
Signal
Telegram
Element.io
Session Messaging App
Briar
Threema
Tox
π SimpleX - the most private and secure chat - now with double ratchet E2E encryption!

NovoPsych
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures by secure link and review scored results, severity bands and reports.

Which is more popular?
Based on our record, SimpleX chat seems to be more popular. It has been mentioned 75 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | simplex.chat | clientforms.app |
| Pricing | ||
| Company | 2019 | β |
| Listed in |
In their own words, as submitted to SaaSHub.


SimpleX is a new platform for distributed Internet applications where the privacy of the messages and the network matters most. The current version is stable, robust and can be used from the terminal (command line) on all major desktop platforms (Linux/Mac/Win) and on Android phones in Termux!...
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures such as the PHQ-9, GAD-7 and DASS-21 by secure link and get scored results, severity bands and reports ready to review. The catalogue also includes DSM-5 ADHD assessments and autism screening tools....
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
SimpleX Chat is highly recommended for privacy-conscious individuals, activists, journalists, or anyone who handles sensitive information and values secure communication. It is also a good option for those interested in trying out decentralized, open-source communication platforms.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0β100% relative to the other.


As answered by people managing SimpleX chat and ClientForms.app.
ClientForms.app's answer:
Frontend: Next.js 15 (React 19), Tailwind CSS Backend: Supabase (PostgreSQL, Row-Level Security) Authentication: Clerk Payments: Stripe Hosting: Vercel (Sydney region) Database hosting: Supabase (Australian data residency)
ClientForms.app's answer:
Psychologists who assess ADHD and autism. Typically private practice, solo or small group (1-5 clinicians), currently using paper forms and spending hours on admin per assessment. They want something that works and is secure.
ClientForms.app's answer:
Neurodivergent-first design. Most digital forms just replicate paper online. ClientForms is built specifically for ADHD and autism patients - progress bars with time remaining (helps with time blindness), softer colours instead of harsh white, sticky headers so you always know where you are. The forms are designed to reduce anxiety and improve completion rates.
ClientForms.app's answer:
Most clinical software treats patients as an afterthought. ClientForms is designed specifically for neurodivergent users who are filling out the forms, progress indicators, time estimates, calmer colours, predictable layouts. One link, no signup required, works on any device. Patients just open and complete.
Share your experience with using SimpleX chat and ClientForms.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


One of the recent secure messaging apps that has entered the scene is SimpleX Chat. It claims to be the first messaging app that has no user IDs. This private messaging app uses its proprietary platform called...
We have no reviews of ClientForms.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Anyway, copying and reproducing is a great way to learn. It also train the mind to decompose every applications in small pieces. The same could have been done for Briar, SimpleX or Telegram applications, all of them are open-source and... - Source: dev.to / 5 months ago
Https://simplex.chat/ It already has quite big communities https://simplex.chat/directory/. - Source: Hacker News / 9 months ago
I like the way SimpleXChat works. Good luck getting anyone to switch to it though. https://simplex.chat/. - Source: Hacker News / 12 months ago
Tracking ClientForms.app since Dec 2025.
When comparing SimpleX chat and ClientForms.app, you can also consider the following products.

Fast, simple & secure messaging. Privacy that fits in your pocket.
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NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
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Telegram is a messaging app with a focus on speed and security. Itβs superfast, simple and free.
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Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Compare Element.io to SimpleX chat or ClientForms.app:

Session is a private messenger that aims to remove any chance of metadata collection by routing all messages through an onion routing network.
Compare Session Messaging App to SimpleX chat or ClientForms.app:
