# Diary with lock — Colorful Diary, Journal, Note

> Secure, customizable digital journal for daily entries and personal notes. (iPhone/iPad app by Tuyen Bui.)

- Source: https://appshunter.io/ios/app/diary-with-lock/id1347511716 (this page in markdown: same URL + `.md`)
- Developer: [Tuyen Bui](https://appshunter.io/developer/1000285801)
- Category: Lifestyle, Utilities
- Price: Free with in-app purchases
- Rating: 4.30/5 from 1,247 App Store ratings · 159 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 39 MB
- Languages: English, Japanese, Vietnamese
- Released: 2018-03-09
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/diary-with-lock/id1347511716/reviews.md

## What is Diary with lock?

Use "Diary with lock" app to make your own personal journal of daily events, appointments, secrets and feelings.


****************FEATURES****************
• Diary with lock: Password & pin code protection
• Diary with lock: Personalize background color (Pink, Purple, Blue, ++)
• Diary with lock: Change font-style
• Diary with lock: Easy to use
• Diary with lock: Search entries
• Diary with lock: Make unlimited entries
• Diary with lock: Support 3 languages: English, Japanese, Vietnamese.
• Diary with lock: The most downloaded diary app on AppStore!
*******************************************


Build from the ground up to be simple and user friendly, the user interface is designed to allow you to enter new notes quickly and easily. With this Diary you can write all your private notes and secure them with a pin code or password.


* Track and write about your daily activities
Make it a habit to quickly write one or more mini-notes during your day. Simply leave a few words about your workout session, what happened at school or in the office during your day. In weekends, you can write about all the fun you had walking your dog, meeting with friends, or being social with your family. Make it a unique travel diary, or road journal that documents your journey. This can be the daily activity log you always have wanted. Make it your personal journal and have fun reading it over in few year, and share a few laughs with your friends. As this app is pure textual, and contains no images or photos, it runs ultra fast and smooth on any iOS device, and consumes minimal of available memory and disk-space!

* This diary is perfect to use as:

1. Diet journal
A food diary is a daily record of all food consumed as a means of tracking calorie consumption, weight loss or other nutritional monitoring.

2. Dream journal
Or dream diary is a journal in which dream experiences are recorded for later analysis and possibly oneiromancy.

3. Sleep diaries
A sleep log is a tool used in diagnosis of sleep disorders.

4. Travel journals
A travel diary, or road journal, is valuable documentation of a journey. (only textual, no images or photos)


5. Write your own Autobiography
This diary app can easily fit the purpose of a writing down your memoir or chronicle. Keep a log or logbook to record history. Do like famous Anne Frank, make daily records, document life in your own daybook.

Never forget a journal entry again, setup a reminder to alert you when it is time to write. Protect all personal notes by adding a pin code when it starts up. Never worry about losing memories again. Easily send a backup of diary entries directly to email for extra protection.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://privacy-policy-site-five-nu.vercel.app

## Key features

- Password & PIN code protection
- Customizable background colors
- Changeable font styles
- Easy-to-use interface
- Searchable entries
- Unlimited entries
- Multi-language support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Cloud Sync Monthly | $9.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Diary with lock-No Advertising | $8.99 | one-time |
| Donate to Developer | $5.99 | one-time |


## What do users think of Diary with lock?

Overall sentiment: neutral

**Pros**

- 🔒 Secure with password protection
- ✨ Customizable fonts and colors
- 📝 Easy to write entries
- 💻 Convenient digital diary

**Cons**

- 💸 Too many ads interrupting writing
- 🐛 Crashes and glitches when trying to write
- 💾 No backup or data recovery options
- 🔍 Partial visibility of entries even when locked

**Commonly reported bugs**

- Entries randomly disappearing
- Constant redirects to ads when trying to write
- Login/password reset not working properly

**Most requested features**

- Backup and sync entries across devices
- Fingerprint/Face ID support for locking
- Ability to change font size and color
- Option to disable ads for paid users

## Recent user reviews (10 of 159)

All indexed reviews: https://appshunter.io/ios/app/diary-with-lock/id1347511716/reviews.md

### 1/5 — It sucks

*2026-05-12, version 2.0*

I can’t do anything with it

### 5/5 — lol

*2025-09-18, version 2.0*

I really love it

### 3/5 — Too many adverts

*2025-08-04, version 2.0*

I would love to trial this app before purchasing but there’s an advert after the first diary entry and if I try and add something else then there’s another advert. Which I’m forced to watch all the way through.      I’d love to see this app working but can’t because of adverts.  If I do decide to buy it then will all the adverts vanish.   Very little information on what you get if purchased.    I’m sure I can give a 5 star review but need to try before I buy but I can’t due to far too many adverts.

### 1/5 — Please fix this

*2025-03-05, version 2.0*

Every time I try to start a new entry it gives me and ad. Which I know is supposed to happen but even when I watch the ad and try again it gives me another over and over again. It’s really annoying

### 4/5 — Diary apps

*2025-01-10, version 2.0*

Good service like

### 4/5 — Love this

*2024-12-17, version 2.0*

I had this app a few years ago and I had wrote in it but when I redownloaded it to and see my entry there is nothing there is there a way to get my entries back

### 2/5 — Save?

*2024-12-02, version 2.0*

I accidentally deleted the app and when I redownloaded it, all my entries are gone! I had really important information in there that I definitely could not remember. Is there a way to get it back?

