Track4Facts PRO vs Daily Workout Interval Timer

Track4Facts PRO turns your iPhone into a GPS driving recorder for sprint, distance, lap and sector timing. Record drives, import circuits and compare your results with maps, charts and motion-sensor analysis. Download free and measure 0–60 mph or 0–100 km/h, depending on your unit setting. Unlock advanced features with one purchase. No subscription. Previous purchasers of the paid app retain the Full Version. FREE FEATURES • GPS speedometer and ride recording, including speed, distance, duration, elevation and stops • 0–60 mph or 0–100 km/h sprint timing • iPhone sensor fusion for eligible standard sprints • Background recording, Lock Screen Live Activity and Dynamic Island • Maps, ride summaries and history • One vehicle profile in the Garage • Sprint start/stop via Siri, Shortcuts and the Action button on supported iPhones • Apple Watch remote control and optional heart-rate recording • Import existing Track4Facts backups FULL VERSION — ONE-TIME PURCHASE • Custom sprint ranges from a standstill or rolling start • Sprint comparison across rides and vehicles with overlaid speed curves • Distance timing with splits, finish speed and custom targets • Automatic lap and sector timing with live delta to your best lap • Create circuits by drawing, driving a survey lap or importing GPX and GeoJSON • Edit track points, reverse direction and position start/finish and sector lines • Lap comparison, corner analysis, braking and deceleration traces • Theoretical best lap, lap consistency and Ghost Lap replay • Friction-circle, corner-dynamics and vibration analysis • Interactive 3D route and elevation visualisation • Ride replay and speed, elevation and acceleration charts • GPX, waypoint CSV and motion CSV export • Complete backups, multiple vehicle profiles and external GPS support • Lap Timing start/stop via Siri, Shortcuts and the Action button IMPORT AND EDIT CIRCUITS Import GPX tracks or GeoJSON geometry in .geojson or .json files. Review the course shape, adjust its detail and points, then set timing lines. Import your own recordings or data you are permitted to use, and observe its licence and attribution requirements. SIRI, SHORTCUTS AND ACTION BUTTON Use the same action to start, then stop and save. A start may require unlocking the iPhone and opening the app. Lap Timing requires the Full Version and a prepared course or valid start/finish line. The FAQ explains setup and voice commands. Start recording before driving. GPS + IPHONE SENSORS For eligible standard sprints, sensor fusion combines GPS and motion data to estimate launch, speed progression and GPS delay. Keep your iPhone firmly mounted. Fusion is used only when its checks pass; GPS remains available for comparison. Suitable rides may receive a separate ≈ estimate after recording; estimates do not become confirmed records. New rides store motion data at a nominal 50 Hz. Older rides require sufficient stored data. APPLE WATCH View live data and control Sprint recordings from your wrist. Optional Race Training records heart rate and saves a workout to Apple Health with permission. Including heart rate in backups or waypoint CSV requires separate consent. EXTERNAL GPS Supports Dual XGPS150/XGPS150A, XGPS160 SkyPro and Dragy Lite. Dragy Lite offers 10, 20 or 25 Hz. More samples do not guarantee greater accuracy. RESULTS AND SAFETY Quality labels, FAQs and illustrated help explain checks and limitations. Each ride retains its measurement configuration. GPS and sensor fusion provide estimates, not guaranteed timing accuracy. Track4Facts PRO is not a calibrated measuring instrument. Perform performance tests only on private, closed-off or expressly approved tracks and areas. Secure your phone and never operate it while driving. Observe applicable laws and local safety rules.

High-intensity interval training (HIIT) is a training protocol alternating short periods of intense or explosive anaerobic exercise with brief recovery periods until the point of exhaustion, which thereby relies on "the anaerobic energy releasing system almost maximally." The method involves exercises performed in repeated quick bursts at maximum or near maximal effort with periods of rest or low activity between bouts. The very high level of intensity, the interval duration and number of bouts distinguish it from aerobic (cardiovascular) activity, because the body significantly recruits anaerobic energy systems (although not completely to the exclusion of aerobic pathways). Although there are varying forms of HIIT-style workouts which may involve exercises associated with both cardiovascular activity and also resistance training, HIIT's crucial features of maximal effort, duration, and short rest periods (thereby triggering the anaerobic pathways of energy production) materially differentiate it from being considered a form of cardiovascular exercise. Though there is no universal HIIT session duration, a HIIT workout typically lasts under 30 minutes in total as it uses the anaerobic energy systems which are typically used for short, sharp bursts. The times vary, based on a participant's current fitness level. Traditional HIIT initially had been designed to be no longer than 20 seconds on with no more than 10 seconds off; however, intervals of exercise effort tend to range from 20 to 45 seconds but no longer than 75 seconds, at which point the aerobic system would then kick in. HIIT workouts provide improved athletic capacity and condition as well as improved glucose metabolism. Compared with longer sessions typical of other regimens, HIIT may not be as effective for treating hyperlipidemia and obesity, or improving muscle and bone mass. However, research has shown that HIIT regimens produced significant reductions in the fat mass of the whole-body in young women. Some researchers also note that HIIT requires "an extremely high level of subject motivation" and question whether the general population could safely or practically tolerate the extreme nature of the exercise regimen. TABATA REGIMEN: A version of HIIT was based on a 1996 study by Ritsumeikan University Professor Izumi Tabata (田畑泉) et al. initially involving Olympic speedskaters. The study used 20 seconds of ultra-intense exercise (at an intensity of about 170% of VO2max) followed by 10 seconds of rest, repeated continuously for 4 minutes (8 cycles). The exercise was performed on a mechanically braked cycle ergometer. Tabata called this the IE1 protocol. In the original study, athletes using this method trained 4 times per week, plus another day of steady-state training, for 6 weeks and obtained gains similar to a group of athletes who did steady state training (70% VO2max) 5 times per week. GIBALA EGIMEN Professor Martin Gibala and his team at McMaster University in Canada have been researching high-intensity exercise for several years. Their 2010 study on students uses 3 minutes for warming up, then 60 seconds of intense exercise (at 95% of VO2max) followed by 75 seconds of rest, repeated for 8–12 cycles. ZUNIGA REGIMEN Jorge Zuniga, assistant professor of exercise science at Creighton University, set out to determine how to fit the highest volume of work and oxygen consumption into the smallest amount of time. He found that intervals of 30 seconds at 90% of power output at VO2 max followed by 30 seconds of rest allowed for the highest VO2 consumption and the longest workout duration at specified intensity. Alternative protocols considered included 100% of maximum power output on the same interval schedule, similar to the Coe regimen, and 90% of maximum power output for three minutes, similar to traditional interval training.