This app is awful, you can ONLY use it with videos from the Apple camera, nothing else. The other thing is that, it is really glitchy, not good. You would be WAY better off with Slo Pro for iPhone. You may notice I gave this one star, if there were lower, believe me I would take it.
Sara516134 about TruSloMo - Share slow motion video to Instagram, WhatsApp, WeChat. Supports 240fps and 120fps video from iPhone 5S, iPhone 6, iPhone 6+