Flux – Pure Reflex

Reaction Time & Speed Test

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Three modes. Zero mercy. How far can your reflexes take you? Classic, Rush, and Hardcore — all free, no limits. How fast are your reflexes? Find out. Flux is a minimalist reaction time game designed to push your speed and focus to the limit. Tap the correct lane before tiles hit the bottom — and don't miss. One mistake and it's over. No ads interrupting your flow. No complex menus. No distractions. Just you, your reflexes, and rising pressure. WHY PLAYERS LOVE FLUX • Pure reaction gameplay — tap fast, stay focused, survive • Speed builds over time — the longer you last, the harder it gets • Instant restart — no loading screens, jump right back in • Buttery smooth performance with haptic feedback • Minimalist design that keeps you in the zone • Overlapping tile patterns that test your limits THREE INTENSITY MODES Classic — Learn the flow, build your skill Rush — Starts fast and only gets faster Hardcore — Smaller targets, maximum pressure UNLOCK PRO Take your training further with Pro mode: • Rush and Hardcore difficulty modes • Quad lane layout for elite players • Premium visual themes • Push your high score even higher BUILT FOR FOCUS Flux strips away everything unnecessary. No pop-ups. No energy systems. No waiting. Just a clean reflex challenge you can pick up in seconds and play for hours. Perfect for quick brain training sessions, warming up before gaming, or competing with friends for the fastest reaction time. How long can you stay in the flow?

Ratings & Reviews

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All game modes are now completely free — Classic, Rush, and Hardcore are yours with no limits. Full iPad support. Flux now plays beautifully on iPad with a smooth, Piano Tiles-style layout built for the larger screen. Cleaner gameplay. Tiles in the same lane now always spawn with a consistent gap, keeping every run fair and readable.

Version 1.4

The developer, Kosshii Apps, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Pieter Roelandt
    Size
    • 17.2 MB
    Category
    • Casual
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2025 KosshiiApps
  • Privacy Policy

    • Supports

    • Game Center

      Discover new games and play with friends. This game also features leaderboards.

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