Discount Spreadsheet

3 08 2018

You find lots of sophisticated and powerful apps in Apple’s App Store. Some of them are shining examples for simplicity and plain design and follow the KISS principle (Keep it simple, stupid).

One of them is

Discount Spreadsheet by Luminant Software, Inc.

It got an updated UI
and a long awaited new keyboard in July 2018.

The app is simple to use, restricted to the basic needs of a spreadsheet application and lets users focus on relevant tasks. No bells and whistles.

These kind of apps can be effectively used to teach and discuss simple things with young people. It’s a first step to improve knowledge and knowledge is the basis of creativity. Transferring knowledge and initiate further discrete thinking seems to be easier than ever because mobile devices initiated a shift in paradigm of teaching and learning. It’s because a touchscreen is much nearer to human activities than any other device or textbook could ever be. What we do is mostly what we do with our hands. It’s our first approach to new things.

Lots of developers implement more and more features into their apps but only apps like Discount Spreadsheet are perfect for explaining and learning the basics of creating spreadsheets.

Learning targets could be …

learn the common actions cut, copy, paste, undo and redo which are provided by all operating systems

build a sum with cells in a column or row

enter a simple expression where the arguments are cells

insert or delete rows/columns and see that a spreadsheet app automatically adjusts the cell coordinates in a formula to new appropriate rows/columns

create a graph

access the iOS app specific folder via a browser by using a http address


Try it out and you’ll think twice before you use the turbocharged apps Apple Numbers or Microsoft Excel.

Thanks for reading.

Calendar Attachments

17 04 2018

In some cases I’d d like to add one or more attachments to a calendar event, e.g. a JPEG, a PDF, a Pages, or an Excel document with more detailed information about it.

In my example I added the application form (PDF) to prolong my retirement visa for Thailand.

This is neither an option in Apple’s app Calendar nor in the calendar feature of Microsoft’s app Outlook. Only Google Calendar provides an option to add an attachment (from Google Drive) regardless of its file format.

Dear iOS developers,

please implement an option to add an
attachment via Files to calendar events.


If you would also like to see this feature in an updated Calendar app please send feedback on

Apple Feedback

Thanks for visiting my blog.

Hey Apple!

19 08 2017

Electronically signed documents are legally invalid in most countries of the world.

And there is even more.

  • Sending a document as an attachment to an unencrypted mail is like an invitation for bad boys to use the signature done with the  Pencil.
  • Using it for business purposes would also require to keep it accessible over 5 to 10 years. But where’s your document management and digital archiving support?

No, no.

It’s not that easy you want us to see this feature.

Thanks for dropping by.