### 5/5 — I LOVE THIS APP

*2024-10-20, version 2.0*

I LOVE LOVE LOVE LOVE THIS APP I get to put all my secrets in it

### 5/5 — I lost everything I wrote since 2023 on my diary

*2024-10-08, version 2.0*

I love everything about the app except from the fact that what ever you jot down in the diary does not backed up to your iCloud or email…. So if you lost your phone or mistakenly deleted the app you’ve lost everything 😩

### 5/5 — M

*2024-08-29, version 2.0*

Love it!!!!!sucure password too!

## Frequently asked questions about Diary with lock

### What is this app used for?

This app is designed to be a personal digital journal where you can record your daily events, appointments, secrets, and feelings. It allows you to track your activities, create a diet or dream journal, document travel, or even write your autobiography in a secure and private manner.

### How do I protect my entries?

Your personal entries are protected by a password or PIN code. You can set this up when you start using the app, and it will prompt you for the code each time you open it, ensuring your private thoughts remain confidential.

### Is this app free to use?

The app is free to download and use, offering core journaling features. It also includes in-app purchases, which may unlock additional customization options or features for enhanced personalization.

### What devices is this app compatible with?

The description mentions that the app runs 'ultra fast and smooth on any iOS device' and consumes minimal memory and disk-space. This suggests it is designed for iOS devices.

### Can I back up my diary entries?

Yes, you can easily send a backup of your diary entries directly to your email for extra protection. This ensures that your memories are safe and can be recovered if needed.

## Version history (last 5 releases)

### 2.3 — 2026-05-24

• Added a public Privacy Policy page for Cloud Sync review compliance.
• Updated the in-app subscription flow to open the correct Privacy Policy link.
• Cloud Sync Monthly remains optional for Google Sign-In backup and restore.
• Offline diary mode continues to work without a subscription.
• Improved App Store subscription review readiness.

### 2.2 — 2026-05-20

• Added a public Privacy Policy page for Cloud Sync review compliance.
• Updated the in-app subscription flow to open the correct Privacy Policy link.
• Cloud Sync Monthly remains optional for Google Sign-In backup and restore.
• Offline diary mode continues to work without a subscription.
• Improved App Store subscription review readiness.

### 2.1 — 2026-05-14

• Added Cloud Sync Monthly for syncing diaries across devices.
• Added Google sign-in for cloud backup and restore.
• Existing local diaries can now sync to your cloud account after sign-in.
• Added restore support when opening Diary with Lock on a new device.
• Added logout and account switching support.
• Improved attachment backup with compressed image sync fallback.
• Improved passcode flow with account-based recovery preparation.
• Fixed date picker display issues.
• Added English, Japanese, and Vietnamese localization updates.
• Improved left menu icons, sync status, and loading progress during cloud sync.

### 2.0 — 2021-01-06

New version 2.0:
- Fix bug keyboard overlaying writing area.
- Fix bug Password screen able to dismissed.

### 1.7 — 2020-12-06

Honestly, we'd like to super say Thank you for using app and making some helpful feedback. 
New version 1.7:
- Fix bug Dark layout
- Improve Diary layout

## Apps similar to Diary with lock

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [My Diary - Journal with Lock](https://appshunter.io/ios/app/my-diary-journal-with-lock/id1579321589) | 4.7 (27,979) | Free | Lifestyle |
| [Daily Journal: Diary with Lock](https://appshunter.io/ios/app/daily-journal-diary-with-lock/id1605113008) | 4.8 (5,484) | Free | Lifestyle |
| [Journal X: My Diary with Lock](https://appshunter.io/ios/app/journal-x-my-diary-with-lock/id1360257373) | 4.5 (1,845) | Free | Lifestyle |
| [Simple Diary - Daily Journal](https://appshunter.io/ios/app/simple-diary-daily-journal/id1388195923) | 4.7 (906) | Free | Lifestyle |
| [Diary, Journal, Notes - Diaro](https://appshunter.io/ios/app/diary-journal-notes-diaro/id882519460) | 4.7 (4,483) | Free | Lifestyle |
| [Diary Journal - With Lock](https://appshunter.io/ios/app/diary-journal-with-lock/id1572225395) | 4.7 (360) | Free | Lifestyle |

## More apps by Tuyen Bui

- [Mẹ và Bé yêu-Ứng dụng nuôi dạy bé từ 0 đến 5 tuổi](https://appshunter.io/ios/app/me-va-be-yeu-ung-dung-nuoi-day-be-tu-0-en-5-tuoi/id1000383234)
- [LGBT Wallpapers 4K HD](https://appshunter.io/ios/app/lgbt-wallpapers-4k-hd/id1016276503)
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- [Barack Obama Wallpapers HD](https://appshunter.io/ios/app/barack-obama-wallpapers-hd/id1212040502)
- [Kitty Cat Wallpapers 4K HD](https://appshunter.io/ios/app/kitty-cat-wallpapers-4k-hd/id1214628268)
- [Dog Wallpapers - Cute Puppies Themes For Mobile](https://appshunter.io/ios/app/dog-wallpapers-cute-puppies-themes-for-mobile/id1215715574)

All apps by Tuyen Bui: https://appshunter.io/developer/1000285801

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*