Notes Fort Knox: Meet The 10 Most Secure Note-Taking Apps

The notes we jot down are our private thoughts that deserve to be encrypted in a secure, digital notebook. We shouldn’t worry about who might read them. Like most users, I made the mistake of using whatever pre-installed app was on my smartphone. I’ve used Google Keep and my iPhone Notes app, but I needed to make a change. What are the best secure note-taking apps?

  1. Etherpad
  2. Standard Notes
  3. Joplin
  4. Turtl
  5. Laverna
  6. NextCloud + Notes
  7. HedgeDoc
  8. SilentNotes
  9. NoteRiot
  10. BONUS: DIY Method

I tested each of these notebook apps and included reasons why they’re better than their closed-source, make-a-buck-with-my-data services. Take a look at the pros and cons.

Man holding tablet with his encrypted and private notes app

Wait! First, here’s the judgement criteria:

  • Security & Privacy: How is data stored, transmitted/sync-ed, and encrypted?
  • Open Source: Is the code available for programmers to review and audit?
  • User Experience: Does the app have a pleasant and modern look and feel?
  • Ease-of-Use: Is typing, editing, and formatting easy? Are the menus and settings clear?
  • Features: Are there enough features to handle the average user’s needs?
  • Cross-Platform: Can you take notes as easily on a laptop, tablet, or smartphone?
  • Data Synchronization: Is data backed up and/or sync-ed across multiple devices?
  • Technical Know-How: Is the software hard to get installed, set up, and running?

1. Etherpad – Google Docs Alternative


Etherpad is a web-based note app, allowing multiple users to edit notes at the same time. Users simply go to a private URL address in their favorite browser and begin taking notes. Individual colors separate per-user edits. On-screen chat provides an extra layer of collaboration.

Versions are continuously tracked and note history can be played back like video.

Screenshot of etherpad showing a secure notes app

The newest user interface provides a clean and minimalist experience, and the time-to-first-note is unbeatable when using a hosted instance. The project maintains a list of hosted instances, with some explanations about the organization and caveats to each.

Etherpad is federated, which means you can download and install it on your web server. This gives you maximum control over data security.


Etherpad’s code has gone through a few rewrites, and as with many open-source projects, it contains technical debt (old, bad, or unused code).

The web-based-only interface means that the average user will need to rely on someone else to host a server, entrusting the server owner to keep their data safe and backed up. When testing on a mobile web browser, I was disconnected several times, hinting that this might not be a good offering for the on-the-go user.

While the project is simple to use, there’s not a lot of documentation and the community is small in comparison to other projects.

The average user will find the biggest hurdle in adoption is the lack of features.

How Etherpad Stacks Up

This note-taking app has more in common with Google Docs than an alternative to Google Keep or Evernote. It has some unique capabilities that might suffice for the casual note-taker, but will leave the more-serious users wanting better functionality.

2. Standard Notes – Secure Notes With Lots Of Features


Standard Notes prides itself as a privacy- and security-centric note app. The source code for all the platforms is on GitHub for code review.

The software does an impressive job of providing a clean and bright interface across its desktop and mobile app versions. The user experience is well-thought-out and logical, with menuing and clear settings. The web-based version performs very well.

The on-ramp is surprisingly short and fast from installation to your first note, which required no upfront account creation or keying.

Standard Notes also offers mobile apps (which I found user-friendly) from both the Google Play Store and the Apple App Store 


Standard Notes falls short in out-of-the-box features. Additional functionality comes from a variety of extensions that the user must install on each platform. Even formatting text inside notes or attaching images is not supported until an extension is added to the app.

Screenshot showing the standard notes private notes app

Using extensions requires a monthly subscription, which the average user may still find lacking needed functionality. There is however a free trial tier to get a sense of the offering before subscribing to one of their plans.

How Standard Note Stacks Up

Aside from the enhanced security and privacy of your data, users coming from Google Keep or Evernote will find even the features a large step backward.

3. Turtl – Notes App With A Version For Each OS


Turtl is a rather functional notebook. The developers have done an excellent job securely storing and synchronizing your note data.

This note-taking app provides several note types, reminiscent of the paradigm found in a password manager. One of the note types is labeled as “password”.

The desktop and mobile apps look identical, so users will feel at home with either client.


Turtl’s installation is fairly straightforward on Windows and mobile devices. Users on Mac and Linux will need to first unarchive the downloads and go through a manual installation.

You’ll need to create or log in to an account before taking your first note. While this is a familiar process, the developer devotes a whole step during sign-up to point out that there’s no password recovery option. This can be a bit off-putting for some.

Additionally, there is no web-based version as of this writing and the iOS/iPhone app is in progress.

