Spot the pattern. Free forever · Works offline · No ads

Corvyn

Train reasoning, offline

by Zoltán Berki

Download on theApp Store

Tap, or scan the code with your iPhone

QR code for Corvyn on the App Store
Coming soon toGoogle Play

Not on Google Play yet. It’s in testing.

Matrix-reasoning practice that works fully offline: unlimited free puzzles, instant feedback that names the rule, and timed Challenge runs. No account, no ads.

Preview

Train: practice or a timed Challenge, at the difficulty you pick Every answer is corrected on the spot, with the rule that produces it Progress: your ability rank and daily streak Progress: per-rule mastery Progress: what to practise next With Gold: the weekly leaderboard, by percentile All six rule types Pro: every tier compared

Corvyn is an offline trainer for abstract reasoning: the matrix puzzles built from progressions, rotations and logical rules.

It needs no account, shows no ads and collects no analytics. Practice works fully in airplane mode and your history stays on your device. Only two things ever leave it: a puzzle you flag as wrong (the puzzle and your answer, nothing about you), and with Gold, your synced history and leaderboard runs, kept under your subscription rather than your name.

Free, forever

Not a trial

  • Practice at any difficulty you choose: easy, medium or hard, unlimited
  • All six rule types and all six shape arrangements — the whole puzzle pool
  • Every answer is corrected on the spot, with the name of the rule that produces it
  • Unlimited timed Challenge runs, with a score and a full item-by-item review
  • An ability rank from Novice to Elite, per-rule mastery, badges and a daily streak

Bronze

One payment, yours permanently

  • Adaptive practice: instead of you picking a difficulty, Corvyn chooses each item to target your weakest rule

Silver

Subscription

  • Worked explanations: which features are held constant, and so why each wrong option is wrong
  • Drill one rule type at a time
  • Deeper analysis: trajectory, per-rule heatmap, calibration and retention
  • Challenge band placement and run-over-run comparison

Gold

Subscription

  • Cloud sync: your history on every phone you use, and back with your purchase on a new one
  • Weekly leaderboard: your best Challenge run of the week placed among every Gold player's, with your percentile, if you choose to join

Prices are shown in the app, in your local currency, before you buy. Corvyn is an independent practice tool. It is not an official intelligence test and does not give a clinical or certified score.