Timely vs ParaGraph3D

Timely allows you to perform arithmetic operations between time spans and numbers! Addition, subtract, multiplication and division are all supported - no ads and completely free. Timely displays time spans as Hour:Minutes:Seconds with support for decimals and order of operations (PEMDAS/BODMAS), it can also be used as a normal calculator. Some examples of what you can do with Timely. - What pace is required to complete a 12km race in 50 minutes? 50:00 ÷ 12 = 4:10 min/km - Adding up timesheets for work. 07:30:00 + 01:00:00 + 02:25:00 = 10:55:00 Support for percentage and modulus are provided by the '%' key. - Percentage calculation 10:00 + 5% = 10:30 - Modulus calculation 50:00:00 % 24:00:00 = 02:00:00 You can tap on the number display to send me feedback if you encounter issues or have feature requests. Enjoy!

ParaGraph3D is a fast and visual graphing tool for exploring mathematical functions and parametric surfaces in three dimensions. Enter your equations, generate a surface instantly, and explore it from different angles. Rotate, zoom, pan, and tap to inspect 3D mathematical structures interactively. Key features: z = f(x,y) surface plotting x(t,s), y(t,s), z(t,s) parametric surfaces 44 built-in mathematical surfaces Isometric, front, side, and top views Perspective and orthographic cameras Surface, wireframe, and surface + grid modes Multiple color palettes Prism color gradient Adjustable mesh quality and opacity X, Y, and Z axes Tap-to-inspect coordinates Parameter sliders and animation Save and reuse graphs JSON import and export PNG image export Turkish and English language support iPhone and iPad support Fully on-device operation ParaGraph3D is designed for students, teachers, math enthusiasts, and anyone who wants to explore beautiful mathematical surfaces in 3D. No account required. No ads. No subscription.