There are no buttons to apply formatting to your notes. Users need to use Markdown for formatting. Here’s a short, 3-minute YouTube video showing the super basics of Markdown formatting.

How Turtl Stacks Up

Turtl provides a way to format plain-text notes and some additional organizing options, but it too is not as full-featured as Evernote. I found most of the options I needed to replicate Google Keep.

4. Joplin

Hero image showing the encrypted notes app, joplin, on a laptop, tablet, and smartphone


Joplin is the next step-up in cross-platform note-taking apps. The software provides text formatting buttons, drag-and-drop capabilities, and even a web clipping browser extension.

Users have notes organized in notebooks, which themselves can be organized into a hierarchy in the sidebar. Global search, templates, and import/export are snappy and provide a lot of flexibility.

Data backup and multi-device synchronization occur through a connected local directory, OneDrive, NextCloud, Dropbox, or WebDAV (generic web storage). All data is encrypted on your device before it’s transmitted and stored remotely.


Joplin scores well on its security, except for an issue about data stored unencrypted & without a password while on your local device. This might be a deal-killer if you’re looking for the most secure note-taking option. It’s worth noting the project added biometric authentication when launching the app.

You’ll need to go into the Joplin settings to create an encryption password. The application does not prompt you to turn on encryption during setup. Here’s how to create a strong and secure password.

The user experience is utilitarian, and the WYSIWYG editor functions well and converts to Markdown well enough. Joplin’s note tagging is functional, but clunky and lacks the multi-tag capability.

How Joplin Stacks Up

Joplin takes note (pun intended) of the organization from Evernote, but the user experience is basic. Users have some visual formatting buttons, but using Markdown is needed to be fully productive.

Just like Turl above, don’t let Markdown scare you.

This is my favorite secure notes app, especially since it gives me access to my notebook across multiple platforms and devices. 

Tip: Be sure to click the Synchronize button and wait before you close the app to make sure your notes are sent to your chosen, preferably free cloud storage.

5. Laverna – Getting To Your First Locked Note Fast


Laverna is just fast. The app’s onboarding process from installation to writing your first note is outstanding. Fast also refers to my experience in running this application. It’s amazingly responsive, mirroring the same performance across multiple devices.

The user experience is clean, modern, and minimalistic with the familiar placement of menus and work areas on each platform. Notes are plain text or formatted via visual buttons and Markdown with a handy line highlighter helping writers track their typing location.

Screenshot of the private notes app laverna. =

Notebooks help organize your content.

Laverna is federated, providing advanced users control of the software. For the average user, data is encrypted and then stored in Dropbox for backup and cross-device synchronization.


Laverna’s development progress has stalled as of this review. The Android version is yet-to-be-released, with an iOS/iPhone app only hinted at by the source code. Mobile users will only have a browser-based experience for the moment.

Dropbox’s free tier should be sufficient, but currently, it’s the only easy option for data synchronization. This project needs additional commercial and self-hosted options to truly gain the trust of average and advanced users.

How Laverna Stacks Up

This note-taking app is a suitable alternative to Evernote and easily surpasses the capabilities of Google Keep notes. If development picks back up, Laverna’s attention to polish could easily make this worthy secure digital notebook.

6. NextCloud + Notes – Keep Notes Safe On Your Server


NextCloud is an open-source collection of software that replicates productivity offerings from “big tech”. The techie, DIYer uses their server to host services like file storage (replaces Dropbox), calendar and contact organization (replacing Google), and even chat and video conferencing (replaces Skype or Hangouts) through a set of add-on apps.

The NextCloud Notes app added to your NextCloud server provides a basic set of note-taking functionality, including synchronization with mobile apps.

The clean, productivity-focused user interface/experience centers around simple categorized notes formatted in Markdown.

Screenshot of the self-hosted private notes app on nextcloud

In addition to categories, star-favoriting and integrated search round out this app add-on.

The security of NextCloud and thus your notes rely on the level of control, security, and encryption of the server as a federated project.


NexCloud and the Notes app require a tech-savvy enthusiast to set up and run. This level of experience and responsibility might not match the average user’s requirements.

How NextCloud + Notes Stacks Up

The Notes app under Nextcloud is a great alternative to Google Keep. It falls short in replicating the features of Evernote.

If you are tech-savvy, you should consider switching to a smartphone keyboard that respects your privacy so your notes and everything you type on your phone is more secure.

7. HedgeDoc – Self-Hosted Web-Based Docs For Your Notes


HedgeDocs (formerly CodiMD) is a collaborative notes web app allowing users to create and share Markdown-based docs via public links.

This editor is federated. You’ll need to find a hosted instance or run your own instance, which will give you greater control of your data.

The clean, minimalistic UI allows for dark and light themes and a presentation mode. A toolbar gives quick formatting help for users just getting started with Markdown during editing, and drag and drop is supported and well-implemented.

