GoSwim: Reflex

Sharpen the moment that wins races.

The start. The single most underrated skill in competitive swimming. Olympic swimmers shave hundredths off their reaction time at the block — and now, with GoSwim: Reflex, you can train yours anywhere.

What you do:

Hold. Wait for the random GO signal. Release as fast as humanly possible. Get scored on your reaction time in milliseconds. Compete with yourself, your teammates, and swimmers around the world.

What makes it real:

• Authentic competitive starter sequence — randomized delay just like a real meet

• Millisecond-precision timing using Apple's high-resolution timers

• False-start detection — release too early and you're disqualified, just like on the blocks

• 3-attempt sessions with averaged results to measure consistency, not luck

• Add more tries when you want to push for a personal best

Built by GoSwim — the global leader in swim training.

For over 20 years, GoSwim has been the trusted source for swim technique education for elite athletes, age-group swimmers, coaches, and triathletes worldwide. Our video library, used by USA Swimming athletes and coaches across six continents, has set the standard for stroke instruction online.

Now we're bringing that same precision to start training.

Daily training video:

Tap the VIDEO button to access today's featured GoSwim training video — fresh content rotated daily from our extensive library. Watch elite coaches break down technique, drills, and race-day strategy that pairs perfectly with your reflex training.

Want more swim training?

Visit GoSwim.tv for our full video library — thousands of technique videos covering every stroke, every drill, every race scenario. The same coaches and resources that have trained Olympians for over two decades.

Features:

- Millisecond-accurate reaction time measurement

- Local leaderboards — track your daily best and all-time records

- Authentic false-start mechanics matching FINA competition rules

- Daily featured training video from the GoSwim library

- Share your reaction times with custom score cards

- Clean, distraction-free interface designed for poolside use

- Add more tries to keep pushing your personal best

Perfect for:

• Competitive swimmers (age-group through college and masters)

• Swim coaches training reaction speed with their teams

• Triathletes working on swim leg starts

• Anyone who wants a fun, addictive reflex challenge

What's coming:

Cloud-based leaderboards, account sync across devices, push notifications for daily challenges, and more — all in development.

Download GoSwim: Reflex and start training the part of your race that happens before the swimming even begins.

Learn more about GoSwim's complete swim training education at GoSwim.tv