# Lock Notes Pro vs Diamond Diary Notes With Lock

The clearest difference is price: Diamond Diary Notes With Lock at Free against Lock Notes Pro's $9.99. Diamond Diary Notes With Lock also leads on ratings volume (8.6K vs 270). Lock Notes Pro's advantage is ads (none vs shown) and review sentiment (82% vs 50%). On in-app purchases and device support there is nothing between them.

Diamond Diary Notes With Lock is free to download; Lock Notes Pro costs $9.99 up front. Lock Notes Pro sells 1 in-app purchase, starting at $14.99 per year and Diamond Diary Notes With Lock sells 8 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.

Lock Notes Pro holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Diamond Diary Notes With Lock has 8.6K ratings behind it against 270, so its average is the more settled of the two. Written reviews point the same way: 82% of Lock Notes Pro's written reviews are positive against 50% of Diamond Diary Notes With Lock's.

Lock Notes Pro ships an update every 2 weeks, Diamond Diary Notes With Lock every 5 months. Both last shipped on September 24, 2026.

## The numbers

| Metric | Lock Notes Pro | Diamond Diary Notes With Lock |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.6 (270 ratings)](https://appshunter.io/ios/app/lock-notes-pro/id1052612947/reviews)** | [4.4 (8.6K ratings)](https://appshunter.io/ios/app/diamond-diary-notes-with-lock/id1437141637/reviews) |
| Number of ratings | 270 | **8.6K** |
| Positive reviews | **82.3% of reviews** | 49.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 8 MB | 123 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JulyApps Ltd](https://appshunter.io/developer/427694580) | [Milica Petrovic](https://appshunter.io/developer/1436961056) |

## What reviewers say

### Lock Notes Pro

[App page](https://appshunter.io/ios/app/lock-notes-pro/id1052612947)

Securely store and protect your private notes with password or Touch ID access. This app allows you to keep sensitive information like passwords, secrets, and diaries safe from unauthorized viewing. It offers features like iCloud backup and syncing, image insertion, and printing.

**Highlights:** Password and Touch ID protection, iCloud backup and sync, Insert images and photos, Print notes, Sort and customize notes, Security question recovery

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto Backup | $14.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🔒 Secure storage of notes
- 💡 Useful for organizing personal information
- 🚀 Efficient app performance
- 🔒 Password protection for notes

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔒 Concerns about data loss or backup issues
- 🔒 Difficulty restoring notes from backup
- 💡 Lack of advanced features like checklists or reminders

**Reported bugs**

- Crashes after iOS updates
- Unable to edit or update notes without losing data
- Syncing issues between devices

**Requested features**

- Add checklist functionality
- Implement a recycle bin for deleted notes
- Improve syncing and backup options
- Add more customization options for font, layout, etc.


### Diamond Diary Notes With Lock

[App page](https://appshunter.io/ios/app/diamond-diary-notes-with-lock/id1437141637)

Securely record your thoughts, memories, and ideas in a private digital journal. Personalize entries with photos, emoticons, and custom fonts. Protect your secrets with password, pattern, or biometric locks.

**Highlights:** Password/Biometric Lock, Add Photos & Emoticons, Customizable Fonts & Backgrounds, iCloud Sync, Search & Calendar View, Write & Edit Entries

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $3.49 | per month |
| 1 Week Subscription | $6.99 | per 7 days |
| 6 Months Subscription | $17.99 | per 6 months |
| 1 Year Subscription | $28.99 | per year |
| 1 Year Subscription | $29.99 | per year |
| 1 Year Subscription | $59.99 | per year |
| Lock Diary | $1.99 | one-time |
| Remove ADs | $1.99 | one-time |

**What reviewers like**

- 💎 Customizable fonts and images
- 📆 Organized calendar view
- 🔒 Secure diary for personal thoughts
- 📝 Convenient digital diary on phone

**What reviewers complain about**

- 💰 Paid lock feature
- 🔍 Lack of free privacy options
- 📢 Excessive ads
- 🤔 Confusing date display

**Reported bugs**

- Crashes and unexpected shutdowns
- Date display issues

**Requested features**

- Free locking option
- Fingerprint/passcode protection
- Improved scrolling and editing
- More font and customization choices


## Frequently asked questions

### Is Lock Notes Pro free?

Lock Notes Pro costs $9.99, and also offers in-app purchases.

### Is Diamond Diary Notes With Lock free?

Diamond Diary Notes With Lock is free to download, with in-app purchases available.

### Which has better reviews, Lock Notes Pro or Diamond Diary Notes With Lock?

Lock Notes Pro is rated higher. Lock Notes Pro averages 4.6 out of 5 from 270 ratings, while Diamond Diary Notes With Lock averages 4.4 from 8.6K ratings.

### Do Lock Notes Pro or Diamond Diary Notes With Lock have ads?

Diamond Diary Notes With Lock shows ads; Lock Notes Pro does not.

### Which is updated more often, Lock Notes Pro or Diamond Diary Notes With Lock?

Lock Notes Pro ships an update every 2 weeks, and Diamond Diary Notes With Lock every 5 months. Most recently, Lock Notes Pro was updated on September 24, 2026 and Diamond Diary Notes With Lock on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*