My test
Work well, but for Strava I think that for more accuracy Google map is better than the default Apple map, you should give the possibility of changing the default map app on the Blacklyf App
Not enough ratings yet to assess Blacklyf.
Blacklyf appears legitimate, with a few gaps. AppsHunter Legitimacy Score for Blacklyf is 65/100.
Based on 65 of 100 points across 7 verification signals from App Store and developer data.