Software Alternatives, Accelerators & Startups

ReasonML VS PrivacyNotes

Compare ReasonML VS PrivacyNotes and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

ReasonML logo ReasonML

ReasonML is a new face to OCaml that--when coupled with BuckleScript--makes web development easy...

PrivacyNotes logo PrivacyNotes

Zero-knowledge encrypted notes, tasks, journals, files, and passwords in one app. Your keys never leave your device. One-time price, no subscription. Hosted in Switzerland.
Visit Website
  • ReasonML Landing page
    Landing page //
    2021-09-20
  • PrivacyNotes Journal
    Journal //
    2026-06-25
  • PrivacyNotes Settings
    Settings //
    2026-06-25
  • PrivacyNotes Website
    Website //
    2026-06-25

PrivacyNotes is a zero-knowledge encrypted workspace that brings your notes, tasks, journals, files, and passwords into one app, so you stop juggling four separate subscriptions.

Everything is encrypted on your device with XChaCha20-Poly1305 before it ever syncs. Your keys are derived from a recovery phrase that never touches our servers, so we cannot read your content, your filenames, or anything else. This is real zero-knowledge, not a marketing label.

Five pillars, one encrypted app:

  • Notes - a live markdown editor with note-to-note links, tags, and fast full-text search
  • Tasks - native checklists and task management next to your notes
  • Journals - daily entries with built-in mood, sleep, and medication tracking
  • Files - an encrypted vault for images, audio, and attachments
  • Vault - lock sensitive notes and logins behind a PIN or biometrics

Built for privacy, not surveillance:

  • No ads, no trackers, no analytics, ever
  • Sign in anonymously with a recovery phrase or with Google. No email or personal details required.
  • Open core: the encryption layer and database schema are published for independent review
  • Burn notes: self-destructing shares the server cannot read

Pricing that respects you:

  • Free covers every pillar with two-device sync and offline use
  • Pro is a one-time free, not a subscription, adding unlimited devices, note history, and more storage
  • Optional storage add-ons when you need them

Works on web, macOS, and soon iOS, Android, Windows and Linux with a responsive mobile layout. Import from Apple Notes, Standard Notes, Google Keep, Obsidian, and markdown in a few clicks.

ReasonML

Pricing URL
-
$ Details
Platforms
-
Release Date
-

PrivacyNotes

$ Details
freemium $48.0 / One-off (Early adopter price)
Platforms
MacOS Web Firefox Google Chrome Edge Safari
Release Date
2026 June
Startup details
Country
Switzerland
Employees
1 - 9

ReasonML features and specs

  • Type Safety
    ReasonML offers strong type inference and static type checking, which helps catch errors at compile time rather than at runtime, leading to more reliable code.
  • Compiled to Efficient JavaScript
    ReasonML can compile to highly efficient JavaScript through the BuckleScript backend, allowing developers to build performant web applications.
  • Interoperability
    ReasonML is designed to interoperate smoothly with JavaScript, which means you can incorporate it into existing JavaScript codebases without major restructuring.
  • OCaml Ecosystem
    ReasonML is built on top of the OCaml language, allowing developers to leverage the robust OCaml ecosystem, tools, and libraries.
  • Familiar Syntax
    ReasonML provides a syntax that is more familiar and approachable to JavaScript developers, making it easier to adopt and learn.

Possible disadvantages of ReasonML

  • Steep Learning Curve
    For developers not familiar with functional programming or OCaml, ReasonML can present a steep learning curve due to its paradigmatic differences from JavaScript.
  • Smaller Community
    ReasonML has a comparatively smaller community compared to other languages and frameworks, which might make finding resources or getting support more challenging.
  • Limited Libraries
    While it benefits from the OCaml ecosystem, the specific set of libraries and resources for ReasonML is still limited compared to JavaScript and its numerous frameworks.
  • Complex Tooling
    Setting up ReasonML projects can be complex due to its tooling and build systems, which might require more time to configure and understand.
  • Evolving Language
    ReasonML and its ecosystem are still evolving, with changes and updates that might require developers to frequently adapt their codebases.

