# LOCK MEMO vs ココだけのチャット

The clearest difference is in-app purchases: ココだけのチャット at none against LOCK MEMO's 1. ココだけのチャット also leads on ads (none vs shown) and device support (3 vs 1). LOCK MEMO's advantage is update cadence (monthly vs every 7 months). On price there is nothing between them.

Both are free to download. LOCK MEMO sells 1 in-app purchase, starting at $0.99 per month. ココだけのチャット asks for nothing beyond the download.

LOCK MEMO ships an update monthly, ココだけのチャット every 7 months. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | LOCK MEMO | ココだけのチャット |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (495 ratings)](https://appshunter.io/ios/app/lock-memo-secure-notes/id1070901429/reviews)** | — |
| Number of ratings | **495** | — |
| Positive reviews | 74.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 2 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [EasterEggs](https://appshunter.io/developer/553389214) | [MUNEATSU G.K.](https://appshunter.io/developer/1534902759) |

## What reviewers say

### LOCK MEMO

[App page](https://appshunter.io/ios/app/lock-memo-secure-notes/id1070901429)

This app offers a straightforward way to create and manage private notes with robust passcode protection. It's designed for intuitive use, requiring no complex setup to keep your personal information, ideas, and daily entries secure and organized.

**Highlights:** Passcode protection, Create and edit notes, Folder management, Search notes, iCloud backup, Adjustable font size

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.99 | per month |

**What reviewers like**

- 👍 Very easy to use and intuitive
- 🔒 Password protection and security features
- 💾 Reliable for storing notes and important information
- ⚡ Simple and lightweight application
- 📝 Great for quick memos and memory jogger

**What reviewers complain about**

- 🐛 Notes disappearing unexpectedly
- 🐛 Edit function stops working after extended use
- 📱 Compatibility issues with newer iOS versions
- ❌ No alphabetical sorting capability
- ❌ No search functionality

**Reported bugs**

- Notes disappearing from folders
- Edit function becomes unavailable
- App incompatible with newer iOS versions
- Touch ID not functioning despite advertised
- Password recovery issues

**Requested features**

- Alphabetical sorting of notes
- Search functionality
- Touch ID/biometric authentication
- Text formatting options (bold, underline, italics)
- Ability to share or export notes


### ココだけのチャット

[App page](https://appshunter.io/ios/app/id1624377243)

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

**In-app purchases:** none


## Frequently asked questions

### Is LOCK MEMO free?

LOCK MEMO is free to download, with in-app purchases available.

### Is ココだけのチャット free?

ココだけのチャット is free to download, with no in-app purchases.

### Do LOCK MEMO or ココだけのチャット have ads?

LOCK MEMO shows ads; ココだけのチャット does not.

### Which is updated more often, LOCK MEMO or ココだけのチャット?

LOCK MEMO ships an update monthly, and ココだけのチャット every 7 months. Most recently, LOCK MEMO was updated on October 17, 2026 and ココだけのチャット on October 2, 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.*