The add on provides swipe functionality that I missed from chromium browsers even supports extra gestures such as combinations. Thanks to developers. In order to use this extension on mobile, you have to use Firefox Nightly (for now). You can find instructions on reddit that would guide you through how to install them via add on collections method.

I can't stand Android's native gestures when using a browser, so after finding this addon, I was determined to figure out how to install it on my phone. It took a few hours and more effort than I expected, but it was worth it. I now have a forward gesture, and so much more. The only drawback is having to use Nightly, but that's not the developer's fault. I'm just grateful for the functionality I now have.

安卓完美支持

Excellent Addon, works great on mobile. Switching tabs stoped working sense the help update weach is a real shame. Now I use it for closing and opening tabs.

It`s nice but its icon doesn`t appear on my firefox browser. So please fix it

nightlyにて使用中。
ジェスチャーが使えないとfirefox使っている意味ないから使えて良かった。
ところで、次のタブ前のタブが使えなくなってました。
修正は可能ですか？

Works great in Firefox Nightly on Android. Thank you for building it.

Honestly this add on makes the browser so much more user friendly, really improved the experience a lot.
hoping to see this become available in the new version of Firefox daylight soon

非常好的addon，请求适配最新版火狐。Very good addon, invoicing and distribution latest version firefox.

So this is for android but "Not available on Firefox for Android." I am confused.

最新のfirefoxへの対応ありがとうございます！これでchromeからfirefoxに戻ってこれる！

Its a really nice extension. There is one small issue I noticed. If I do Next Tab gesture in the last tab, it cycles to the first tab. But the same is not possible for Prev Tab gesture when on the first tab.

Indispensable. I love being able to use gestures to switch and close tabs on mobile and hate using other browsers now!

Please add duplicate current tab.
Edit: nice, this script works.
Edit2: unfortunately the add-on doesn't work on my Windows tablet.

Great add-on! Though U-R and U-L for next and previous tabs look more intuitive for me.