PrivacyNotes features and specs

  • Privacy-focused
    PrivacyNotes is designed with privacy as a core principle, aiming to keep your notes secure and away from third-party access, which appeals to users concerned about data confidentiality.
  • Encryption
    The service typically emphasizes encryption to protect note content, meaning your data is scrambled and less vulnerable to unauthorized reading if intercepted or stored.
  • Ephemeral notes
    Many privacy note services offer self-destructing or temporary notes that automatically delete after being read or after a set time, reducing the digital footprint left behind.
  • Simple and lightweight
    Such tools often provide a clean, minimal interface focused on quick note creation and sharing without unnecessary features, making it easy to use.
  • No account required
    Privacy-oriented note apps frequently allow you to create and share notes without registration, lowering the barrier to entry and reducing personal data collection.

Analysis of ReasonML

Overall verdict

  • ReasonML is particularly well-regarded for its ability to bring the power of OCaml to the JavaScript ecosystem, making it good for developers who need strong type safety and functional programming paradigms. It is well-suited for those who appreciate type inference and immutability.

Why this product is good

  • ReasonML is a syntax extension and toolchain for OCaml, aimed at making the language more approachable while retaining its functional programming strengths. It offers strong type inference, immutability, and robust module systems. It also integrates seamlessly with JavaScript through BuckleScript, making it a great choice for web developers looking to leverage functional programming concepts in their applications.

Recommended for

  • Developers interested in functional programming
  • Teams working extensively with both OCaml and JavaScript
  • Web developers seeking a type-safe language that compiles to JavaScript
  • Those looking for an alternative to TypeScript with strong typing capabilities

Analysis of PrivacyNotes

Overall verdict

  • I don't have verified, specific information about PrivacyNotes (privacynotes.app) to make a reliable assessment of its quality, security practices, or features. I cannot confirm details about its encryption methods, privacy policy, company background, or user reviews.

Why this product is good

  • Unable to verify claims about encryption or zero-knowledge architecture without independent confirmation
  • No access to current user reviews, ratings, or reputation data for this specific service
  • Cannot confirm company legitimacy, ownership, or track record
  • Unable to verify uptime, reliability, or actual security audit results
  • No information available on pricing structure or terms of service specifics

Recommended for

  • Before using, research independently via security audit reports if available
  • Check for third-party security reviews or penetration testing results
  • Verify the company's privacy policy and data handling practices directly on their site
  • Look for user reviews on independent platforms rather than relying on marketing claims
  • Consider established, well-audited alternatives if handling highly sensitive information

ReasonML videos

ReasonML for Skeptics || Eric Schaefer

More videos:

  • Review - Ken Wheeler - ReasonML is Serious Business
  • Review - Gage Peterson - Why your ReasonML Evangelism isn't working | ReasonConf 2019

PrivacyNotes videos

No PrivacyNotes videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to ReasonML and PrivacyNotes)
Personal Finance
100 100%
0% 0
Task Management
0 0%
100% 100
Financial Planner
100 100%
0% 0
Notes
0 0%
100% 100

Questions & Answers

As answered by people managing ReasonML and PrivacyNotes.

Who are some of the biggest customers of your product?

PrivacyNotes's answer:

Honestly? We have no idea, and that is the entire point. Signup is anonymous (a recovery phrase or Google, no email or personal details), the app ships zero analytics and zero trackers, and zero-knowledge encryption means we cannot see who you are or what you store. We could not name a single customer if we tried. A privacy product that tracked its users closely enough to brag about them would be missing the plot.

What makes your product unique?

PrivacyNotes's answer:

PrivacyNotes is the only zero-knowledge encrypted workspace that keeps notes, tasks, journals, files, and a password vault behind one set of on-device keys. Most privacy apps do one of those well and rent it to you monthly. We do all five, encrypt everything with XChaCha20-Poly1305 before it leaves your device, and charge once instead of forever. The encryption core is open core, published so the claims can be verified rather than trusted.

Why should a person choose your product over its competitors?

PrivacyNotes's answer:

Three reasons:

  • One app, not four subscriptions. Standard Notes, Day One, and Lunatask each rent you a slice (notes, journaling, tasks). PrivacyNotes covers all of them plus files and a vault, for a fair one-time fee.
  • Real zero-knowledge. Your keys come from a recovery phrase that never touches our servers, so we cannot read your notes, your filenames, or your metadata. Some encrypted apps leave note or task metadata in the clear; we do not.
  • Verifiable, not just trusted. The crypto and schema are open core and published for review, and there is no ad, tracker, or analytics anywhere in the app.

