Most running apps rank you against strangers. SoomRun has no leaderboard: your one rival is the you from yesterday. It replays a past run at the exact pace you ran it and shows a single number, how many metres you're ahead or behind. One tap on the wrist when you pull ahead, two when you get caught. Import old runs from Apple Health on day one. Apple Watch works alone and merges later. No feed, no followers, no analytics SDK. Free; SOOM+ adds a goal-pace ghost.