# Corluma vs Secret Diary with Locks

The clearest difference is review sentiment: Corluma at 100% against Secret Diary with Locks's 50%. Corluma also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Secret Diary with Locks sells 1 in-app purchase, starting at $0.99 per year. Corluma asks for nothing beyond the download.

Corluma ships an update every 3 weeks, Secret Diary with Locks every 3 months. The most recent releases landed on October 7, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Corluma | Secret Diary with Locks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/corluma/id1636211895/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 10 MB |
| Requires iOS | 17 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Seemann](https://appshunter.io/developer/1636212137) | [Harshad Jadav](https://appshunter.io/developer/1687259507) |

## What reviewers say

### Corluma

[App page](https://appshunter.io/ios/app/corluma/id1636211895)

Manage all your smart lights from a single application. Adjust colors with intuitive tools, create dynamic effects, and group lights for simultaneous control. Save and recall favorite settings, add timeouts, and access device-specific features.

**Highlights:** Unified smart light control, Color wheels, swatches, and palettes, Dynamic effects and streams, Group light management, Save and recall favorite settings, Device-specific features, Local Wi-Fi communication

**Features:** Vision Pro support

**In-app purchases:** none


### Secret Diary with Locks

[App page](https://appshunter.io/ios/app/secret-diary-with-locks/id6449743044)

Securely record your thoughts, memories, and personal moments with this private journal app. Protect your entries with a password, PIN, or biometric authentication. All data is stored locally and encrypted for complete privacy.

**Highlights:** Password, PIN, or biometric unlock, AES 256-bit encryption, Offline local storage, Unlimited entries, Advanced search, No internet permission

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Ad-Free - Annual | $0.99 | per year |


## Frequently asked questions

### Is Corluma free?

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

### Is Secret Diary with Locks free?

Secret Diary with Locks is free to download, with in-app purchases available.

### Do Corluma or Secret Diary with Locks have ads?

Neither Corluma nor Secret Diary with Locks shows ads.

### Which is updated more often, Corluma or Secret Diary with Locks?

Corluma ships an update every 3 weeks, and Secret Diary with Locks every 3 months. Most recently, Corluma was updated on October 7, 2026 and Secret Diary with Locks on October 27, 2026.

---

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