Target Stones

Combine numbered stones, solve clever arithmetic challenges, and enjoy a fresh way to keep your mind engaged.

Think. Calculate. Connect.

Target Stones is a calm, elegant number puzzle. Every round gives you a target and six numbered stones. Combine any two stones with +, −, × or ÷ and they glide together into a new stone. Reach the target exactly, or get as close as you can. There is no timer and no pressure, just good thinking.

LIVING STONES Every calculation physically transforms the board. Two stones merge into one, and the new stone remembers how it was made. Long press any merged stone to see its full history.

SIX WAYS TO PLAY • Classic: endless puzzles with difficulty that adapts gently to how you play. • Nine Stones: the same rules on a three-by-three board. More stones, more routes, more to plan. • Daily Challenge: one shared puzzle each day. Everyone gets the same stones. • Relax: large stones, high contrast, unlimited hints and no negative feedback. Designed with older adults in mind. • Memory: after each calculation, recall which two stones you combined. • Online Duel: face another player through Game Center on the same stones. Choose a 1, 2, 3 or 5 minute clock; closest to the target wins.

PLAY AT YOUR OWN PACE Every solo mode is untimed. If you enjoy a little pressure, turn on an optional round clock of 1, 2, 3 or 5 minutes in Settings. When time runs out, your closest stone still earns partial credit.

PICK YOUR TARGET SIZE Before a round, choose a 2-, 3- or 4-digit target. The stones are dealt to match: a two-digit target uses single-digit stones, a three-digit target adds exactly one two-digit stone, and a four-digit target adds exactly one three-digit stone. Classic starts at two digits and grows with your level.

FIVE LEVELS, ONE RULE From Beginner (one or two steps) to Expert (multistep calculations). Every puzzle is verified to have at least one exact solution before it reaches you, and results always stay positive whole numbers.

THOUGHTFUL HINTS Four gentle hint levels, always based on a real solution from your current stones: a stone to start with, two stones to combine, the operation to use, or the next complete calculation. Hints never cost points.

SCORING THAT REWARDS THINKING Exact matches earn the most, with bonuses for efficient solutions, solving without hints and discovering routes the solver did not expect. Speed is never scored.

MADE TO BE ACCESSIBLE Dynamic Type, VoiceOver labels for every stone and step, large touch targets, Reduce Motion support, adjustable animation speed, high-contrast colors, optional sound and haptics, and feedback that never relies on color alone.

YOUR PROGRESS, YOUR DEVICE Statistics, streaks and daily results are stored only on your device. No account, no internet connection and no data collection.

Target Stones is an enjoyable number puzzle that encourages mental arithmetic, working memory and planning. It is not a medical product and makes no health claims.