PROGRAMS • Press 2nd PRGM to write and run TI-BASIC programs right on your calculator • Create your own in the built-in editor, with a toolbar for →, Lbl, Goto, If, For, Disp, Input and more • Import .8xp files from the Files app and run them with Input, Prompt, Menu, Pause and Output • Programs share variables, lists and Ans with the home screen, so results are ready for your next calculation • Sample programs QUADRAT and PYTHAG get you started • Early version: some programs use commands we do not support yet. Use the report button in the PRGM menu to send us a program you want to see running GRAPHING AND INPUT • ZOOM menu with the new names: Zoom Box, Zoom Default, Zoom [-10,10], Zoom Fit and more • Math templates palette on alpha + X,T,θ,n: mixed number, absolute value, piecewise, integral, derivative, sum, nCr, nPr and matrix in one place • Matrices fill in right on the home screen: alpha + F3 picks the size, then you type into the cells. Absolute value shows with bars around the expression • alpha + enter shows the answer as a decimal, whatever ANSWERS is set to • Quick zoom on the graph screen with + and − SMALL THINGS • With the status line on, tap NORMAL, FLOAT, AUTO, REAL or RADIAN to change that setting right there • nDeriv( is exact for polynomials, and fnInt( integrates adaptively for precise results, on the home screen and in graph calculations • Press enter twice on an input with a syntax error to keep it in the history and free the line • The MEM menus, the canvas list and the PRGM menu wear the new menu style • Stability improvements throughout

FOUR WAYS TO GRAPH • Polar, Parametric and Sequence graphing join Function mode. Switch in MODE and everything follows: window variables, trace, tables, CALC values like dy/dx and dr/dθ, and zoom • Sequences u, v, w with TIME plots, WEB cobwebs and phase plots A NEW FACE • Press ⌂ for the icon home screen: every tool one tap away • Every menu and settings screen has been redesigned, with a cleaner look and pill-style choices • Optional status line shows NORMAL FLOAT AUTO REAL RADIAN at a glance, plus a canvas switcher for side-by-side calculations CONICS & LINES, REBUILT • Pick an equation template (E1 to E6) and type the values right into the equation • Lines join the conics, including the vertical line X=C that Y= can never draw • Graph several equations at once in their own colors. SOLVE still prints center, foci, vertices, directrix and asymptote slopes STATISTICS THAT GUIDE YOU • Every test, interval and distribution wizard got clear input fields and a real CALCULATE button • Manual-Fit: fit your own line with the cursor. QuickPlot & Fit-EQ: drop points on the graph and fit a model right there SMALL THINGS YOU'LL FEEL EVERY DAY • Error messages appear right under your input line, with the exact spot highlighted • A smarter cursor: placeholder boxes in templates, and the arrow keys walk fraction and integral fields • Points of Interest appear while you trace, so the plain graph stays clean • Prefer French key labels? MODE ▸ KEYCAPS: FRANÇAIS Previous update: • The graph screen learned to see: Points of Interest trace, one-finger graph scrolling, the complete ZOOM and DRAW menus, pictures and background images

THE GRAPH SCREEN LEARNED TO SEE • Points of Interest trace: zeros, maxima, minima and intersections snap right under your crosshair while you trace — asymptotes too. Turn it on under FORMAT ▸ DETECT • Scroll the graph with one finger — drag the window wherever you like, and the GRAPH key snaps it right back home • The complete ZOOM menu: ZBox, Zoom In/Out, ZSquare, ZDecimal, ZTrig, ZInteger, ZoomFit, ZoomStat and fraction presets — plus zoom factors, ZPrevious, ZoomSto and ZoomRcl on the new MEMORY tab • FORMAT grew from 3 to 8 settings: grid, axes, labels, coordinates, expressions and more • Full support for piecewise functions. A COMPLETE DRAW MENU • Write Text( on the graph, doodle with Pen, set points and pixels, drag an interactive Circle( • Store and recall ten pictures (Pic1–Pic0) — or put any photo behind your graph as a background image • Shade( fills the region between two curves, and the distribution menu gained a DRAW tab: ShadeNorm, Shade_t, Shadeχ², ShadeF DEEPER STATISTICS • Three new regression models: PropReg, RecipReg and eBASEReg SMALL THINGS YOU'LL FEEL EVERY DAY • Fraction results now show little blue ◄► arrows — tap them to flip between fraction and decimal • New MODE options: ANSWERS (auto/decimal/fraction), FRACTION TYPE (n/d or Un/d) and the GRADIAN angle mode • New commands: seq(, ΔList(, augment(, ClrAllLists, storing to dim( • VARS menu now covers window, zoom and statistics variables, GDBs, pictures and Y-VARS • Every zoom command is in the Catalog with a description of how it sets your window Previous update: • The apps key went live — Geometry, Polynomial Root Finder, Finance, Probability Simulation, Science Tools, Transformation Graphing, Conics, Inequality Graphing and the Periodic Table