How would you describe the primary audience of your product?

PrivacyNotes's answer:

Privacy-conscious individuals and independent professionals who handle information they would not want a vendor reading: lawyers, journalists, healthcare and mental-health practitioners, developers, security specialists, researchers, and founders. It also fits anyone who simply wants one private home for their notes, tasks, journaling, and wellness tracking instead of spreading them across surveillance-funded apps.

Which are the primary technologies used for building your product?

PrivacyNotes's answer:

React, TypeScript, Vite and Tailwind CSS.

What's the story behind your product?

PrivacyNotes's answer:

PrivacyNotes started from a simple frustration: staying organized meant scattering your life across half a dozen apps, most of which could read everything you typed and billed you monthly for the privilege. We wanted one place for notes, tasks, journals, files, and passwords, encrypted so thoroughly that the people running the servers could not read a word of it, and paid for once rather than forever. So we built the encryption first, made the keys live only on your device, and published the crypto as open core so the promise could be checked, not just believed. Everything else grew from one rule: your data is yours, and no one else's to mine.

User comments

Share your experience with using ReasonML and PrivacyNotes. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare ReasonML and PrivacyNotes

ReasonML Reviews

We have no reviews of ReasonML yet.
Be the first one to post

PrivacyNotes Reviews

  1. FossFox
    Feature rich

    The best thing about this: No subscription model, it's a one-time fee for a lifetime license. But you can start for free with the generous freemium model. I only needed to upgrade to pro because I wanted to use the app on my phone, laptop and desktop. Highly recommended! Btw, it's a perfect markdown editor as well, not sure why they don't emphasize this more.

Social recommendations and mentions

Based on our record, ReasonML seems to be more popular. It has been mentiond 41 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ReasonML mentions (41)

  • Gleam is my new obsession
    Reason (https://reasonml.github.io/) is the JS like syntax for OCaml. - Source: Hacker News / 10 months ago
  • A 10x Faster TypeScript
    OCaml and Haskell already have that nice type system (and even more nice). If OCaml's syntax bothers you, there is Reason [1] which is a different frontend to the same compiler suite. Also in this space is Gleam [2] which targets Erlang / OTP, if high concurrency and fault tolerance is your cup of tea. [1]: https://reasonml.github.io/ [2]: https://gleam.run/. - Source: Hacker News / over 1 year ago
  • Ask HN: What less-popular systems programming language are you using?
    > The syntax is also not very friendly IMO. Very true. There's an alternate syntax for OCaml called "ReasonML" that looks much more, uh, reasonable: https://reasonml.github.io/. - Source: Hacker News / over 1 year ago
  • An Ode to TypeScript Enums
    When I see this it makes me want to run for ReasonML/ReScript/Elm/PureScript. Sum types (without payloads on the instances they are effectively enums) should not require a evening filling ceremonial dance event to define. https://reasonml.github.io/ https://rescript-lang.org/ https://elm-lang.org/ https://www.purescript.org/ (any I forgot?) It's nice that TS is a strict super set of JS... But that's about the only... - Source: Hacker News / over 1 year ago
  • How Jane Street accidentally built a better build system for OCaml
    Https://ocaml.org/docs/toplevel-introduction#loading-libraries-in-utop https://reasonml.github.io/ looks cool, OCaml with javascript. - Source: Hacker News / over 1 year ago
View more

PrivacyNotes mentions (0)

We have not tracked any mentions of PrivacyNotes yet. Tracking of PrivacyNotes recommendations started around Jun 2026.

What are some alternatives?

When comparing ReasonML and PrivacyNotes, you can also consider the following products

Mint - Free personal finance software to assist you to manage your money, financial planning, and budget planning tools. Achieve your financial goals with Mint.

Standard Notes - A safe place for your notes, thoughts, and life's work

Elm - A type inferred, functional reactive language that compiles to HTML, CSS, and JavaScript

Apple Notes - Apple Notes functions as a service for making short text notes.

Haste - Decreases ping in video games.

Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.