Calculator HD+ Pro vs Rift Valley Timer

- It is simple, easy to use and well designed - High precision engine - Result is displayed while typing the formula - Multiple undo - Switch between workspaces ! - Persistent history - Specialized keypad for iPhone and iPad - Supports bluetooth keyboard - Right or left-handed mode - Print easily with AirPrint - Share history by e-mail The PRO version has the following advantages: - more workspaces - no advertising

RiVal.T is a powerful, distraction-free countdown timer app. Create and manage groups of sequential timers, each with customizable sounds, vibration, and visual alerts. The app features: Sequential Timer Groups: Organize timers into groups that run one after another, with optional transition beeps and customizable alarms for each group. Drag and drop timers between these groups. Flexible Timer Editing: Set start, warning, and final thresholds for each timer, with intuitive picker wheels for hours, minutes, and seconds. Instantly see which phase you’re in with green, yellow, and red color cues. Three Distinct Timer Displays: Choose between a retro numeric LED, a circular progress donut, or a traffic light-style display, all designed for maximum visibility and minimal distraction. Gesture and Toolbar Controls: Start, pause, rewind, or fast-forward timers with simple gestures or an optional on-screen toolbar, making the app perfect for both quick access and hands-free operation. RiVal.T brings clarity and precision to your timing needs, whether you’re on stage, in the gym, or managing complex routines.