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ProtonMail VS Cipher by Sysapp.dev

Compare ProtonMail VS Cipher by Sysapp.dev and see what are their differences

ProtonMail

Secure email with absolutely no compromises. Get your free encrypted email account today.

Rating
5.0 · 2 reviews
Pricing
Freemium Free trial €5 / Monthly (user - 5 GB)
Alternatives Is it good?
Cipher by Sysapp.dev

A journal that finds the pattern you were too close to notice, what's driving it, and what to try next. No tags, no links, no folders.

Rating
0 reviews
Pricing
Free
Alternatives Is it good?
SpinUp
Business email without the bloat. sponsored
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.

Which is more popular?

Based on our record, ProtonMail seems to be more popular. It has been mentioned 414 times since March 2021.

social mentions
414 vs 0
Email popularity
100% vs 0%
alternatives listed
240+ vs 8

Base details

Website, pricing, platforms and company facts side by side.

ProtonMail
Cipher by Sysapp.dev
Website protonmail.com cipher.sysapp.dev
Pricing
Freemium Free trial €5 / Monthly (user - 5 GB) Official pricing
Free
Platforms —
Web
Company Startup from Switzerland · 50 - 99 employees Startup from Australia · 1 - 9 employees · 2025
Listed in
Email Email Service Email Service Provider Email Clients Hosted Email Secure Email +3
Writing Tools Journaling Note Taking Self-Improvement AI +2

About ProtonMail and Cipher by Sysapp.dev

In their own words, as submitted to SaaSHub.

ProtonMail
Cipher by Sysapp.dev

No description of ProtonMail yet.

Cipher is a journal for people who write things down and never get anything back from it. You write however you like, or speak it. No tags, no folders, no linking. Over days and weeks, Cipher groups related entries and comes back with three things: The pattern you were too close to notice What's...

Read more about Cipher by Sysapp.dev

Features and specs

What each product offers, as listed by its team.

ProtonMail 5 features
Cipher by Sysapp.dev 10 features
  • End-to-End Encryption
    ProtonMail uses robust end-to-end encryption, ensuring that only the sender and the recipient can read the emails. This enhances the security and privacy of your communications.
  • Zero Access to User Data
    ProtonMail does not have access to user data or emails. This means that even ProtonMail cannot read your emails, providing an additional layer of privacy.
  • Swiss Privacy Laws
    Based in Switzerland, ProtonMail benefits from stringent Swiss privacy laws, which are some of the strongest in the world. This offers users greater legal protection against mass surveillance.
  • Open Source
    ProtonMail's encryption algorithms are open source, which means their code can be reviewed and audited by anyone, promoting transparency and trust.
  • User-Friendly Interface
    ProtonMail offers an intuitive and clean user interface, making it easy for users to manage their emails efficiently.

Possible disadvantages

  • Limited Free Storage
    The free version of ProtonMail offers only 500 MB of storage, which might be insufficient for users who need to store a large number of emails.
  • Paid Plans
    Advanced features and additional storage require a paid subscription, which may be a hassle for users looking for a completely free service.
  • Search Limitations
    Due to end-to-end encryption, the search functionality in ProtonMail is limited compared to other email services, as the search can only be performed on email subjects, not the content.
  • Compatibility Issues
    ProtonMail's encryption might not be fully compatible with other email services, potentially causing issues with sending and receiving encrypted messages.
  • Learning Curve
    New users who are unfamiliar with encryption concepts might find it slightly challenging to understand and use all of ProtonMail’s security features effectively.
  • Pattern insights
    The pattern you were too close to notice, what's likely driving it, and one thing to try
  • Source citations
    Ask any insight where it came from and it quotes the lines you wrote
  • No tagging or linking
    Write however you like. Related entries are grouped for you
  • Voice entries
    Dictate instead of typing. Long recordings are split as you talk
  • Guided start
    Four entry shapes to write against: a moment, a decision, a feeling, a pattern
  • Search by meaning
    Find an entry by what it was about, not the exact words you used
  • Goals
    Insights are weighed against what you're working toward
  • Pattern nudges
    A notification when a pattern surfaces, so you don't have to keep checking
  • Works everywhere
    Any browser, and installs to your phone's home screen
  • Memory
    Entries are kept permanently. Insights fade after 90 days, like working memory

Analysis

An editorial look at what each product does well and who it suits.

ProtonMail
Cipher by Sysapp.dev

Overall verdict

  • ProtonMail is generally considered to be a good email service, especially for users who prioritize privacy and security. Its user-friendly interface and strong encryption make it a reliable choice for personal and professional communication.

