I've got an android phone so these are android apps:
Duolingo. Learn Spanish, French, German, Italian, Portuguese, Dutch, Irish, Danish, Swedish, and English. Totally fun and 100% free. I've been using this app for about 2 years to teach myself Spanish. I had hoped to be fluent in 2 years but I'm still only 47% fluent more because of me not practicing often enough than anything to do with the app. I'll keep working on it because I really do like this app. https://play.google.com/store/apps/details?id=com.duolingo
Flightradar. This FREE version of the most popular flight-tracking app turns your phone or tablet into an air traffic radar and lets you see airplane traffic around the world in real-time. https://play.google.com/store/apps/details?id=com.flightradar24free
Duolingo. Learn Spanish, French, German, Italian, Portuguese, Dutch, Irish, Danish, Swedish, and English. Totally fun and 100% free. I've been using this app for about 2 years to teach myself Spanish. I had hoped to be fluent in 2 years but I'm still only 47% fluent more because of me not practicing often enough than anything to do with the app. I'll keep working on it because I really do like this app. https://play.google.com/store/apps/details?id=com.duolingo
Flightradar. This FREE version of the most popular flight-tracking app turns your phone or tablet into an air traffic radar and lets you see airplane traffic around the world in real-time. https://play.google.com/store/apps/details?id=com.flightradar24free