Comparison

My Diary With Lock vs 404Log

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

Head to head
About

My Diary With Lock

This app provides a secure and private space to record daily thoughts, moods, and memories. It offers password protection, mood tracking with emotion icons, and a calendar view to revisit past entries. Customize your journal with various artistic styles.

Highlights
  • Password and Face ID protection
  • Mood tracking with emotion icons
  • Quick notes with photos and emojis
  • Calendar view for browsing entries
  • Customizable fonts, backgrounds, and covers
Features
Read full description

The cute diary app specially designed for you, with mood tracking and password protection features. Whether it’s daily moods, memorable moments, or deep reflections, everything is safely stored here. Private & Secure Your diary is protected with a password lock and Face ID. Everything you write stays private and visible only to you. Mood Diary Record your moods using adorable emotion icons inspired by Plutchik’s Wheel of Emotions, allowing you to record moods in a soothing and easy way. Quick Notes Capture your feelings anytime with photos, text, and emojis. Calendar View Browse your diary by day or month and easily revisit memories from any specific date. Personalized Journal Customize artistic fonts, font size, background letter styles, and diary covers to create your own exclusive journal. If you have suggestions or feedback, please contact us in the app!

About

404Log

This app helps you track your emotions and analyze your romantic feelings over time. Log special moments, identify attraction signals, and review past crushes to understand your love life patterns. It's a personal space to reflect on your emotional journey.

Highlights
  • Love Frequency & Attraction Signals
  • Special Moments Calendar
  • Emotion Chart & Crush Trends
  • Ranking & Past Crush History
  • Reconnection Frequency
  • Relationship Mode Tracking
Features
Read full description

Ever wondered how your feelings change over time? That little moment when your crush looked at you, replied a little faster, or just walked past you… It might not seem like much, but when you're into someone, every second matters. This isn't just a journal. It's a space to track your emotions, analyze your love frequency, and see where your heart is headed. - Love Frequency & Attraction Signals What's your love frequency today? Are you stuck in an unrequited love zone, or is your energy pulling them closer? Find out if you're broadcasting the right signals for love, attraction, or even a text back. - Special Moments Calendar Love has its own milestones, even if it's one-sided. Save the first time they noticed you, the day you had the longest conversation, or when they liked your post. Every small detail makes up your love story. - Emotion Chart & Crush Trends Your emotions aren't random—track them like a pro. See how your feelings rise and fall over time, and spot patterns in your love life. Are you moving on, or just going in circles? - Ranking & Past Crush History Who’s been your longest-lasting crush? Your past loves tell a story. Analyze your dating patterns and see how your feelings evolved over time. You might be surprised by what you discover. - Reconnection Frequency & Relationship Mode Is it really over, or could there still be a spark? Check your reconnection frequency and see if there’s a chance to rekindle something. Even if you’re already in a relationship, you can use this to track your emotions and strengthen your bond. Love is unpredictable, but your feelings don’t have to be. Start tracking, reflecting, and maybe… tuning into the right frequency for love.

Screenshots

My Diary With Lock4 screens
404Log4 screens

Verdict

The call

The clearest difference is in-app purchases: 404Log at none against My Diary With Lock's 3. 404Log also leads on update cadence (every 8 days vs every 3 months) and review sentiment (100% vs 91%). My Diary With Lock's advantage is ratings volume (2K vs 19). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. My Diary With Lock sells 3 in-app purchases, starting at $1.99 per month. 404Log asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

404Log holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: My Diary With Lock has 2K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 91% of My Diary With Lock's written reviews are positive against 100% of 404Log's.

UpkeepUpdate frequency

My Diary With Lock ships an update every 3 months, 404Log every 8 days. Both last shipped on October 30, 2026.

Scorecard5 real differences · 5 level
My Diary With Lock versus 404Log: the parameters behind the verdict, then further details
ParameterMy Diary With Lock404Log
PriceFreeFree
Rating4.7 (2K ratings)4.9 (19 ratings) — better
Positive reviews91.1% of reviews100.0% of reviews — better
Number of ratings2K — better19
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size33 MB70 MB
Age rating4+4+
DeveloperMEETFIRE LIMITEDYoonjik Cho

Customer experience

My Diary With Lock

All ratings1,826 ratings
Positive93.0%
Neutral3.9%
Negative3.1%
Written reviews169 reviews
Positive91.1%
Neutral5.9%
Negative3.0%

404Log

All ratings19 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

My Diary With Lock

Reported bugs

2 issues
  • Submitted diary entries sometimes reset font settings
  • Occasional data loss when switching devices

Requested features

4 requests
  • Add more journal cover options
  • Implement backup and restore functionality
  • Improve font customization options
  • Introduce a dark mode theme

404Log

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

My Diary With Lock

Subscriptions2
  • Monthly VIP$1.991 Month
  • Yearly VIP$7.991 Year
One-time1
  • Lifetime VIP$9.99
None

404Log

No in-app purchases

Questions

Is My Diary With Lock free?
My Diary With Lock is free to download, with in-app purchases available.
Is 404Log free?
404Log is free to download, with no in-app purchases.
Which has better reviews, My Diary With Lock or 404Log?
404Log is rated higher. My Diary With Lock averages 4.7 out of 5 from 2K ratings, while 404Log averages 4.9 from 19 ratings.
Do My Diary With Lock or 404Log have ads?
Neither My Diary With Lock nor 404Log shows ads.
Which is updated more often, My Diary With Lock or 404Log?
My Diary With Lock ships an update every 3 months, and 404Log every 8 days. Most recently, My Diary With Lock was updated on October 30, 2026 and 404Log on October 30, 2026.

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