Equation Builder app | Ravndal Studio

2026

EQUATION: Swipe. Solve. Survive.

Ready for the ultimate brain workout? EQUATION takes the addictive flow of sliding puzzles and injects it with pure adrenaline.

Slide tiles, merge numbers, forge operators, and solve equations before the board fills up. Every hit feels bigger, every stage clear more rewarding, and every run plays out differently. This is not just a math test - it is a battle of survival, speed, and instinct.

Math with pressure and momentum

Complete a stage, grab a run modifier, and dive back in with new tools and tactics. The pressure escalates, the builds diverge, and the glory keeps growing. How far can you climb before the grid takes over?

End User License Agreement (EULA): Apple Standard EULA

Why you will keep coming back

Find Your Flow

String together brilliant moves and feel every hit land. Merges explode with particles, near-misses give clear feedback, and audio-visual cues tell you exactly when momentum is building - and when it peaks.

The Clutch Factor

When the board fills up, one final move can trigger massive clutch bonuses and screen-shaking effects. Clear a stage and watch a "STAGE COMPLETE!" banner burst open as every remaining tile cashes out - each point earned visibly before the next stage begins.

Forge Your Legend

Progress through ranks from Novice to Edison and beyond. Unlock and track achievements that reflect how you actually play - and review any achievement in detail to know exactly what you are chasing.

Perk-Driven Runs

After every stage clear, choose one of three perks that stay active for the rest of your run. Grace Window, Forge Mastery, Clutch Amplifier, Chain Reaction, Adrenaline Rush - no two runs play the same, and the builds diverge fast.

Daily Challenge

Every day, everyone gets the same board - a deterministic puzzle that resets at midnight. Beat it, share your result, and challenge your friends to top your score on equal terms.

Weaponize Your Operators

Merge two identical numbers to forge a brand-new operator on the spot - direction and value determine what you get. Forged pieces are visually distinct and immediately readable, turning a tactical read into an instant power play.

Smart and Fair by Design

The intelligent engine prevents impossible loops. Hints run from a real inventory - they only consume when a genuine move is found. More recovery tools are tuned in for when a board gets tough. Skill is always rewarded over luck.

Stage-Based Intensity

Each board is a focused mission with clear targets. The 5x5 mode runs a dynamic move budget - leftover moves carry forward, and your score cushions the next target. Comebacks are real, and no run ends without a fighting chance.

"Math has never felt this alive."

Every run is different. Every stage clear is earned. Do you have what it takes to survive?