Why this product is good

  • ProtonMail is known for its strong emphasis on privacy and security. It offers end-to-end encryption, ensuring that your emails are secure and can only be read by the intended recipient. Additionally, the service is based in Switzerland, which has strong privacy laws. ProtonMail is also open-source, allowing for transparency and community trust in its security measures.

Recommended for

  • Individuals who prioritize email privacy and security
  • Journalists, activists, and professionals handling sensitive information
  • Users looking for an ad-free email experience
  • Anyone seeking a secure communication tool with a simple, intuitive interface

No analysis of Cipher by Sysapp.dev yet.

Videos

Walkthroughs and reviews on video.

ProtonMail 3 videos + Add
Cipher by Sysapp.dev 1 video + Add

ProtonMail Review - Good or Not?

More videos

  • - ProtonMail Review
  • - Top 4 Email Services BETTER than Protonmail!

Explore Cipher, a personal knowledge management platform engineered to refine self-understanding and enhance goal achievement.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
ProtonMail
Cipher by Sysapp.dev
100% 100%
Email
0% 0%
0% 0%
Journaling
100% 100%
100% 100%
Email Clients
0% 0%
0% 0%
Note Taking
100% 100%

Questions & Answers

As answered by people managing ProtonMail and Cipher by Sysapp.dev.

Who are some of the biggest customers of your product?

Cipher by Sysapp.dev's answer:

Cipher is for individuals and it's in beta.

Which are the primary technologies used for building your product?

Cipher by Sysapp.dev's answer:

Go microservices, SvelteKit (the app, installable as a PWA), Next.js (the website), PostgreSQL, Qdrant for search by meaning, Redis, and AWS. Insights are generated through the OpenAI and Google Gemini APIs.

What makes your product unique?

Cipher by Sysapp.dev's answer:

You don't organise anything, and you don't have to ask it anything. You just write, and over time Cipher groups related entries and comes back with a pattern you were too close to notice, what's likely driving it, and one thing to try. Every insight can be traced: ask where it came from and it quotes the lines you wrote.

Why should a person choose your product over its competitors?

Cipher by Sysapp.dev's answer:

If you want a beautiful diary, there are good ones. If you want to chat with an AI about your day, there are good ones too. Cipher is for people who want their writing to add up to something, without tagging it, linking it, or asking the right question. And because every insight shows its sources, you can check it rather than take it on trust.

How would you describe the primary audience of your product?

Cipher by Sysapp.dev's answer:

People who already write things down, or want to: journallers, people who think in notes, people working through decisions, and people reflecting on how they feel. It suits anyone who wants to understand their own patterns. It's a reflection tool, not therapy, and it doesn't diagnose anything.

What's the story behind your product?

Cipher by Sysapp.dev's answer:

Regular journals felt like shouting into the void, and note apps were either too structured (Obsidian) or not structured enough (Apple Notes). I wanted something in between: write however I like, and have the patterns I couldn't see myself come back to me. You can't surprise yourself. Cipher is my attempt to work around that bug.

The longer version: https://1x-eng.github.io/blog/posts/cipher/

User comments

Share your experience with using ProtonMail and Cipher by Sysapp.dev. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

ProtonMail 5.0 · 2 reviews
Cipher by Sysapp.dev no reviews yet
  • Excellent mail service.
    SaaSHub review
    · Sep 2026

    Great company that is constantly improving their products in meaningful ways.

  • 5 Of The Best Alternatives To Proton Mail
    www.slashgear.com · Jan 2025

    Email providers like Gmail and Yahoo offer lots of great features for free. However, all those freebies come at a cost, as these popular email services track your activity and target you with ads. In contrast,...

  • The Top 4 ProtonMail Alternatives
    blog.superhuman.com · Aug 2024

    While ProtonMail is generally received in a positive light, it isn’t without its flaws. It’s been subjected to DDoS attacks that have made its services inaccessible to some users. ProtonMail is also not well suited to...

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We have no reviews of Cipher by Sysapp.dev yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

ProtonMail 414 mentions
Cipher by Sysapp.dev 0 mentions
  • Email username
    You might want to consider getting a domain name of your own and then get email hosting which will allow you to set up your email in the way you want. If you don't want to have to manage and pay for domain name and email hosting, you may... Source: almost 3 years ago
  • How to Force Current Session Logout - Answered
    I closed all Proton Mail tabs and navigated to protonmail.com and a cleared out login area was shown. Without checking the "keep me logged in", I entered my credentials and was prompted for my 2FA info. I entered that and it worked. Source: almost 3 years ago
  • help
    Can I add my gmail account to my proton mail account so I can send emails and choose betwen my gmail.com email or my protonmail.com email account? Im not talking about the easy switch feature btw. Source: about 3 years ago

View more

Tracking Cipher by Sysapp.dev since Sep 2026.

Alternatives to ProtonMail and Cipher by Sysapp.dev

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