The free and open-source software (FOSS) project is under active development and there’s a supportive community of enthusiasts.


Once published, your notes cannot be unshared and those with the link to the files will continue to be able to view and edit the file.

How HedgeDoc Stacks Up

HedgeDoc fulfills a particular niche for users wanting a wide-open document collaboration tool. The development team has a clear use case around this offering and sticks to a target audience by providing this competent markdown editor.

8. SilentNotes – FOSS Version Of Google Keep


SilentNotes is another excellent choice for end-to-end encrypted notes. This free and open-source software (FOSS) offering has a committed developer with active project improvements.

The apps offer synchronization via 5 online storage services. User notebooks can stay updated between Windows computers and Android smartphone devices.

The WYSIWYG editor on both platforms is solid and among the better implementations, I’ve seen, especially for mobile.

SilentNotes actually feels most like Google Keep’s sticky note user interface, offering the same types of notes.


There are no Mac, Linux, or iOS app versions expected. I do wish there was an export function that allowed for backup and restore as disaster recovery.

How SilentNotes Stacks Up

Users that primarily work on Windows and Android operating systems will find SilentNotes a good fit.

9. NoteRiot– Blockchain-Based Notes App


NoteRiot is an exceptional example of merging technologies into a wonderfully secure note app with a modern and distraction-free experience. The web app is responsive and snappy, and data is encrypted before being sent over a secure connection to be stored on the blockchain.

Notes and to-do lists are the main focus of this note-taking app. Each note can be organized by a color, label and/or heart-shaped favorite toggle. Searching is instantaneous and filters directly to matching notes.

Formatting is accomplished through the use of Markdown or directly via a true WYSIWYG, visual editor, which is rare in all the reviewed apps.

Screenshot of noteriot, a blockchain secured notes app

The import option provides a clear set of instructions to bring your Google Keep notes over to NoteRiot. The export function creates a Markdown export, so you’re not ever locked into using NoteRiot.


NoteRiot is a browser-only notes app. Both desktop and mobile users will need their browser handy.

Dropped images are converted to base64 encoded code/text, which can be a bit hard to work around for Markdown users.

Screenshot of noteriot showing the markdown for the private notes app

To-Do lists are simply new notes with checkbox items. On the main dashboard of notes, ticking the checkbox causes the to-do note to open. This interaction was a bit of an unexpected experience.

How NoteRiot Stacks Up

NoteRiot is head-and-shoulders above Google Keep, especially for the focus on security and privacy. The project edges very close to Evernote’s capabilities but falls only slightly short due to the lack of native desktop and mobile apps.

10. BONUS: Secure & Sync Your Note Files


For the tech-savvy, consider simply storing your notes into folders and files on your device. You can securely synchronize them using Cryptomator and any free online storage provider of your choosing.  

This method also allows you the flexibility to use whatever editor you decide without being locked into a particular app or dealing with subscription plans.


Notes are not encrypted while on a smartphone or tablet, as Cryptomator is not treated as an actively mounted-storage location.

This approach can be clunky with lots of moving parts to get working smoothly.

How the DIY Approach Stacks Up

The DIY approach will not be for the average user who wants to take notes and stay productive. There’s value to having your tool(s) work for you instead of you working on your tools.

Other Questions You Might Have

Is the iPhone notes app secure? 

The iOS Notes app contains a “Lock Note” function, which encrypts individual notes with a passphrase. Based on this security white paper, Apple provides end-to-end encryption, tightly securing user notes even across devices or iCloud storage.

How do you encrypt iPhone notes? 

On the iOS Notes app select the “Lock Note” option and enter a unique password & password hint as described by Apple’s support page. For Android users, Google Keep does not currently have an encrypt option. Install a third-party notes app like Joplin or use your password manager to a secure note.

Can Apple read my notes? 

Apple’s iCloud notes and your iPhone Notes app on iOS are stored encrypted on Apple’s servers and covered by their privacy policy. For extra security, use the “Lock Note” option and set a password + hint. This adds another layer of privacy, preventing Apple from reading your notes.

Is Evernote private and secure?

Evernote offers encryption and optional two-factor authentication, enhancing its security for storing personal information. However, text within notes is not end-to-end encrypted by default, so sensitive information may be accessible by the service.

Is OneNote private and secure?

OneNote provides password protection and encryption for data in transit and at rest, bolstering its privacy and security. OneNote’s content is not end-to-end encrypted. Users should be mindful if sensitive content is saved in the app.

Mike Chu

Mike is a web developer and content writer living as a digital nomad. With more than 20 years of devops experience, he brings his "programmer with people skills" approach to help explain technology to the average user. Check out his full author bio by clicking here.

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