2.2.0
2024-04-01
Fixed problem when opening unit conversion
2.1.9
2024-03-25
- New option: Ignore all infix operators at the end of the input
- Improved equation solver
- Improved graphing
- Bug fixes and performance improved.
2.1.8
2023-11-14
- Support graphing erf and erfc function for normalcdf
- Improved symbolic integral
- Fixed some problems
2.1.7
2023-10-31
- Support graphing piecewise syntax
- Inlined Ans value
- Fixed keymap binding issue on iPad
- Allow to change fraction key position to ALPHA X
2.1.6
2023-09-04
Bug fixes and performance improved.
2.1.1
2023-05-10
- Improved equation solver.
- Improved programming feature.
- Improved expression details.
- Fix graph of sequence function not working in some cases.
- Improved plaintext export.
- Fix symbolic derivative not works with Yn functions.
- Support multiply two lists variable.
- Improved TVM solver.
- Allow to change fraction key position.
- Display numeric result for symbolic polar form.
2.1.0
2023-01-19
Added numeric result in home screen.
Bug fixes.
2.0.7
2022-09-09
Bug fixes and performance improved.
2.0.6
2021-12-27
Allow change display font size bigger.
Better equation solver and numeric calculation.
Fixed some problems and improve performance.
2.0.5
2021-04-25
New graph mode: sequence.
Improve graphing graphics.
Improved external keyboard support.
1.2.2
2020-12-22
Box plot and histogram support frequencies.
Drag to reorder custom functions.
Improve "sum" and "prod" functions.
1.2.1
2020-12-06
Added ref() function
Added TVM Solver and related functions
Improved 1-VarStats, CubicReg and QuartReg
Fixed STATPLOT was disabled in iOS 14
1.2.0
2020-10-20
Noninteger frequency is accepted in 1-VarStats and 2-VarStats.
Piecewise graph is supported.
Improved regression calculation speed.
1.1.9
2020-09-08
Changeable display font size.
Improve big number calculation.
1.1.8
2020-09-02
Added some zoom commands: ZoomStat, ZStandard, ZSquare
Inequality graph is supported.
Fixed some problems which cause app crash.
1.1.7
2020-08-16
In the update, we introduce a new feature: instant result. Now you can see the result when you are typing. We also fix relative problems which cause the app crash.
Thanks for all feedback. We always work hard to improve this app. We really appreciate any suggestions.
1.1.6
2020-08-12
Fixed crash
1.1.5
2020-08-07
Fixed crash when press ENTER
1.1.4
2020-08-03
New regression models: logistic and sin regressions
Stat wizard
1.1.3
2020-07-20
Expression details: integer, numeric, complex, matrix, list, vector, graphic.
Improve Chi square test
Improve numeric calculation for really small number.
System of equation solver is improved.
Change rounding mode from banker to half up.
Graph features: box plot, inflection point.
1.1.2
2020-05-11
Create your own functions.
nth root will return real number.
1.0.2
2020-04-30
Improve graphing feature.