Krono

cpstest is a web-based tool for testing mouse click speed, evaluating concentration, measuring reaction speed, and providing fun, focused training.

Simple online tests for reaction time, memory, and focus

自动识别公开牌面、追踪剩余牌，支持斗地主、跑得快、掼蛋，提供 iOS 与 Android 版本。

Free Live Photo Converter & Maker

The iOS companion for independent tutors — students, scheduling, lesson packages and payments in one place, with AI-drafted parent feedback.

Research-grounded AI pet care answers, reminders and notes