# SwimStart: Reaction Trainer

> Nail your start off the blocks

Canonical page: [https://chrome-stats.com/d/id6779091369](https://chrome-stats.com/d/id6779091369)

## Overview

- **ID:** `id6779091369`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Netflowers Inc.
- **Category:** Sports
- **Version:** 2.1
- **Last updated:** 2026-09-07
- **First published:** 2026-06-16
- **Size:** 10 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/swimstart-reaction-trainer/id6779091369)
- **Website:** [https://www.netflowers.co.jp/ios/swimstart/](https://www.netflowers.co.jp/ios/swimstart/)
- **Privacy policy:** [https://www.netflowers.co.jp/ios/swimstart/privacy.html](https://www.netflowers.co.jp/ios/swimstart/privacy.html)

## Description

The race is decided before you touch the water. Rehearse the start off the blocks, measure the gap between signal and push-off. Apple Watch too. No ads.

The race is decided before you touch the water. SwimStart is a start-reaction trainer for swimmers: rehearse the start off the blocks, measure how long it takes you to move after the signal, and drive that number down.

A REAL START SEQUENCE
• A countdown, then the "Take your marks" call, then the start tone
• The hold after the call is randomised, so you cannot memorise the timing
• Reaction time is measured on a monotonic clock, so your numbers compare fairly
• Move too early and it is flagged as a false start — exactly like at a meet

TRACK YOUR PROGRESS
• Every attempt is saved with its date, reaction time and false-start flag
• See your best time, your average and how many false starts you had
• Your full attempt history in one list

SET IT UP YOUR WAY
• Turn the spoken "Take your marks" cue on or off
• Set the countdown length and the range of the wait before the signal
• Choose touch or motion: tap the screen, or leave the device on a stand and move it

ALSO ON APPLE WATCH
• A standalone Apple Watch app — leave the phone in your bag
• Practice, records and settings straight from your wrist
• A haptic cue alongside the sound, which helps at a noisy poolside

SIMPLE AND PRIVATE
No account, no sign-up. Your records stay on your device.

SwimStart is a training aid. It measures your reaction to a signal from your phone or watch and does not replace official starting equipment or a competition timing system.

## Rankings

- #2,146,219 — Overall

## Similar extensions and apps

- [GoSwim: Reflex](https://chrome-stats.com/d/id6762532245) — 5.00 / 5
- [ReactionTrainer](https://chrome-stats.com/d/id1200534900) — 3.40 / 5
- [Swim Start](https://chrome-stats.com/d/id1156436905) — 3.30 / 5
- [Sprint Start Pro](https://chrome-stats.com/d/id6760863199) — 5.00 / 5
- [Race Start Reaction](https://chrome-stats.com/d/id6754540198)
- [Sprint Start Trainer](https://chrome-stats.com/d/id6473805472) — 4.90 / 5
- [Start Practice ~Track&Field~](https://chrome-stats.com/d/id6503634048) — 4.40 / 5
- [SprintStart](https://chrome-stats.com/d/id6451347398)
- [Sprint Training](https://chrome-stats.com/d/id6760293859)
- [Pro Starter](https://chrome-stats.com/d/id711042537) — 4.80 / 5
- [SprintStart - Reaction Time](https://chrome-stats.com/d/id530460330) — 3.30 / 5
- [Outperform Sprint Tools](https://chrome-stats.com/d/id6761783547) — 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6779091369)