
LineageOS
GrapheneOS
Android
Ubuntu Touch
CalyxOS
CopperheadOS
e.foundation /e/
A real Linux distribution on the phone

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, postmarketOS seems to be more popular. It has been mentioned 111 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | postmarketos.org | clientforms.app |
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In their own words, as submitted to SaaSHub.


No description of postmarketOS yet.
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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Pinephone + postmarketOS + Phosh + Firefox: Walkthrough [ #linuxsmartphone ]
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing postmarketOS 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 postmarketOS 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.


Don’t get too excited. PostmarketOS is in very early phases of development, and it is most likely that you won’t be able to use it like a regular smartphone yet. However, you may keep an eye on the postmarketOS...
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.


GrapheneOS is pretty neat, https://postmarketos.org/ is also pretty damn polished out of the box these days. - Source: Hacker News / about 2 months ago
> - I'm itching at the chance to build my own phone operating system, and there must be thousands of others who want to do the same. Maybe look into contributing to existing alternatives like PostmarketOS. https://postmarketos.org/. - Source: Hacker News / 4 months ago
- https://sailfishos.org - https://docs.sailfishos.org/Support/Supported_Devices They have few devices of their own (new one coming out this October) and they officially support many Sony Xperia devices. There are also many community... - Source: Hacker News / 5 months ago
Tracking ClientForms.app since Dec 2025.
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GrapheneOS is an open source privacy and security focused mobile OS with Android app compatibility.
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Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.
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Privacy-focused operating system for smartphones based on Android and microG
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