THE GRAPH SCREEN LEARNED TO SEE • Points of Interest trace: zeros, maxima, minima and intersections snap right under your crosshair while you trace — asymptotes too. Turn it on under FORMAT ▸ DETECT • The complete ZOOM menu: ZBox, Zoom In/Out, ZSquare, ZDecimal, ZTrig, ZInteger, ZoomFit, ZoomStat and fraction presets — plus zoom factors, ZPrevious, ZoomSto and ZoomRcl on the new MEMORY tab • FORMAT grew from 3 to 8 settings: grid, axes, labels, coordinates, expressions and more • Full support for piecewise functions. A COMPLETE DRAW MENU • Write Text( on the graph, doodle with Pen, set points and pixels, drag an interactive Circle( • Store and recall ten pictures (Pic1–Pic0) — or put any photo behind your graph as a background image • Shade( fills the region between two curves, and the distribution menu gained a DRAW tab: ShadeNorm, Shade_t, Shadeχ², ShadeF DEEPER STATISTICS • Three new regression models: PropReg, RecipReg and eBASEReg SMALL THINGS YOU'LL FEEL EVERY DAY • Fraction results now show little blue ◄► arrows — tap them to flip between fraction and decimal • New MODE options: ANSWERS (auto/decimal/fraction), FRACTION TYPE (n/d or Un/d) and the GRADIAN angle mode • New commands: seq(, ΔList(, augment(, ClrAllLists, storing to dim( • VARS menu now covers window, zoom and statistics variables, GDBs, pictures and Y-VARS • Every zoom command is in the Catalog with a description of how it sets your window Previous update: • The apps key went live — Geometry, Polynomial Root Finder, Finance, Probability Simulation, Science Tools, Transformation Graphing, Conics, Inequality Graphing and the Periodic Table

THE APPS KEY IS NOW LIVE Press [apps] for a whole suite of new built-in apps — free for everyone for a limited time: • Geometry — draw points, lines, circles and polygons, measure lengths, angles and areas, explore transformations, animations and loci • Polynomial Root Finder & Simultaneous Equation Solver • Finance — Time-Value-of-Money solver, NPV, IRR, amortization • Probability Simulation — toss coins, roll dice, pick marbles, spin spinners, draw cards • Science Tools — sig-fig calculator, unit converter, data/graphs wizard, vector calculator • Transformation Graphing — animate function families with coefficient sliders • Conics — circles, ellipses, parabolas, hyperbolas • Inequality Graphing — shade solution regions, including vertical X= inequalities • Periodic Table — every element with detailed properties NUMERIC SOLVER • Solve any equation for any variable — now in the MATH menu and on the solve key MORE IMPROVEMENTS • Fresh new app icon • Arrow keys auto-repeat while held down • Better layout on iPad in landscape — the display stays visible • Shared graph images now match your Light/Dark mode • Saving an image now only asks for add-to-photos permission — the app never gets access to your photo library • Median and quartiles with frequency lists, logBASE with list arguments, and many more fixes Previous versions: • Dark Mode for the calculator display — history, math editor, and every submenu adapt • Redesigned Catalog and Tutorial in modern iOS style • Big theme selection (Classic, Graphite, Silver, Gold, Rose, Mint …) with a fine-tuning color picker

