Disclaimer
Created October 24, 2026
ReflexApp.online is an independent guide site. The information here is published for general guidance about reflex and reaction-time apps, and we work to keep it accurate, but apps change fast and details here can drift out of date.
Products covered on this site
Our main coverage is the Reflex app by Kranus Company (Android, package name brain.reaction.concentration), a brain-training app with reaction, memory and concentration games. We also mention namesake products to help readers tell them apart: Reflex! (com.inoorma.reflex), ReflexTest by Daniel Hiebeler, RTap, and the ExploreLearning Reflex math-facts program for schools. Mentioning these products does not mean they are connected to each other or to us.
Non-affiliation
This site is not affiliated with, endorsed by, or sponsored by Kranus Company, ExploreLearning, Google, or the developers of Reflex!, ReflexTest or RTap. App names, package names and trademarks belong to their respective owners. We use them only to identify the products we describe, which is standard practice for a review and guide site.
We do not host or distribute any app files. The only download route we endorse is the official Google Play listing for Reflex by Kranus Company, where the developer publishes the app. If you download software from any other source, you do so at your own risk, and we recommend checking the package name and developer before installing anything.
Scores and health-related claims
Reaction-time figures on this site — about 250 milliseconds average for a visual cue, about 170 milliseconds for sound, around 150 milliseconds for the fastest reactions — are general educational benchmarks. Your results will vary with your device, your alertness and your health. Nothing here is medical advice, and brain-training games are entertainment and self-measurement tools, not treatments for any condition. If you have concerns about your reaction speed or cognition, speak to a qualified professional.
Accuracy and updates
Facts such as the current Reflex version (14.9) and size (about 24.6 MB) were checked against public listings when written. Where this site and an official listing disagree, the official listing is correct. If you spot an error, let us know via our contact page and we will fix it.