Hydra

All Versions of Hydra

• 
  3.2.2(25)This is the latest versionLatest

  XAPK

  Oct 18, 202630.3 MBWhat's New
  Download
  What's new in the version 3.2.2

  Updated on Oct 18, 2026

  Version 3.2.2:
  
  • New: Line Tracing and Tube Figures.
  • Memory follows a field report from the real test: 8 people, questions link their details, own leaderboard.
  • The timer in Memory and Stroop keeps running in the background.
  • Chained Calculation and Equation wrap long tasks, number pads fit small screens.
  • The back button asks before leaving a running test.
  • Pro stays reliably linked to your account at startup.
  

• 
  3.2.1(24)

  XAPK

  Sep 27, 202623.0 MBWhat's New
  Download
  What's new in the version 3.2.1

  Updated on Sep 27, 2026

  Version 3.2.1:
  
  • Memory no longer crashes when you open it.
  • "Test again" restarts with the settings of your last start: in training your chosen starting level is kept, in Anagram, Chained Calculation, Equation and Number Sequence.
  • Stroop applies the starting interval you picked.
  • Progress: the next goal for Memory is given in points, so it can actually be reached.
  

• 
  3.1.4(22)

  XAPK

  Sep 25, 202623.0 MBWhat's New
  Download
  What's new in the version 3.1.4

  Updated on Sep 25, 2026

  Version 3.1.4:
  
  • Your history now belongs to your account: runs from other devices and the web app appear in the app, and a reinstall restores them. "Delete all" clears your account history too.
  • Cancelled tests without a single answer are no longer saved.
  • Scores no longer get lost while uploading.
  • Sign-in is always reachable in your profile.
  • Statistics only compare results on the same scale.
  

• 
  3.1.3(21)

  XAPK

  Sep 8, 202622.9 MBWhat's New
  Download
  What's new in the version 3.1.3

  Updated on Sep 8, 2026

  Version 3.1.3:
  
  • New module Implications: two statements, five answers, find the conclusion that follows necessarily. Difficulty adapts, with scoring, leaderboard and an error analysis that names the fallacy and shows it as a set diagram. Also available during the trial.
  

• 
  3.1.2(19)

  XAPK

  Aug 30, 202622.7 MBWhat's New
  Download
  What's new in the version 3.1.2

  Updated on Aug 30, 2026

  Version 3.1.2:
  
  • New module Cube Folding: pick the cube view that folds from the net shown. Trains spatial reasoning, with scoring and error analysis.
  • New Community section: share questions, ideas and experiences, reply to posts, vote and mark solutions (for signed-in users).
  • Paper Folding: reworked figures for a cleaner presentation.
  

• 
  3.1(18)

  XAPK

  Aug 28, 202622.5 MBWhat's New
  Download
  What's new in the version 3.1

  Updated on Aug 28, 2026

  Version 3.1:
  
  • Hydra now runs in your browser too: after the update, the app shows a one-time note about app.hydrapt.com. Same account, same progress, same leaderboard.
  • Anagram test: cleaned-up word lists, and the ß tile shows a single ß again instead of "SS".
  • Equation test: mathematically correct answers are now always counted as correct.
  

• 
  3.0.4(17)

  XAPK

  Aug 16, 202622.5 MBWhat's New
  Download
  What's new in the version 3.0.4

  Updated on Aug 16, 2026

  Version 3.0.4:
  
  • Form Focus: the leaderboard now reliably recognises that results are based on the guessing-corrected scoring. Results from before the correction are no longer mixed in with new ones.
  • Your existing Form Focus results are kept and stay comparable.
  

• 
  3.0.3(16)

  XAPK

  Aug 13, 202622.5 MBWhat's New
  Download
  What's new in the version 3.0.3

  Updated on Aug 13, 2026

  Version 3.0.3:
  
  • Matrices and Paper Folding: new point scoring. It counts how hard the solved items were, not just how many. Earlier results keep their percentages.
  • Form Focus: wrong answers are now subtracted, so guessing no longer scores. The pace adapts more reliably. Your previous Form Focus results are removed once in this update.
  • Training mode: the timer now runs correctly for the duration you pick.
  

• 
  3.0.1(14)

  XAPK

  Aug 4, 202622.5 MBWhat's New
  Download
  What's new in the version 3.0.1

  Updated on Aug 4, 2026

  Version 3.0.1:
  
  • New module: Letter Cancellation, a concentration test with a mid-test rule switch
  • Paper Folding: fixed two tasks with ambiguous answer options, cleaner figure rendering
  • Onboarding polish
  • Minor improvements and copy fixes
  

• 
  3.0(13)

  XAPK

  Jul 30, 202622.4 MBWhat's New
  Download
  What's new in the version 3.0

  Updated on Jul 30, 2026

  Version 3.0:
  
  • All-new UI
  • Sign in across your devices with Google
  • Bug fixes and improved stability