THE APPS KEY IS NOW LIVE Press [apps] for a whole suite of new built-in apps — free for everyone for a limited time: • Geometry — draw points, lines, circles and polygons, measure lengths, angles and areas, explore transformations, animations and loci • Polynomial Root Finder & Simultaneous Equation Solver • Finance — Time-Value-of-Money solver, NPV, IRR, amortization • Probability Simulation — toss coins, roll dice, pick marbles, spin spinners, draw cards • Science Tools — sig-fig calculator, unit converter, data/graphs wizard, vector calculator • Transformation Graphing — animate function families with coefficient sliders • Conics — circles, ellipses, parabolas, hyperbolas • Inequality Graphing — shade solution regions, including vertical X= inequalities • Periodic Table — every element with detailed properties NUMERIC SOLVER • Solve any equation for any variable — now in the MATH menu and on the solve key MORE IMPROVEMENTS • Fresh new app icon • Arrow keys auto-repeat while held down • Better layout on iPad in landscape — the display stays visible • Shared graph images now match your Light/Dark mode • Saving an image now only asks for add-to-photos permission — the app never gets access to your photo library • Median and quartiles with frequency lists, logBASE with list arguments, and many more fixes Previous versions: • Dark Mode for the calculator display — history, math editor, and every submenu adapt • Redesigned Catalog and Tutorial in modern iOS style • Big theme selection (Classic, Graphite, Silver, Gold, Rose, Mint …) with a fine-tuning color picker

Dark Mode for the Display - Switch the calculator screen between Light and Dark mode. - History, math editor, and every submenu (Math, Stat, List, Distr, Catalog, Tutorial …) adapt. Toggle it in the Mode menu under LIGHT / DARK. Brighter Plot Colors in Dark Mode - Function curves, plots and value-table entries automatically lift to clearly readable tones on dark backgrounds. Your saved colors stay unchanged in Light mode. Refreshed Catalog & Tutorial - The Catalog menu and Tutorial & Help have been redesigned in modern iOS Settings style — rounded cards, colored icon tiles, and larger tap targets. More Theme Options - The onboarding now offers a wide selection of polished themes (Classic, Graphite, Silver, Gold, Rose, Coral, Mint, Iris, Plum, Space …), fine-tunable via the color picker. Other improvements • Color picker saves your choice instantly • Several Mac stability fixes (graph pinch-zoom crash, more) • Better contrast for values under the graph • Side menu with modern colored icons • Numerous layout and performance polishes Previous Versions: • sin²(x), cos²(x), tan²(x) now correctly compute the squared value • Heart curve and similar plots render fully symmetric • "Rate this app" popup shows at most once per day • Seconds symbol (") accessible via ALPHA+[+] • Share graphs with equations displayed right on the image • Instantly share equations with results (e.g. "2+2 = 4")

Math & Graphing Fixes • sin²(x), cos²(x), tan²(x) now correctly compute the squared value • Graphs like f(x)=x^(2/3)±√(2-x²) (heart curve) now plot fully symmetric instead of just the right half • Right-arrow now reliably exits an exponent Quality of Life • "Rate this app" popup now shows at most once per day • Extreme Window settings now show a clear warning instead of slowing down the app Improved Angle Input • Seconds symbol (") now accessible via ALPHA+[+] key • DMS functions easier to find in Angle menu Plus various stability fixes and minor improvements. Previous Versions: Enhanced GRAPH Sharing • Share your graphs with equations displayed right on the image (from GRAPH menu) • Statistical plots now show your list data alongside the graph Improved Sharing Features (SHARE button) • Instantly share equations with results (e.g., "2+2 = 4") • Included LaTeX math syntax to use equations in other apps

Enhanced GRAPH Sharing • Share your graphs with equations displayed right on the image (from GRAPH menu) • Statistical plots now show your list data alongside the graph Improved Sharing Features (SHARE button) • Instantly share equations with results (e.g., "2+2 = 4") • Included LaTeX math syntax to use equations in other apps Performance & Stability • Removed deprecated services for better reliability • Bug fixes and under-the-hood improvements

+ Bug fixes and improvements.

+ Bug fixes and improvements.

+ Added 1000s separator + Added Seconds “ to ANGLE menu + Performance improvements + Fixed a divide logic issue + Bug fixes

+ Added 1000s separator + Added Seconds “ to ANGLE menu + Performance improvements + Fixed a divide logic issue + Bug fixes

+ Added 1000s separator + Added Seconds “ to ANGLE menu + Performance improvements + Fixed a divide logic issue + Bug fixes

+ Performance improvements + Fixed a divide logic issue + Added 1000s separator + Bug fixes

+ Performance improvements + Fixed a divide logic issue + Added 1000s separator + Bug fixes

Biggest Taculator update in 2021! + New side menu that helps you with quick access links. Open it by swiping from left to right in the calculate menu. + Redesigned Y= menu. Now you can give the graphs your favorite colors. + Support to graph piecewise functions. New Taculator commands available! + Med-Med + randNorm + randBin + Matrix-List + List-Matrix + DrawInv + 2-PropZ-Interval + Chi²-Test + Chi²GOF-Test + LinRegT-Test + LinRegT-Interval + ANOVA Previous improvements: + Tracing functions is now more accurate. + While tracing you can enter an x-value and Taculator will show the y-value. Press the TRACE button and enter any value. + Use the nDeriv and fnInt commands in the Y= menu to graph the derivative or integral function. + You can now graph families of functions by using the following syntax: {1,2,3}X.

