# Secret Diary with Lock vs AIdiary

The clearest difference is in-app purchases: AIdiary at none against Secret Diary with Lock's 4. AIdiary also leads on ads (none vs shown). Secret Diary with Lock's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and update cadence there is nothing between them.

Both are free to download. Secret Diary with Lock sells 4 in-app purchases, starting at $4.99 per month. AIdiary asks for nothing beyond the download.

Secret Diary with Lock ships an update weekly, AIdiary every 9 days. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Secret Diary with Lock | AIdiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (739 ratings)](https://appshunter.io/ios/app/secret-diary-with-lock-muse/id1151869610/reviews)** | — |
| Number of ratings | **739** | — |
| Positive reviews | 78.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 62 MB | 26 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Bogdan Filippov](https://appshunter.io/developer/1108017036) | [Luca Ceci](https://appshunter.io/developer/923764949) |

## What reviewers say

### Secret Diary with Lock

[App page](https://appshunter.io/ios/app/secret-diary-with-lock-muse/id1151869610)

This app allows you to capture and preserve life's moments with rich detail. Protect your thoughts with biometric or passcode locks, personalize your entries with various media, and sync across devices. It's designed to make journaling an enjoyable and secure experience.

**Highlights:** Password, Face, and Fingerprint Lock, Multiple Customizable Journals, Add Photos, Audio, Geolocation, Mood, Weather, iCloud Synchronization, Journaling Reminders, Elegant and Intuitive Design

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Muse Plus: Monthly | $4.99 | per month |
| Muse Plus: Annual Individual | $24.99 | per year |
| Muse Plus: Family Yearly | $29.99 | per year |
| Muse Plus: Family Lifetime | $59.99 | one-time |

**What reviewers like**

- 🔒 Secure with password/fingerprint lock
- 👍 Simple and easy to use interface
- 📸 Ability to add photos to entries
- 🩷 Customizable appearance (colors, icons)

**What reviewers complain about**

- 🐛 Issues with text editing and cursor jumping
- 💤 Occasional app freezes and crashes
- 📢 Intrusive ads and paywalls
- 🔍 Difficulty finding/accessing older entries

**Reported bugs**

- Entries sometimes disappear or get deleted
- Syncing issues with iCloud
- App getting stuck during setup

**Requested features**

- Calendar view for entries
- Multiple photo support per entry
- Formatting options (bold, italic, etc.)
- Ability to change password


### AIdiary

[App page](https://appshunter.io/ios/app/aidiary/id6499354197)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Secret Diary with Lock free?

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

### Is AIdiary free?

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

### Do Secret Diary with Lock or AIdiary have ads?

Secret Diary with Lock shows ads; AIdiary does not.

### Which is updated more often, Secret Diary with Lock or AIdiary?

Secret Diary with Lock ships an update weekly, and AIdiary every 9 days. Most recently, Secret Diary with Lock was updated on November 6, 2026 and AIdiary on October 27, 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.*