# Secret diary vs ChapterLamp

The clearest difference is in-app purchases: ChapterLamp at none against Secret diary's 5. ChapterLamp also leads on ads (none vs shown). Secret diary's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Secret diary sells 5 in-app purchases, starting at $2.99 per month. ChapterLamp asks for nothing beyond the download.

Secret diary ships an update every 3 weeks, ChapterLamp fortnightly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Secret diary | ChapterLamp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/secret-diary-locked-journal/id6739699394/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 83 MB | 16 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chandan Kumar](https://appshunter.io/developer/1786559128) | [Shanghai Runesmith Artificial Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1872991929) |

## What reviewers say

### Secret diary

[App page](https://appshunter.io/ios/app/secret-diary-locked-journal/id6739699394)

This app provides a secure and customizable space for journaling, mood tracking, and memory keeping. Enhance your entries with photos, stickers, and personalized themes. Organize your thoughts with tags and find them easily with smart search.

**Highlights:** Secure passcode, pattern, or password lock, Mood tracking and emotional analytics, Add photos, stickers, and backgrounds to entries, Organize entries with tags, Customizable themes, fonts, and colors, Backup and restore functionality, Daily writing reminders

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diary Premium Monthly | $2.99 | per month |
| Diary Premium Yearly | $14.99 | per year |
| Diary Annual Subscription | $14.99 | per year |
| Diary Premium - Lifetime | $19.99 | one-time |
| Diary premium lifetime | $39.99 | one-time |


### ChapterLamp

[App page](https://appshunter.io/ios/app/chapterlamp/id6767974395)

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

**In-app purchases:** none


## Frequently asked questions

### Is Secret diary free?

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

### Is ChapterLamp free?

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

### Do Secret diary or ChapterLamp have ads?

Secret diary shows ads; ChapterLamp does not.

### Which is updated more often, Secret diary or ChapterLamp?

Secret diary ships an update every 3 weeks, and ChapterLamp fortnightly. Most recently, Secret diary was updated on November 4, 2026 and ChapterLamp on November 5, 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.*