URun vs SumCha

URun turns your wrist into a clear, glanceable running dashboard: big live numbers, color-coded pace and heart rate, and finish-time predictions from 5K to the marathon. Four ways to run • Outdoor: GPS route, with distance and pace calculated from GPS • Treadmill: indoor runs, no GPS needed • Intervals: custom run and recovery segments by distance or time, sets, target pace range and run:rest ratio. Works outdoors or on the treadmill, with voice and haptic cues for every set and a 10-second countdown • Trail: full route and elevation gain, with barometric altitude Read it at a glance • Current pace, heart rate, distance, cadence, average pace and time on one screen, with numbers that fill the card so you can read them mid-stride • Pace changes color against your target: green on target, orange a little slow, red too slow • Heart rate is colored by zone, with Z1–Z5 and zone names Before you head out • The home screen shows your city, weather, humidity and PM2.5, plus a quick call on whether it's a good time to run outside • Air quality is rated by your local standard: US AQI, European EAQI or China HJ 633 • A pre-run check confirms Health, route and location permissions and a GPS fix, so no part of your route goes missing • Backgrounds change with the time of day Finish-time predictions • Predictions step up as you go: 5K → 10K → half marathon → marathon → 100K • Set a goal time to see the pace you need and whether you're ahead or behind • Set a distance goal and get a tap, a voice alert and confetti when you reach it Running form • A second page shows power, stride length, vertical oscillation, ground contact time, elevation gain and calories Training and alerts • Spoken 3-2-1 countdown; auto and manual laps, with a tap and a voice announcement every lap • Optional auto-pause and cadence metronome • A reminder if you forget to end your workout • If the app gets interrupted, your workout picks up right where it left off • Confirm before saving, or discard the run After the run • A summary with your route colored by pace and your key numbers Miles or kilometers, in your language • Miles, min/mi pace, °F, feet and mph, or kilometers and °C. Set automatically for your region, switchable anytime • Fully localized, with voice prompts in English, Chinese (Simplified and Traditional), Japanese, Korean, German, French and Spanish • Layouts fit every watch size from 40 to 49 mm Built on Apple Health • Workouts, heart rate and routes are saved to Apple Health in the standard format, so they show up in the Fitness app and in other health apps you allow • Export any run as GPX • No account. Your data stays on your devices and in Apple Health. We don't collect or upload it On iPhone • Dashboard editor: customize every field. Target pace, cadence, heart-rate zones, voice and auto-lap settings sync to your watch instantly • History: weekly and monthly totals, personal records, achievements and all your routes. Every workout gets splits, pace and heart-rate charts, and post-run analysis Weather data provided by Apple Weather. Air quality data provided by Open-Meteo. Requires Apple Watch with watchOS 26 or later.

Pick, tap, run. A simple, clean interval running app. · Choose a program like 2 min run / 1 min walk and just tap start · The running screen puts the current interval and time left up front, big and clear · Voice, haptics, and a 3-2-1 countdown tell you when intervals change · Build your own: warm-up, run, walk, repeats, cool-down · When a set ends you keep going as a free run, or add one more set · Start, pause, and end from the Lock Screen, Dynamic Island, widgets, and Control Center · Auto-pause when you stop, resume when you run · Distance, pace, and calories (uphill included), weekly/monthly/yearly summaries, and your route on a map · Sync your history across your devices through your own iCloud (the developer can't see it) Free to use. Ads appear only on the History tab and after a run summary — never on the running screen. One purchase removes all ads.