Testing made simple. In your pocket.
Execute standardized aerobic, sprint, and agility protocols. Record split times with 0.01s precision, track team rosters, export performance data, and calculate physiological baselines, all on your smartphone, with accurate beep cues to manage your tests.
Every protocol, timer, and result in one lineup.
Standardized audio-paced beeps, split-second optical timing, athlete roster management, and automated physiological metrics — unified into a seamless mobile field laboratory.

Don't guess. Measure.
Fitness testing should be simple. For thirty years, coaches have juggled stopwatches, blown paper sheets across wet tracks, and manually calculated athlete MAS paces on clipboards. Time4Test crystallizes the entire methodology into four seamless movements.
Test
Standardized protocols replace makeshift courses. Acoustic beeps and audio countdowns guide every turn.
Record
Tap directly on athlete jersey numbers as they cross the line. 0.01-second precision without paper tally sheets.
Analyze
Formulas compute Maximal Aerobic Speed (MAS / VMA), estimated VO2max, and normative percentiles instantly.
Share
Publication-grade performance cards for social channels, alongside formatted CSV and PDF reports for staff.
Three ways to test
Whether you need certified laboratory-standard protocols, specialized conditioning exercises, or a completely customized timer — Time4Test adapts to any field setup.
Goal. Protocol. Equipment. Source.
Choose the exact test built for your sport or physical goals. Every protocol in Time4Test includes a comprehensive technical sheet so you always know the science, setup, and cadence before stepping onto the track.
The goal
Know the target physiological capacity: Maximal Aerobic Speed (MAS / VMA), estimated VO2max, COD agility, or repeat-sprint fatigue.
The protocol
Standardized step-by-step instructions, calibrated stage speed increments, acoustic audio cues, and precise rest intervals.
The equipment
Exact cone placements, track dimensions, shuttle distances, and required audio or timing gear to execute seamlessly.
The scientific source
Cites peer-reviewed sports science literature (Cazorla, Bangsbo, Buchheit, Cooper) backing normative formulas.
From a test to useful data.
No manual calculations, paper tally sheets, or post-session spreadsheets. Time4Test turns raw split times into actionable physiological baselines automatically.
Automatic VMA & VO2max calculation
The app automatically computes Maximal Aerobic Speed (VMA / MAS) and estimated VO2max the instant a test terminates — eliminating manual formulas and spreadsheet conversions.
Fatigue index & VMI (intermittent velocity)
Quantify pacing degradation, work-to-rest recovery, and Maximal Intermittent Velocity (VMI / IFT score) on shuttle protocols like 30-15 IFT and Yo-Yo.
Best time, worst time & split dynamics
Measure every split with 0.01s accuracy. Instantly see your best lap time, worst interval, drop-off rate, and average pace consistency.
Tailored indices for every protocol
From Repeat Sprint Ability (RSA fatigue index decrement) to agility change-of-direction times, each test generates deep physiological indices specific to its science.

Scientific integrity over marketing promises.
Time4Test does not manufacture unverified AI scores or vanity metrics. We digitalize the exact physiological protocols relied upon by sports institutes worldwide.
Peer-reviewed citations
Protocols directly mirror published sports science literature: Cazorla & Léger (1993), Jens Bangsbo (1996), Martin Buchheit (2008), and Kenneth Cooper (1968).
0.01s acoustic calibration
All countdown audio and timing cues are generated with low-jitter hardware clocks to ensure sprint and bleep lines match optical stadium standards.
Normative datasets
Athletes are benchmarked against verified national academy, collegiate, and elite tier datasets—never vague or hallucinated scores.
Mathematical transparency
Every equation used to estimate VO2max and Maximal Aerobic Speed is open to inspection and review directly within the app and documentation.


