# D3: Dot Lock Notes 3 Security — Data Safety With DLN Secure

> Secure note-taking app with a dot lock pattern for data protection. (iPhone/iPad app by Suneet Amrute.)

- Source: https://appshunter.io/ios/app/d3-dot-lock-notes-3-security/id987075593 (this page in markdown: same URL + `.md`)
- Developer: [Suneet Amrute](https://appshunter.io/developer/329478050)
- Category: Utilities, Productivity
- Price: $0.99
- Rating: 4.40/5 from 7 App Store ratings
- Age rating: 4+
- Requires: iOS 9.0 · 15 MB
- Languages: American English
- Released: 2015-05-01
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/d3-dot-lock-notes-3-security/id987075593/reviews.md

## What is D3?

Welcome to D3: Dot Lock Notes 3 Security app! Now secure your Important Things.

D3: Dot Lock Notes 3 Security 

- Update for iOS 15.5
- Optimised for iPhone XS, XS Max or earlier.
- Updated to Swift 4.2 and all iPad devices.

- Exciting new addition.
- Elegant Design.
- It's all about Beauty and Design. 

Dot Lock Notes 3 provides a secure way to keep your secret notes, important passwords, details, etc. SECURE! WITH this app your notes will be secured with a DOT LOCK PATTERN which will provide access to only you who knows the secret code that you have set. No one else will get access to your notes. Now be assured that with this app you can really find an extremely secure way to keep your bank details, passwords, law related details completely and safety secured.This includes:Dot-Lock pattern.

HOW TO USE: 
- Set the Dot-Lock passcode and remember it on your iPhone, by tapping Set Lock.

- The app will reveal your important things only when the passcode matches.

This includes:
Dot-Lock pattern

## Key features

- Dot lock pattern security
- Secure storage for notes and passwords
- Elegant and beautiful design
- Optimized for various Apple devices
- Swift 4.2 updated


## Frequently asked questions about D3

### What is D3: Dot Lock Notes 3 Security?

D3: Dot Lock Notes 3 Security is a utility app designed to securely store your private notes, passwords, and other sensitive details using a unique dot lock pattern.

### How does D3: Dot Lock Notes 3 Security protect my data?

Your data is protected by a personalized dot lock pattern passcode that you set. Only users who know this secret code can access the stored information.

### What devices does D3: Dot Lock Notes 3 Security support?

This app is optimized for iPhone, iPad, and iPod devices, including specific optimizations for iPhone XS, XS Max, and earlier models.

### How often is D3: Dot Lock Notes 3 Security updated?

The app was last updated on September 18, 2022, with version 9.3. It has been updated for iOS 15.5 and Swift 4.2.

### What is the price of D3: Dot Lock Notes 3 Security?

D3: Dot Lock Notes 3 Security is a paid app, priced at $0.99.

### Does D3: Dot Lock Notes 3 Security have ads?

No, D3: Dot Lock Notes 3 Security does not contain advertisements.

### What is the age rating for D3: Dot Lock Notes 3 Security?

The app has an age rating of 4+, making it suitable for a wide range of users.

### What do users think of D3: Dot Lock Notes 3 Security?

Based on available data, the app has a rating of 4.4 stars from 7 ratings, indicating generally positive user sentiment.

## Version history (last 5 releases)

### 9.3 — 2022-09-18

Update for iOS 15.5

### 8.1 — 2018-10-16

- minor bug fix.

### 8.0 — 2018-10-15

- Update for iOS 12.
- Optimised for iPhone XS, XS Max or earlier.
- Updated to Swift 4.2.

### 7.3 — 2018-08-13

D3: Dot Lock Notes 3 Security, completely re-written in Swift 4.0.

Optimised for iPhone X, 8, 8 Plus or earlier and all iPad devices.

Beware*:- THIS UPDATE WILL LEAD TO DATA LOSS. The data saved in this app will be lost on update. Kindly, make a backup of the saved notes data by copying (by double tapping on the notes page, select all, copy) and paste in the default notes app on the iPhone or iPad device. You can copy this data back to the new updated D3: Dot Lock Notes 3 Security app, and later delete the backup data from the default notes app on your device for safety.

### 7.2.1 — 2018-05-01

- Update for iOS 11.3

- Bug fixes & improvements

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All apps by Suneet Amrute: https://appshunter.io/developer/329478050

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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 2026-06-10.*