Biggest Taculator update in 2020! + New side menu that helps you with quick access links. Open it by swiping from left to right in the calculate menu. + Redesigned Y= menu. Now you can give the graphs your favorite colors. + Support to graph piecewise functions. New Taculator commands available! + Med-Med + randNorm + randBin + Matrix-List + List-Matrix + DrawInv + 2-PropZ-Interval + Chi²-Test + Chi²GOF-Test + LinRegT-Test + LinRegT-Interval + ANOVA Previous improvements: + Tracing functions is now more accurate. + While tracing you can enter an x-value and Taculator will show the y-value. Press the TRACE button and enter any value. + Use the nDeriv and fnInt commands in the Y= menu to graph the derivative or integral function. + You can now graph families of functions by using the following syntax: {1,2,3}X.

Biggest Taculator update in 2020! + New side menu that helps you with quick access links. Open it by swiping from left to right in the calculate menu. + Redesigned Y= menu. Now you can give the graphs your favorite colors. + Support to graph piecewise functions. New Taculator commands available! + Med-Med + randNorm + randBin + Matrix-List + List-Matrix + DrawInv + 2-PropZ-Interval + Chi²-Test + Chi²GOF-Test + LinRegT-Test + LinRegT-Interval + ANOVA Previous improvements: + Tracing functions is now more accurate. + While tracing you can enter an x-value and Taculator will show the y-value. Press the TRACE button and enter any value. + Use the nDeriv and fnInt commands in the Y= menu to graph the derivative or integral function. + You can now graph families of functions by using the following syntax: {1,2,3}X.

Biggest Taculator update in 2020! + New side menu that helps you with quick access links. Open it by swiping from left to right in the calculate menu. + Redesigned Y= menu. Now you can give the graphs your favorite colors. + Support to graph piecewise functions. New Taculator commands available! + Med-Med + randNorm + randBin + Matrix-List + List-Matrix + DrawInv + 2-PropZ-Interval + Chi²-Test + Chi²GOF-Test + LinRegT-Test + LinRegT-Interval + ANOVA Previous improvements: + Tracing functions is now more accurate. + While tracing you can enter an x-value and Taculator will show the y-value. Press the TRACE button and enter any value. + Use the nDeriv and fnInt commands in the Y= menu to graph the derivative or integral function. + You can now graph families of functions by using the following syntax: {1,2,3}X.

New Taculator commands available! + 2-PropZ-Interval + Chi²-Test + Chi²GOF-Test + LinRegT-Test + LinRegT-Interval + ANOVA We fixed some bugs and improved a lot of functions: + Tracing functions is now more accurate. + While tracing you can enter an x-value and Taculator will show the y-value. Press the TRACE button and enter any value. + A black graphing screen due to a wrong window setting of too small values for Xscl and Yscl has been fixed. + Use the nDeriv and fnInt commands in the Y= menu to graph the derivative or integral function. + You can now graph families of functions by using the following syntax: {1,2,3}X. + Many more bugs have been fixed.

Taculator is now even more powerful! We fixed some bugs and improved a lot of functions: + Tracing functions is now more accurate. + While tracing you can enter an x-value and Taculator will show the y-value. Press the TRACE button and enter any value. + A black graphing screen due to a wrong window setting of too small values for Xscl and Yscl has been fixed. + Use the nDeriv and fnInt commands in the Y= menu to graph the derivative or integral function. + You can now graph families of functions by using the following syntax: {1,2,3}X. + Many more bugs have been fixed.

