary
Easily record your daily life and emotions with cute ghost characters. Track your mood, organize entries by emotion or theme, and gain insights into what affects your feelings. Features include password protection and daily fortune cookies for mindfulness.
- Mood tracking with ghost characters
- Daily diary entries with icons and photos
- Emotional statistics and analysis
- Categorized memos and diaries
- Daily fortune cookies for mindfulness
- Password protection for privacy
- Customizable design themes
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Record your precious day with a ghostdiary! You can record your daily life easily and quickly with cute ghost characters. "Emotional Records" Record your mood as a ghost butler character, and check out the calendar at a glance. It is also possible to classify the diary by each emotion. "Daily Diary" Record who you spent the day with and what you did with various icons. Write it simply with icons on a daily basis, and on a special day, with pictures and long articles. "Mood Tracker" Check the statistics on emotions and activities recorded. Identify the factors that affect my emotions. "Memo" Have you ever wanted to separate themes such as travel diary and cooking diary ? Create a folder and record it one by one by one. Or if you have to remember something, but it's ambiguous to write in your diary, write it separately in the memo column. "Fortune cookies." Start your day with ghost cookies. There'll be a note in it that'll help. When you have negative thoughts such as depression, insomnia, or irritation, stress pull out a fortune cookie and control your mind. "Design Theme" Ghost Butler offers a variety of themed calendars. We are currently offering basic themes and summer themes. "Diary with Password" You can set a password to keep the record safe. "Other Features" It also provides functions such as notification function, font setting, and calendar image sharing. "Contact Us" Please let me know in the review! Thank you :) "Terms of Use" https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
KnowMe (Simple Diary App)
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KnowMe: The warmest time to get to know yourself. Tangled worries lingering in your head, or earnest hopes for the future. If left only as thoughts, they quickly scatter and fade. Now, leave your thoughts as words in KnowMe. Passing thoughts will turn into radiant Mind Marbles, helping you face your true self. Created Mind Marbles can be stored or emptied into 3 special spaces depending on your state of mind: Emptying (Emotion Incinerator) "Burn negative emotions without a trace." Throw painful, jealous, depressing, or stressful emotions that suffocate you into the incinerator. (Not Saved) Marbles thrown here are completely incinerated and not saved in the app. Safely shake off the emotional garbage piled up in your heart and feel the true lightness of letting go. Filling (Future Mailbox) "The most reassuring parcel sent to your future self." Put your desired future, resolutions, and goals into a marble and drop it in the mailbox. (Saved) These marbles become letters and packages sent to your future self. Visualize the positive version of yourself that will arrive one day, and fill up on the driving force to live day by day. Gratitude & Pride (Tree of Growth) "Life's cheat code: Using positivity and gratitude as fertilizer." Hang your secret brags you couldn't tell others and the small moments of gratitude you found in daily life on the tree. (Saved) These marbles become special fertilizer that grows the Tree of Growth strong. Take them out anytime to fill up your self-esteem and see how wonderful you are and how full of thankful things your life is. Recommended for: Those who need a secret space (emotional trash can) to safely vent complex thoughts and stress. Those who want to visualize goals and resolutions for the future and gain motivation. Those who want to build a positive mindset and self-esteem through a gratitude journal. Those who want to look into their true heart and reflect through writing. A time to hold onto scattered thoughts and grow. Create your own marbles in KnowMe right now.
Screenshots
Verdict
The clearest difference is in-app purchases: KnowMe (Simple Diary App) at none against GhostDiary's 10. KnowMe (Simple Diary App) also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads 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
Both are free to download. GhostDiary sells 10 in-app purchases, starting at $29.99 per year. KnowMe (Simple Diary App) asks for nothing beyond the download.
GhostDiary ships an update every 3 weeks, KnowMe (Simple Diary App) every 4 weeks. The most recent releases landed on November 7, 2026 and October 25, 2026 respectively.
| Parameter | GhostDiary | KnowMe (Simple Diary App) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (181 ratings) — better | — |
| Positive reviews | 87.2% of reviews | — |
| Number of ratings | 181 — better | — |
| Update frequency | Every 3 weeks — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 92 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Yoonjik Cho | Hojun Choi |
In-app purchases
GhostDiary
- free-ads-year$29.991 Year
- sky background$1.29
- Ghostdog$1.49
- GhostBear$1.49
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- Ghost Astronaut$1.49
- Notebook ghost$1.49
- FlowerGhost$1.49
- Graduated ghost$1.49
- Big Eyed Ghost$1.49
- Skinny Ghost$1.49
KnowMe (Simple Diary App)
No in-app purchases
Questions
Is GhostDiary free?
Is KnowMe (Simple Diary App) free?
Do GhostDiary or KnowMe (Simple Diary App) have ads?
Which is updated more often, GhostDiary or KnowMe (Simple Diary App)?
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