There's no app, just a website TRONITY | Your Car. Your Data. - unfortunately it's a paid service but you get a couple of weeks free (and more if you use a referral code - my trial expired so I can't provide one). It links to your Renault account to get the car data.
Everything you need to know is in this thread. There’s now a beta version for iOS as well. I use a Konnwei WiFi OBD2 dongle with CanZE on iOS, it’s working well so far.
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