Score Your True Performance. OutSwim the Aging Curve.
The Traditional stopwatch only tells you you’re getting older. OutSwim tells you how well you are actually swimming against the age curve.
Age-Grading Scientifically Rebuilt
This approach already works extremely well in other disciplines. Road running has relied on the World Masters Athletics age-grading tables for decades, and golfers live by handicap indexes.
The time is right for Masters Swimmers.
A New Dimension for Masters Swimming that Decouples Age from Performance
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Masters swimmers ages 30 to 100+ years old—from the adult casual fitness swimmer to elite or masters world record holders. In other words, those affected by the aging curve.
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A universal performance score from 0 to 1,000+ that tells you how strong your swim time is (or was) and adjusts it for your exact, single-year age using 22 proprietary biological aging curves and over 900,000 data points.
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One number tells you the power of your swim, taking into account aging, as over time athletes lose:
Muscle mass and explosive power
VO₂ max and aerobic capacity
Joint flexibility and tendon elasticity
Recovery and cellular repair speed
Hormone levels for muscle synthesis
These losses can be calculated —so you can compete fairly against anyone or your younger self. See “How It Empowers You” button.
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Use your OutSwim score when mapping swim goals, or at swim meets for cross age or event comparisons. You can compare your scores to your competition or your younger swim time’s score. OutSwim can facilitate a Virtual National Championship or Rankings.
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To determine the true best performance in any pool course (SCY, SCM, LCM), event, age, or competitive distance. It’s available worldwide via the free calculator at outswim.io.
The Real Science with 98% Accuracy
The Aging Tax starts at 30 Years of Age
Built for every adult athlete from age 30 to 100+, OutSwim maps exactly how the biological tax affects performance over time.
Our curves are derived from over 900,000 real-world data points across World Aquatics Records, Masters All-Time Swims, and National Records. Anchored by peak Olympic baselines. Elite World Record Scores are in the 1,000 point range and the average masters score is in the mid-600s.
Many Ages. One Scientifically Fair Standard.
OUTSWIM
How It Empowers You
Ten ways OutSwim turns any swim into a fair, age-aware performance score.
Maintaining consistency across the years is a massive physical victory. OutSwim translates your times into a rising or stable score, allowing you to prove you are gaining relative power and efficiency against the calendar even when a traditional stopwatch says you hit the same or slower baseline time.
Keep a clean, visual log of your performance health. Instead of feeling discouraged by a changing calendar, watch your custom OutSwim index and train to outpace the expectations of age.
Break free from static age brackets. OutSwim calculates your score dynamically using your exact single-year age, meaning you can outperform your younger self or out-score competitors even at the top of a traditional 5-year group.
Act as a data-driven goal hunter. Plug in any official sitting record or time—from a local club or LMSC target to a national mark. OutSwim unmasks the score behind the clock to reveal which times are mathematically "soft" and ripe to be broken and The reverse engineering option lets you target a score and time before you've done it.
Input a lifetime personal best from 5, 10, or 15 years ago to compete directly against your younger self. If your current swim fights off the biological tax more effectively than you did back then, you’ve outswum yourself.
Input your times across multiple disciplines to generate a unified average score. OutSwim strips away event bias, revealing your true standing as a versatile, well-rounded swimmer.
Pinpoint exactly what your best events are by easily comparing your scores across different distances and strokes. The science should indicate your highest event score is your strongest event.
Choose a target score you want to hit by the end of the season, and the engine works backward to give you the exact clock times you need to target in practice.
Eliminate hollow medals. OutSwim empowers meet directors to score events on a unified performance scale, awarding true, high-prestige titles based purely on athletic excellence rather than low bracket participation.
Build an electric pool deck culture. Coaches and swimmers can pull random athletes from any lane—regardless of age, gender, or specialty—for instant head-to-head practice challenges.
Whether you want motivation for fitness milestones or for competition. Discover the five performance levels behind every score, from everyday training to world-record pace.
OutSwim can be used for fun practice activities or meet recognition.
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