# MemoP vs Diamond Diary Notes With Lock

MemoP and Diamond Diary Notes With Lock both sit at 4.5 stars, but that hides the real split: 100% of MemoP's written reviews are positive against 50% of Diamond Diary Notes With Lock's. MemoP also leads on update cadence (every 9 days vs every 5 months). Diamond Diary Notes With Lock's advantage is ratings volume (8.6K vs 28) and device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. MemoP sells 1 one-off in-app purchase 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.

On the App Store both sit at effectively the same score — 4.5 for MemoP against 4.4 for Diamond Diary Notes With Lock. That said, the two scores are not equally well evidenced: Diamond Diary Notes With Lock has 8.6K ratings behind it against 28, so its average is the more settled of the two. Written reviews are what separate them: 100% of MemoP's written reviews are positive against 50% of Diamond Diary Notes With Lock's.

MemoP ships an update every 9 days, Diamond Diary Notes With Lock every 5 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MemoP | Diamond Diary Notes With Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (28 ratings)](https://appshunter.io/ios/app/memop/id1273592051/reviews)** | [4.4 (8.6K ratings)](https://appshunter.io/ios/app/diamond-diary-notes-with-lock/id1437141637/reviews) |
| Number of ratings | 28 | **8.6K** |
| Positive reviews | **100.0% of reviews** | 49.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 123 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Masashi Sasaoka](https://appshunter.io/developer/1124773279) | [Milica Petrovic](https://appshunter.io/developer/1436961056) |

## What reviewers say

### MemoP

[App page](https://appshunter.io/ios/app/memop/id1273592051)

Securely store your notes with password protection and biometric authentication. Organize, edit, and share your memos with ease, featuring customizable backgrounds and search capabilities.

**Highlights:** Password lock with Touch ID/Face ID, Drag and drop memo organization, Swipe to delete notes, Direct sharing to messages and social media, Customizable backgrounds from photo albums, Search and character search functions, Adjustable font size and color

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free | $1.99 | one-time |


### 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 MemoP free?

MemoP is free to download, with in-app purchases available.

### 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, MemoP or Diamond Diary Notes With Lock?

MemoP is rated higher. MemoP averages 4.5 out of 5 from 28 ratings, while Diamond Diary Notes With Lock averages 4.4 from 8.6K ratings.

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

Both MemoP and Diamond Diary Notes With Lock show ads.

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

MemoP ships an update every 9 days, and Diamond Diary Notes With Lock every 5 months. Most recently, MemoP was updated on October 6, 2026 and Diamond Diary Notes With Lock on October 14, 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.*