Software Alternatives & Reviews

KaiOS VS GrapheneOS

Compare KaiOS VS GrapheneOS and see what are their differences

KaiOS is a light operating system for smart feature phones like the JioPhone and Nokia 8110.

GrapheneOS is an open source privacy and security focused mobile OS with Android app compatibility.
KaiOS Landing Page
KaiOS Landing Page
GrapheneOS Landing Page
GrapheneOS Landing Page

KaiOS details

Mobile OS Mobile SDK Development

GrapheneOS details

Mobile OS Mobile SDK Development

KaiOS videos

How KaiOS is catching up with Android.

More videos:

  • - KaiOS is the future? - Nokia 2720 Full Review || Yes Hello 911? Tech
  • - Alcatel SmartFlip Flip Phone Review: KaiOS in the USA?

GrapheneOS videos

GrapheneOS Review: Your BEST Secure & Private Mobile OS!

More videos:

  • - THIS is the most private and secure phone on the planet - GrapheneOS review and how to install
  • - First GrapheneOS Review

Category Popularity

0-100% (relative to KaiOS and GrapheneOS)


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

KaiOS Reviews

Open Source Mobile OS Alternatives To Android
Not your fault really. KaiOS was only released in 2017, and yet it is powering a huge number of mobile phones in just under two years.

GrapheneOS Reviews

Open Source Mobile OS Alternatives To Android
GrapheneOS in an open source privacy-focused mobile operating system. It is focused on the research and development of privacy and security technology.

Social recommendations and mentions

Based on our record, GrapheneOS seems to be a lot more popular than KaiOS. While we know about 152 links to GrapheneOS, we've tracked only 1 mention of KaiOS. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.

KaiOS mentions (1)

  • LetsEncrypt Cross-signing Expiry
    LetsEncrypt ISRG Root X1's IdenTrust DST Root CA X3 cross-signing has come to an end. This means that any device/browser (including KaiOS devices) which doesn't yet trust the ISRG Root X1 will no longer trust any site with a LetsEncrypt certificate (which, by the way, includes!). - Source: Reddit / 4 months ago

GrapheneOS mentions (152)

  • Google Meet on deGoogled phone - is it possible?
    GrapheneOS and potentially CalyxOS have support for Google Meet while also being more private than stock. - Source: Reddit / 1 day ago
  • On JRE#1768 , Robert Epstein asks viewers to go to an article where he directly contradicts himself.
    Dude come on. By "degoogling" his OS he means that he is using open source OS like GrapheneOS. IIRC there are several such security-oriented OS. They are sort of compatible with Android apps, but miss all the Google apps and service shit. - Source: Reddit / 2 days ago
  • Google Is Forcing Me to Dump a Perfectly Good Phone
    GrapheneOS ( also still supports the Pixel 3, albeit in legacy/sunset phase now. - Source: Hacker News / 3 days ago
  • What is the best mobile device for privacy?
    Why avoid Pixels? They're the only devices that support CalyxOS and GrapheneOS. There are no other devices that will allow for the same level of privacy and security. - Source: Reddit / 6 days ago
  • Android OS / ROM
    A Google Pixel with GrapheneOS is the best option to have a secure, private and usable phone. You can also use multiple secondary users. Each of them has separate encryption keys, can be separately logged in and out. Also they can be separately and unrecoverably deleted. - Source: Reddit / 7 days ago
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What are some alternatives?

When comparing KaiOS and GrapheneOS, you can also consider the following products

LineageOS - Operating system for smartphones and tablet computers, based on the Android

CopperheadOS - Secure Android built for encrypted and secure phones by a privacy focused company. Available as security-centric and privacy focused Google-free Android for the latest devices. Fully integrated with the latest IDS and MDM enterprise technologies.

CalyxOS - Privacy-focused operating system for smartphones based on Android and microG

Ubuntu Touch - Read more about Ubuntu Touch. Our free and open source mobile OS is made and maintained by UBports! We care about your freedom and privacy.

Android - 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.

Android Nougat - Android Nougat is the seventh iteration released by Google for the Android Operating System.

User reviews

Share your experience with using KaiOS and GrapheneOS. For example, how are they different and which one is better?

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