This review is for the PC version:
There have been many addons that have attempted to do something similar to what this addon does, but none do it quite so reliably and easily. This addon is very simple & intuitive to use, and I have very quickly become reliant on it. It does almost everything I need it to do: drag tabs between tab groups, allows duplicates in case I want a certain tab in more than one group, group locking so I don't accidentally mess my sorting up, group starring to make it easier to find at the top of the tab group list, naming of tab groups so I know what I've put where, the option to share tab groups as a webpage to quickly get lists of links to friends and relatives, the list goes on and on. The only thing it doesn't do, and the only reason this review is 4 stars instead of 5, is because there doesn't seem to be a way to manually sort the tab groups themselves. Adding a new tab group changes the order and that's annoying to me, but not nearly enough to stop using it. If this feature is incorporated into the addon, I'll change it to 5. Thank you so much for this wonderful addon! Excellent work! ♥

This extension just took 100 open tabs and saved only one! 😠 Those were important. I like OneTab for PC, but this mobile extension makes you guys pure trash.

First time I tried to use it, it closed all my tabs (nearly a hundred that I'd kept open across crashes, reboots and FF updates for months) and gave me a list of only the most recent two. I think this is probably the first time in my life I really feel like I could murder someone. I'm sure it will pass but it won't stop me hoping the developer gets hit by a bus.

One of my favorite apps. Would be ideal if one can move more than one tab in the list at a time to a new and/or existing group.

Does not respect hidden tabs, therefore cannot be used with Simple Tab Groups or other tab managers. Completely useless in it's current form.

watsanaaksornkhong0123@gmail.com

I've used this extension religiously for years on my desktop and I love it. However, I just installed it on my Android phone and upon using it, it deleted ALL of my tabs and didn't even save them!! I had over 100 tabs open and now they are gone! I am EXTREMELY disappointed.

Simply awesome and easy to use. I wish I can auto-backup to google drive though. That would elevate this plugin to 6 stars!

Love it and highly recommend. A true game changer.

Works well on both Firefox and Chrome, and I haven't been bitten by the issues that other reviewers mentioned. I'm taking one star back because import/export drops all tab group metadata (name, star, lock), which strikes me as a strange and inexcusable omission.

Used OneTab for desktop Firefox forever, I installed it to use on my Android phone and it deleted ALL of my tabs which are now unrecoverable!!! DO NOT USE OR YOU WILL LOSE YOUR DATA!

I rarely rate add-ons, as so many are really not much cop. This add-on, for me, is one of those rare ones that ticks my boxes - it's clear what it does, it's simple to use, and I find it genuinely useful!

If you are one of those web users who sometimes has many Firefox tabs open, this really does simplify keeping a handle on them. Recommended, unequivocally!