# Lock Notes vs Adamas CXC

The clearest difference is in-app purchases: Adamas CXC at none against Lock Notes's 7. Adamas CXC also leads on iOS requirement (13.0 vs 15.0). Lock Notes's advantage is update cadence (every 10 days vs every 15 months). On price, ads and device support there is nothing between them.

Both are free to download. Lock Notes sells 7 in-app purchases, starting at $4.99 per 7 days. Adamas CXC asks for nothing beyond the download.

Lock Notes ships an update every 10 days, Adamas CXC every 15 months. The most recent releases landed on September 22, 2026 and December 21, 2025 respectively.

## The numbers

| Metric | Lock Notes | Adamas CXC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (137 ratings)](https://appshunter.io/ios/app/lock-notes-private-journal/id1211884686/reviews)** | — |
| Number of ratings | **137** | — |
| Positive reviews | 56.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 15 months |
| Monetization | Subscription | — |
| Size | 15 MB | 10 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LYKOV STUDIO LTD](https://appshunter.io/developer/1783754094) | [Adamas B.V.](https://appshunter.io/developer/1767325040) |

## What reviewers say

### Lock Notes

[App page](https://appshunter.io/ios/app/lock-notes-private-journal/id1211884686)

Securely store private thoughts, passwords, and reminders with biometric authentication. Enjoy a simple, elegant interface with iCloud sync, customizable themes, and backup options. Your data remains private and encrypted.

**Highlights:** Biometric authentication (Face ID, Touch ID), Encrypted note storage, iCloud sync across devices, Customizable themes and dark mode, Backup and restore functionality, Ad-free minimalist interface

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Monthly | $7.99 | per month |
| Annual | $29.99 | per year |
| Annual | $29.99 | per year |
| Disable ads | $0.99 | one-time |
| Lifetime | $39.99 | one-time |


### Adamas CXC

[App page](https://appshunter.io/ios/app/adamas-cxc/id6670744022)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lock Notes free?

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

### Is Adamas CXC free?

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

### Do Lock Notes or Adamas CXC have ads?

Neither Lock Notes nor Adamas CXC shows ads.

### Which is updated more often, Lock Notes or Adamas CXC?

Lock Notes ships an update every 10 days, and Adamas CXC every 15 months. Most recently, Lock Notes was updated on September 22, 2026 and Adamas CXC on December 21, 2025.

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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.*