Furious còig
2.0 a-mach à 5 rionnagan (stèidhichte air 1 lèirmheas)
Is e app làrach-lìn a th’ ann am Furiousfive a bheir seachad trèanadh HIIT dhut. No ads, no registration. Tha app aca ach dìreach airson apple (iOS). Have some trackers.
They are using a few trackers like google-analytics and some possible “ads”, though I cannot fully confirm it about the ads. Even without an adblocker I could not see ads, but with the adblocker on I can see some urls being blocked. Also, they are offering an app version of the website only available on the Apple Store that requires a trade-based operating system to access. However one can use the app online.