Several bugs have been fixed: + 1-Var Stats didn't work if FreqList has decimal numbers. + Ans and ^ (exponent symbol) didn't work correctly. + Intersection between two functions is now more accurate. + Other smaller bugs fixed. Previous update: + Taculator now supports different history tabs for your calculations. To add a new history tab, scroll down on the home menu, and click on the "+" icon. This creates a new history tab. This feature is great if you work on different math problems at the same time or want to save your recent calculations but start with a fresh screen. + Press and hold any button to access the second function behind it. For example, if you want to use sin-1 you can press "shift" -> "sin" or now just press and hold on "sin" until you see that shift commands are highlighted. + With this update you export your graph window as an image or PDF and share it with your friends or save it for yourself. Press the "graph" button and you will see a new little icon on the right. You can also save or share a full-screen graph. + iPad users are now able to enjoy Taculator in landscape mode and use multitasking with split-screen. This enables you to use your calculator together with another app. Furthermore, here's the detailed list of new calculator commands. + Draw circles with specified radius and x- and y-value. + Seconds " button now available. Press the Shift button and "+" button to use it. + New Angle commands to convert coordinates from Polar to Cartesian coordinates and vice versa: R►Pr(, R►Pθ(, P►Rx(, P►Ry( + New Matrix commands: Fill( (fill a list or matrix with numbers) and randM (generate a random number matrix). + A ton of new statistical tests: 2-SampZTest, 2-SampTTest, 1-PropZTest, 2-PropZTest, 2-SampZInt, 2-SampTInt, 1-PropZInt. + New regressions added to STATS menu: LnReg, PwrReg, Logistic, SinReg. + geometpdf and geometcdf added to the Distribution menu.

Several bugs have been fixed: + 1-Var Stats didn't work if FreqList has decimal numbers. + Ans and ^ (exponent symbol) didn't work correctly. + Intersection between two functions is now more accurate. + Other smaller bugs fixed. Previous update: + Taculator now supports different history tabs for your calculations. To add a new history tab, scroll down on the home menu, and click on the "+" icon. This creates a new history tab. This feature is great if you work on different math problems at the same time or want to save your recent calculations but start with a fresh screen. + Press and hold any button to access the second function behind it. For example, if you want to use sin-1 you can press "shift" -> "sin" or now just press and hold on "sin" until you see that shift commands are highlighted. + With this update you export your graph window as an image or PDF and share it with your friends or save it for yourself. Press the "graph" button and you will see a new little icon on the right. You can also save or share a full-screen graph. + iPad users are now able to enjoy Taculator in landscape mode and use multitasking with split-screen. This enables you to use your calculator together with another app. Furthermore, here's the detailed list of new calculator commands. + Draw circles with specified radius and x- and y-value. + Seconds " button now available. Press the Shift button and "+" button to use it. + New Angle commands to convert coordinates from Polar to Cartesian coordinates and vice versa: R►Pr(, R►Pθ(, P►Rx(, P►Ry( + New Matrix commands: Fill( (fill a list or matrix with numbers) and randM (generate a random number matrix). + A ton of new statistical tests: 2-SampZTest, 2-SampTTest, 1-PropZTest, 2-PropZTest, 2-SampZInt, 2-SampTInt, 1-PropZInt. + New regressions added to STATS menu: LnReg, PwrReg, Logistic, SinReg. + geometpdf and geometcdf added to the Distribution menu.

Several bugs have been fixed: + 1-Var Stats didn't work if FreqList has decimal numbers. + Ans and ^ (exponent symbol) didn't work correctly. + Intersection between two functions is now more accurate. + Other smaller bugs fixed. Previous update: + Taculator now supports different history tabs for your calculations. To add a new history tab, scroll down on the home menu, and click on the "+" icon. This creates a new history tab. This feature is great if you work on different math problems at the same time or want to save your recent calculations but start with a fresh screen. + Press and hold any button to access the second function behind it. For example, if you want to use sin-1 you can press "shift" -> "sin" or now just press and hold on "sin" until you see that shift commands are highlighted. + With this update you export your graph window as an image or PDF and share it with your friends or save it for yourself. Press the "graph" button and you will see a new little icon on the right. You can also save or share a full-screen graph. + iPad users are now able to enjoy Taculator in landscape mode and use multitasking with split-screen. This enables you to use your calculator together with another app. Furthermore, here's the detailed list of new calculator commands. + Draw circles with specified radius and x- and y-value. + Seconds " button now available. Press the Shift button and "+" button to use it. + New Angle commands to convert coordinates from Polar to Cartesian coordinates and vice versa: R►Pr(, R►Pθ(, P►Rx(, P►Ry( + New Matrix commands: Fill( (fill a list or matrix with numbers) and randM (generate a random number matrix). + A ton of new statistical tests: 2-SampZTest, 2-SampTTest, 1-PropZTest, 2-PropZTest, 2-SampZInt, 2-SampTInt, 1-PropZInt. + New regressions added to STATS menu: LnReg, PwrReg, Logistic, SinReg. + geometpdf and geometcdf added to the Distribution menu.