Sparkith

This is a lightweight mental math practice app. Just open it and start—spend a few minutes a day honing your speed and accuracy in addition, subtraction, multiplication, and division. 【Three Training Modes】 • Quick Training: A mixed set of 20 questions—start immediately. • 60-Second Challenge: Solve as many problems as possible within one minute. • Custom Training: Select your own question types, difficulty levels, and number of problems. 【Instant Feedback】 Know immediately if your answer is correct. Consecutive correct answers build a "streak," helping you stay focused. 【Mistake Log】 Incorrect answers are automatically saved. Review and re-practice these specific problems anytime; they are automatically removed once answered correctly. 【Performance Statistics】 Track your daily problem count, accuracy rate, and best streak, as well as accuracy for each operation (addition, subtraction,…