Lactate Express vs Virtual Backyard Ultra

Lactate Express brings the lactate step-test to iPad, Mac, and iPhone — built for performance diagnosticians and serious endurance athletes. Capture every step-test precisely, compute thresholds with scientifically recognized models, and turn them into training zones you can actually apply. No more error-prone spreadsheets and manual entry. CAPTURE — fast and error-free • Step-test one step at a time: load (watts or km/h), lactate, heart rate, and Borg per step • Automatic readings over Bluetooth: SensCore lactate meters and Polar heart-rate sensors • Clear phases: rest, examination, recovery — with the current step clearly marked • Large input fields and one-tap entry, even under time pressure during a test ANALYZE — scientifically grounded • Six threshold models: Mader (4.0 mmol/l), Dickhuth, LT1, dMax, dMaxMod, and user-defined fixed values • Automatic curve fitting with coefficients and R² — the math stays transparent • Training zones such as GA1, GA2, and EB at a glance • Publication-grade charts REPORT — professional • Branded PDF reports with header and footer, charts, tables, and zones • Share via the native iOS and macOS share sheet COMPARE & TRACK — over time • Compare Tests: put any two step-tests side by side (Mac and iPad) to see exactly what changed • Home dashboard with threshold trends and deltas — an athlete's form at a glance • Roster overview to manage many athletes from one place (Team/Pro) • Cohort percentiles: see where an athlete ranks within the group WHO IT'S FOR • Diagnosticians: fast capture, athlete management, professional reports • Athletes: clear zones instead of jargon, an honest performance snapshot PLATFORMS Native SwiftUI — optimized for iPad and Mac, compact on iPhone. SUBSCRIPTIONS Lactate Express offers auto-renewable subscriptions with monthly and yearly terms. The subscription title, duration and price are shown in the app before purchase. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your Apple Account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Privacy Policy: https://www.lactate-express.de/lactate-express-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Lactate Express — train smarter, not harder.

Virtual Backyard Ultra turns the last-one-standing race format into something you can run solo, anywhere. The rules are simple. Every hour, on the hour, you run a "yard" — a set loop. Finish inside the hour and you earn a rest until the next one begins. Miss the cutoff and you're out. The last runner standing wins, so the only goal is one more yard. Virtual Backyard Ultra is your timekeeper and distance tracker for every yard: • Corral clock — a clear countdown to the top of the hour, with audio, haptic, and spoken cues at 3-2-1 and the starting bell. • GPS distance — track how far you cover each yard, with live distance-to-go and turnaround prompts on out-and-back courses. • Your format — set the yard distance, interval, and course type. The classic 4.167 mi per hour (24 yards = 100 miles) is one tap away. • Live Activity & Dynamic Island — keep the corral clock on your lock screen and in the Dynamic Island while you run. • Apple Watch — the corral clock on your wrist: the yard you're on, the countdown to the next bell, and your distance. It taps you at the bell, when you finish, and if you miss a corral. • Race resume — if the app goes down mid-race, from a crash or a force-quit, reopening it puts you straight back in with the clock where it should be. • History & personal best — every run is logged, with your longest streak front and center. • Export & share — save a finished run to Apple Health as a running workout, one segment per yard with your route, or export a .fit or .gpx file. Share a result card when you're done. • Screen-off friendly — distance keeps counting in your pocket, and the bell still rings. No account. No sign-up. Just you, the clock, and one more yard. Free to download.