Diary! SmartDiary vs LazyDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diary! SmartDiary
Record daily life with photos and track your mood and schedule on a calendar. Secure your entries with a passcode and easily access past memories. Customize your diary with various settings for a personalized experience.
- Record memories with photos
- Track daily mood and schedule
- Passcode lock with biometric support
- iCloud backup and data migration
- Customizable calendar and diary settings
- Input forgetting notifications
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Simple and easy operation private diary application. ・Leave memories of daily life with photos easily. ・You can enter in the calendar the mood and schedule of the day. ・You can easily display past memories. ・Passcode lock (Touch ID, Face ID support) ・iCloud backup (iPhone, data migration between the iPad is also possible) [Other functions] ・Cover photo setting ・Calendar display setting (Start Week On, Calendar Position, Cover Photo Size, Transparency) ・Diary text setting (Font Size, Font Depth, Line Spacing) ・Theme color setting ・Notification of forgetting input ・Support for landscape orientation (iPad only) [Credit] ・Designed by Freepik and distributed by Flaticon (https://www.flaticon.com) ・Icons8 (https://icons8.com) ・This software includes the work that is distributed in the Apache License 2.0.
LazyDiary
This app simplifies daily journaling by allowing users to record thoughts like notes, line by line. It integrates with your calendar to suggest topics and sends daily reminders to help build a consistent habit. A clean, secure interface with password and biometric unlock ensures privacy.
- Note-style recording
- Calendar integration for prompts
- Daily notification reminders
- Simple, intuitive design
- Password and biometric security
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LazyDiary is a diary app that specializes in "keeping going". LazyDiary was developed based on the developer's own problem of not being able to keep up with any diary. - Record as if you were taking notes. If you try to write perfectly, you will not know where to start. LazyDiary allows you to keep a diary in a simple and easy manner by recording what happened in fragments, line by line, just like a note. Even on days when you are tired, you can keep a diary as if it were a note, making it easy to continue to keep a diary every day. Of course, you can also record detailed information. - Never be at a loss for things to write about. LazyDiary automatically displays your schedule for the day by connecting to your calendar. This makes it easy to look back on the day and smoothly start writing in the diary. Even if you forget to keep a diary for a few days, you can easily keep a diary by checking the day's schedule. - Daily notifications make it a habit. Daily notifications help you keep a diary habit by sending you notifications at set times each day. - Simple design that you will never get tired of. Because it is an app that you touch every day, we paid special attention to the design. The simple design allows you to keep track of your daily activities intuitively without getting lost in the operations. - Security. You can set a password when you start the app to further enhance your privacy. You can also unlock the app with fingerprint or face-ID.
Screenshots
Verdict
The clearest difference is in-app purchases: LazyDiary at none against Diary! SmartDiary's 1. LazyDiary also leads on update cadence (every 4 days vs every 3 months) and rating (4.9 vs 4.6). Diary! SmartDiary's advantage is ratings volume (44 vs 11). On price, review sentiment, 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. Diary! SmartDiary sells 1 one-off in-app purchase. LazyDiary asks for nothing beyond the download.
LazyDiary holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 44 and 11 respectively. Written reviews point the same way: 93% of Diary! SmartDiary's written reviews are positive against 100% of LazyDiary's.
Diary! SmartDiary ships an update every 3 months, LazyDiary every 4 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | Diary! SmartDiary | LazyDiary |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (44 ratings) | 4.9 (11 ratings) — better |
| Positive reviews | 93.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 44 — better | 11 |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideki Okuno | Ryunosuke Nagase |
Customer experience
Diary! SmartDiary
LazyDiary
In-app purchases
Diary! SmartDiary
- Remove Ads$2.99
LazyDiary
No in-app purchases







