Rumba vs Perception Lab

Rumba is the daily Binairo+ puzzle for everyone who loves Takuzu, Binoxxo and binary logic. Simple rules, deep thinking, and a fresh grid waiting every morning. How to Play: fill the grid with two symbols. Follow the rules: 1. Every row and column holds an equal number of both symbols. 2. Never more than two identical symbols side by side. 3. "=" joins cells that match, "x" joins cells that differ. 4. Every puzzle has exactly one solution, so you never have to guess. Features: - Daily Puzzle: a new grid every day, in the difficulty you pick. - Weekly Challenge: a longer puzzle with no timer and no ranking. Take the whole week. - 39 Puzzle Packs: five tiers from Beginner through Advanced, Expert and Wizard up to Genius. Replay any pack whenever you like. - Grids from 6x6 to 24x24: start small, then take on boards most binary puzzle apps never offer. - Hints That Teach: the solver explains the technique behind each move, from pairs and gaps to forced triples and chain reactions, so you improve instead of just getting unstuck. - Strategy Guide: Rules, Basics and Advanced chapters, plus an interactive tour that walks you through your first grid. - Play With Friends: invite friends, compare times head to head, and climb the global leaderboards. - Streaks: build a run of daily solves, and recover one if life gets in the way. - Make It Yours: swap the board symbols for 10 icon sets including sun and moon, animals, nature and food. - Built for Comfort: dark theme, optional timer, quick saves, undo, redo, highlight marks, pinch to zoom, and full offline play. Why Rumba? Binairo, Takuzu, Binoxxo, Binero. Whatever you call it, this is binary logic done properly: hundreds of grids, a solver that actually teaches, and a new challenge every morning. Download Rumba and start your streak today! Rumba is a standalone product with no connection to LinkedIn. It has not been endorsed, authorized, sponsored, or approved by LinkedIn in any way. Privacy policy: https://guriddo.app/rumba/legal/privacy Terms of use: https://guriddo.app/rumba/legal/tos

"That looks easy." Then the reveal shows how far off you actually were. Perception Lab is a benchmark for the senses you never think about — how accurately you judge speed, distance, timing, and change. 46 micro-tests, most under 25 seconds, each measuring one specific thing in real units: milliseconds, degrees, percent. SIX DIMENSIONS, 46 TESTS • Motion & Physics (8) — Speed Copy, Trajectory Guess, Occluded Motion Track, Collision Prediction, Motion Coherence • Space & Geometry (9) — Angle Snap, Distance Recreate, Center Finder, Area Illusion, Mental Rotation • Time & Rhythm (6) — 10-Second Sense, Tempo Match, Reaction Time, Double-Tap Precision, Two-Interval Compare • Focus & Inhibition (7) — Go/No-Go, Change Blindness, Target Tracking, Stroop Speed, Aim Trainer, Symbol Coding • Memory (10) — Sequence Memory, Visual Memory, Chimp Test, Spatial N-Back, Number Memory, Instruction Trap • Calibration & Bias (6) — Percent Estimation, Dot Count, Müller-Lyer Match, Hue Order, Typing Prediction SIX WAYS TO PLAY Today's Run — five tests, seeded from the date. Everyone gets the same set, so streaks and comparisons are fair. Quick Run — a random five when you have two minutes. Practice — pick any test, set the difficulty, drill it until it clicks. Marathon — endless and escalating. Stop when you break. Boss Run — eight rounds on one test, difficulty climbing from 2 to 9, with a single free retry at the halfway mark. Ghost Duel — replay a past run at its original seed and race your own recorded scores. Identical stimulus, no excuses. WHAT YOU LEARN ABOUT YOURSELF Every result feeds a Perception Score and six trait tracks. Over time the app surfaces your systematic biases — that you always tap early, or consistently underestimate distance, or lose accuracy the moment something distracting appears. Those aren't random errors. They're yours, and they're measurable. • A bias profile built from your own error patterns • A 7-day Bias Training Plan aimed at your weakest trait • Weekly recap with 7-day and 30-day trends • 25 achievements, plus trait medals for mastering an entire category • Daily Twist modifiers that bend the rules once you've earned them BUILT TO BE FAIR Deterministic scoring — same seed, same test, every time. Difficulty ramps gradually rather than spiking. Every test reveals the true answer next to yours, in the unit that actually matters. No arcade points, no fake precision, no randomness dressed up as difficulty. OFFLINE AND PRIVATE No accounts. No sign-in. No server. Every test, score, and stat runs on your device and stays there — we have no way to read it. Play on a plane, underground, anywhere. Accessibility: left-handed and one-handed modes, reduce motion, larger text, and independent control over sound and haptics.