Inseries: Smart Calculator4.0.1 - App Store

The smart, modern, and elegant calculator app - optimized for multi-touch
* Easy, logical entering of calculations and clear history of previous results
* Built-in calendar functions (e.g., number of days between two dates)
* Naturally adding and subtracting percentages (e.g., 99+20% taxes or 79-30% discount)
* Gesture support for fast access to previous results and memory

Inseries is the slightly different professional calculator app that allows you to naturally enter calculations and clearly browse your previous results. Simply type in "100+20%" to add taxes, or "100-30%" to easily calculate a discount. Inseries even shows you "pi" as a real constant instead of just a number.

Inseries' clear user interface is designed for multitouch allowing us to come by with a small and simple keypad based on the clear keypad layouts of typical financial and business calculators. By using choosers for quickly accessing functions and constants we could bring in scientific calculator functionality without sacrificing usability.

Intelligent professional calculator
* Fast access to common, date, and scientific functions and constants
* Natural adding and subtracting of percentages
* Quick-sum function for fast adding of multiple numbers
* Real random value generator for rand() function

Simple and clear user interface
* Easily enter calculations in a spreadsheet-like way
* Copy results and paste support for calculation field
* Fast switching between all, 2, and 4 fraction digits
* Swipe-gestures for storing, recalling and clearing memory

Persistent calculation and result history
* Built-in database for previous calculations and results
* Back-functionality for going back to previous calculation
* Persistent settings, e.g., for fraction digits mode
* Variable-style access to memory ("M") and result ("R")

Version History Inseries 4.0.1 fixes some bugs and of course includes all the improvements of Inseries 4:

- Updated calculation engine with increased accuracy and reduced rounding errors
- Long numbers are now automatically displayed in scientific (“E”) notation for improved clarity
- The secondary function of the CLEAR button now provides CM (Clear Memory), as this is used more frequently than the previous ALL (Clear All) function 4.0.1 Jul 7 Inseries 4 includes several notable improvements:

- Updated calculation engine with increased accuracy and reduced rounding errors
- Long numbers are now automatically displayed in scientific (“E”) notation for improved clarity
- The secondary function of the CLEAR button now provides CM (Clear Memory), as this is used more frequently than the previous ALL (Clear All) function 4.0 Mar 3 Subtle improvements to better fit new iOS design. 3.7 10/13/2025 Beside general usability improvements and minor bug fixes, Inseries 3.6 comes with the following new features:

- New year-month-day ("YM") format for date calculations
- Extended result field context menu featuring memory operations
- Improved copy & paste functionality 3.6 08/28/2025 Performance improvements and bug fixes. 3.5.1 09/10/2022 Inseries 3.5 provides bug fixes and stability improvements. 3.5 03/01/2022 Inseries 3.4 includes some under-the-hood improvements. 3.4 11/19/2021 Inseries 3.3.1 provides a couple of usability improvements and bugs fixes. 3.3.1 03/14/2021 Inseries 3.3 makes our smart calculator app even better through a number of bug fixes and usability improvements. 3.3 02/09/2021 Inseries 3.1 fixes a few bugs and of course comes with all the nice, practical new features of Inseries 3:

- New operators for factorial, (square) root and exponentiation
- Extended and also simplified date calculations
- Actual Greek symbols for constants such as π
- Improved, more consistent swipe gestures 3.1 05/06/2020 Welcome to Inseries 3! Inseries has been rewritten from the ground up using Swift and now also supports Dark Mode!

Inseries 3 comes with many great, practical new features:

- New operators for factorial, (square) root and exponentiation
- Extended and also simplified date calculations
- Actual Greek symbols for constants such as π
- Improved, more consistent swipe gestures

Additionally, we also further optimized the keypad layout and improved overall calculation error handling -- we hope you like the new version as much as we do! :-) 3.0 12/14/2019 Inseries 2.0 provides a number of significant improvements over previous versions of our smart calculator app:

- New, simplified keypad that makes various input tasks a lot easier through 2nd functions via long-pressing a key — especially entering hex numbers and accessing the most common constants (pi and e)
- More clear representation of past calculations through color coding and more natural operator characters for multiplications and divisions
- Faster way to perform date calculations: you can now easily add days to a date via the standard ‘+’ operator and calculate the number of days between two dates by subtracting them from each other

And finally (we know, long overdue): native support for iPhone 6 and iPhone 6+ screen sizes. Hope you enjoy the new update! 2.0 06/30/2015 1.6 03/06/2014