Tempo Video Editor by Fly Labs Inc. Tempo is the ultimate app for slowmo & timelapse. Get creative with the tempo of your videos by slowing them down and speeding them up while they play in real time. Explore the dimension of time in your videos with Tempo, the latest app for video creativity by Fly Labs! Pro tip: add music to your videos in Tempo, and your music will play nice and steady even while your videos speed up and slow down underneath the music. The effect is incredible.