# Note Lock ~ Keep your secret vs U

The clearest difference is price: U at Free against Note Lock ~ Keep your secret's $1.99. U also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 10). Note Lock ~ Keep your secret's advantage is ratings volume (153 vs 1). On update cadence, ads and device support there is nothing between them.

U is free to download; Note Lock ~ Keep your secret costs $1.99 up front. Note Lock ~ Keep your secret sells 10 in-app purchases, starting at $1.99 per month. U asks for nothing beyond the download.

U holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Note Lock ~ Keep your secret has 153 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Note Lock ~ Keep your secret | U |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.0 (153 ratings)](https://appshunter.io/ios/app/note-lock-keep-your-secret/id469850764/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/u-level/id1448340593/reviews)** |
| Number of ratings | **153** | 1 |
| Positive reviews | 53.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 18 MB |
| Requires iOS | 17.0 | **14** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [i-App Creation Co., Ltd.](https://appshunter.io/developer/360704053) | [Mike East](https://appshunter.io/developer/1459101077) |

## What reviewers say

### Note Lock ~ Keep your secret

[App page](https://appshunter.io/ios/app/note-lock-keep-your-secret/id469850764)

Securely store and manage private notes, ideas, and journals with advanced locking mechanisms and privacy features. Organize your thoughts with rich media, customization options, and backup capabilities.

**Highlights:** Folder and pattern lock, Anti-intruder surveillance, Self-destruct data option, Add pictures and stickers, Customizable themes and fonts, Backup and restore data, Calendar and hybrid views

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Note Lock PRO - Monthly | $1.99 | per month |
| Note Lock PRO - Yearly | $9.99 | per year |
| Pro Fonts | $1.99 | one-time |
| Special Fonts | $1.99 | one-time |
| Unique Fonts 1 | $1.99 | one-time |
| Unique Fonts 3 | $1.99 | one-time |
| Cute Fonts | $1.99 | one-time |
| Unique Fonts 2 | $1.99 | one-time |
| Unlock All Fonts | $6.99 | one-time |
| Unlock All In-app | $29.99 | one-time |

**What reviewers like**

- 🔒 Secure storage of private information
- 👍 Easy to use and intuitive interface
- 🚀 Quick access to notes
- 💡 Innovative decoy mode to deter snooping

**What reviewers complain about**

- 🐛 Frequent crashes and freezing issues
- 🔋 Concerns about data loss and lack of backup options
- 👎 Subscription model and loss of functionality in free version
- 🤯 Incompatibility with latest iOS versions

**Reported bugs**

- App crashes when opening notes
- Unable to rotate screen in landscape mode
- Password reset and migration issues when switching devices

**Requested features**

- Search function to easily find notes
- Ability to organize notes into folders
- Syncing and backup options (e.g., iCloud)
- Customization options for fonts, themes, and layouts


### U

[App page](https://appshunter.io/ios/app/u-level/id1448340593)

This professional tool allows construction professionals to precisely measure 3D terrain and hardscape elements. It captures X, Y, and Z coordinates, calculates slope percentages, and displays elevation above sea level. Users can save, email, or upload survey data directly into CAD software for accurate job bidding.

**Highlights:** 3D X,Y,Z measurement plotting, Save, email, and upload survey data, Direct CAD integration, Calculate % of slope, Feet above sea level elevation, Photos with data, Compass functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Note Lock ~ Keep your secret free?

Note Lock ~ Keep your secret costs $1.99, and also offers in-app purchases.

### Is U free?

U is free to download, with no in-app purchases.

### Which has better reviews, Note Lock ~ Keep your secret or U?

U is rated higher. Note Lock ~ Keep your secret averages 4.0 out of 5 from 153 ratings, while U averages 5.0 from 1 ratings.

### Do Note Lock ~ Keep your secret or U have ads?

Neither Note Lock ~ Keep your secret nor U shows ads.

### Which is updated more often, Note Lock ~ Keep your secret or U?

Note Lock ~ Keep your secret ships an update every 2 months, and U every 2 months. Most recently, Note Lock ~ Keep your secret was updated on October 22, 2026 and U on October 20, 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.*