Showing 1–20 of 1,000 ranked alternatives.
Nicolas Lehovetzki
Practice problems and play memory games
Improve mental calculation skills with progressive games. Play memory card matching games to boost cognitive function. Track score history to monitor progress over time. Designed for home use or neurological rehabilitation.
Paul Koomey
Calculate, copy, and share expressions
Calculation allows users to perform scientific computations with trigonometric and inverse trigonometric functions. Users can toggle between degree and radian modes. Expressions and results can be copied with a double tap.
Kirill Dyakonov
Solve tasks to boost focus and speed
Improve focus, reaction speed, and mental agility through timed arithmetic exercises. Track progress with performance metrics. Adjust difficulty levels to challenge users. Sync results across devices for consistent practice.
CHESSQUEEN INC
Play openings and study strategies
Learn openings through detailed classifications and historical context. Study variations with move evaluations and characteristics. Review instructive games from top players for practical understanding. Suitable for all skill levels.
CHESSQUEEN INC
Play chess, solve puzzles, win games
Practice chess tactics with over 2500 exercises focused on mating in 3 or 4 moves. Solve puzzles requiring strategic thinking and precise calculation. Track progress and refine attacking patterns for practical game improvement.
Emir Tarek
Track orders and manage cash flow
Simulate a cashier role by processing customer transactions. Calculate bills accurately, manage payment methods, and handle customer requests. Track inventory levels and organize products for efficient checkout.
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