# Diary Journal with Lock vs Light Signals

The clearest difference is iOS requirement: Diary Journal with Lock at 17.0 against Light Signals's 26.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Diary Journal with Lock sells 3 in-app purchases, starting at $4.99 per 7 days and Light Signals sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Diary Journal with Lock ships an update every 2 weeks, Light Signals every 9 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Diary Journal with Lock | Light Signals |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/diary-journal-with-lock/id6748128912/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 99 MB | 5 MB |
| Requires iOS | **17.0** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yash Baraiya](https://appshunter.io/developer/1701081026) | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) |

## What reviewers say

### Diary Journal with Lock

[App page](https://appshunter.io/ios/app/diary-journal-with-lock/id6748128912)

Capture your thoughts, track your mood, and build a journaling habit in a secure, customizable space. This app offers guided prompts, mood insights, and expressive tools to help you reflect and grow.

**Highlights:** Daily journal and notes, Private diary lock (PIN, pattern, fingerprint), Customizable themes, colors, and fonts, Mood tracker with insightful charts, Smart templates for guided writing, Diary streaks and habit tracking, Auto backup and sync

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Monthly Subscription | $14.99 | per month |
| Yearly Subscription | $29.99 | per year |


### Light Signals

[App page](https://appshunter.io/ios/app/light-signals-morse-code/id6756871661)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Diary Journal with Lock free?

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

### Is Light Signals free?

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

### Do Diary Journal with Lock or Light Signals have ads?

Both Diary Journal with Lock and Light Signals show ads.

### Which is updated more often, Diary Journal with Lock or Light Signals?

Diary Journal with Lock ships an update every 2 weeks, and Light Signals every 9 days. Most recently, Diary Journal with Lock was updated on October 30, 2026 and Light Signals on October 30, 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.*