This update explains results without a value, makes large numbers easier to read and fixes a number of smaller things. New in version 2026.2.1: - When a calculation has no value, PocketCAS now says why instead of showing [ ] or undef: No real solution, No solution found, Undefined, Diverges, No limit or Unknown function, with a short reason below. A suggestion offers the next step, such as the complex solutions, the limits from the left and right, or a plot. - PocketCAS marks a typing error in the input, and a suggestion offers the fix: sin x becomes sin(x), and intergrate becomes integrate. A stopped calculation shows how long it ran and offers Calculate Again. - Next to an exact result, the ≈ line now also shows the decimal value of a result with units and of an integral without an exact value. Very large and very small numbers read as 2.43 × 10¹⁸ instead of 2.43E+18. - When rounding changed a decimal result, the suggestion Exactly shows the exact value. - Results and inputs show large numbers in groups of three digits, such as 1 234 567. Settings > Digit Grouping offers another separator, or none. The editor and copied text keep plain digits, and a number too long for the screen continues on the next line. - The Extrema suggestion now finds minima that it missed before, such as the one of abs(x) at 0. - Clearer calculation steps for some integrals and for extrema, and a step that is too wide for the screen continues on the next line. - On iOS 26, the titles of What's New and the welcome pages are no longer cut off at the top. - On an iPhone in landscape, the Tools menu shows all its tools without scrolling. - Plot Settings show a swatch next to each color, and a color that is not in the list appears as Custom Color. - VoiceOver reads ( and ) as parentheses instead of braces, and selecting entries in Select mode works as expected. - Clearer German and French texts, and a suggestion now adds just its calculation, without a comment line above it. - The previous version of PocketCAS still opens your documents. It shows the new reasons as plain text next to the result. Changes from version 2026.1: - Suggestions under your results: the derivative, zeros, extrema and more, with the answers already shown. Tap one to add it to your document. Settings > Suggestions turns them off or shows them only under the newest result. - A small plot appears next to a function's result. Tap it to add the plot. - Calculation steps show how PocketCAS works out derivatives, integrals and a few other calculations. - Results look like a math textbook, and long results wrap to the width of the screen. - Clearer 2D plots with a finer grid, and 3D surfaces with soft light, shading and a floor grid. Plots in a document pan, turn and zoom right where they are. - Vector field plots: enter [f(x,y), g(x,y)] in a plot. - A new keyboard look, with your recent functions right above it. - On iOS 26 and later, PocketCAS uses Apple's new design, Liquid Glass, and has a new icon. - Brackets close by themselves, and printed documents break long lines at the page's width. - Plots now use seven curve colors, so a 7th or later curve in an older document may get a new color. If something works differently from what you are used to, or you find a problem, please write to us.

PocketCAS is a graphing calculator and computer algebra system for iPhone and iPad. It graphs your functions, gives exact answers and shows the steps behind derivatives and integrals. Everything runs on your device, so it works without internet or an account, and you buy it once instead of paying for a subscription. Graphs - 2D plots of functions, implicit equations, polar and parametric curves, run charts and vector fields. PocketCAS marks zeros, extrema and intersections. In full screen, tap