RUNA vs PBSplits

No watch. No chest strap. Just your iPhone camera. RUNA turns your iPhone into a smart treadmill companion. Simply prop your phone up, point the camera at yourself, and let our AI do the rest — measuring your heart rate in real time without any wearable device. How It Works Place your iPhone on the treadmill or nearby. RUNA's camera-based AI detects your heart rate while you run — completely hands-free, completely device-free. Set Goals, Crush Them Set your target distance, time, or pace. RUNA tracks your progress and keeps you on course every session. Know Your Zone See exactly which pace and heart rate zone you're in during your run. Push harder or pull back — train smarter with real-time zone insights. Look Back, Level Up Every run is saved automatically. Review your history, spot trends, and watch yourself improve over time. Your Data Stays Yours All data is processed and stored entirely on your device. Nothing leaves your phone — ever. No cloud uploads, no third-party sharing, no exceptions. Stop strapping on extra gear. Start running with just your iPhone.

PBSplits is a free app that finds your fastest split at every standard distance across your run history. Most personal-best tools only know your finish times. If you've never raced a 5K, they think you've never done one. PBSplits looks inside each run and finds the fastest continuous window for every distance on the ladder, so the best 5K you ever ran shows up even if it was the middle 5K of a 12 K training jog. Three tabs, and it opens on the first. Runs is every run in your Health data — pull to refresh, tap any one to open it, even the ones that never hit a standard distance. Trends plots a distance over time, as pace or as finish time, with a year-over-year view to lay this season against the last; it also holds the Power Curve, your season's distance against last year's, and your weekly run streak. Me is your season and all-time totals and the record book: the ladder from 400 m to 100 K, grouped Short / Road / Ultra. Tap any effort and you get the whole run — the route on a map with the record-winning segment highlighted, a mile-by-mile splits table, and pace and elevation charts. Tap a split and its window lights up on the map and across the charts, so you can see exactly where you found the time. Season and all-time crowns mark the efforts that took a podium. Great for: • Runners who want PBs from training, not just races • Tracking progress over a season or a year • Finding the fastest you've ever covered a 5 K, 10 K, half, or marathon • Comparing efforts across short, road, and ultra distances • Anyone whose watch knows more than they do What you get: • Best-effort engine that finds your fastest continuous split at every distance, not whole-run averages • Full distance ladder from 400 m to 100 K, grouped Short / Road / Ultra • Every run, browsable: pull to refresh, and open runs that never hit a standard distance • Trend charts, progression and year-over-year, by pace or by time, pinch to zoom either axis • Mile-by-mile splits: tap a split to highlight its window on the map and the charts • Your watch's own laps and workout intervals, each in their own table • Power Curve: your best pace at every duration, from 30 seconds to your longest run, switchable to heart rate, for a season or your own date range • Weekly run streak, with every run day's distance on a heatmap • Export any run as a GPX or FIT file • Map view per effort, with the winning segment highlighted on the route • Season and all-time crowns on podium efforts • Share cards for a new PB, a podium, or your whole record book • Pick your pace units: min/km or min/mi • PBSplits reads your workouts from Apple Health and never writes to it • Your run data stays on your device Free to download — no subscription, no account.