Our Kindle Calculator App is now out. It’s $1.
You can find downloadable help files at the Kindle Calculator Help Page. The app itself has a comprehensive help section – Press Menu and then choose Help.
You can find a few videos at the Kindle Calculator Videos Page. Have to replace these with better ones but these do a decent job of showing the Calculator’s features and walking you through how to use the “%” function to calculate tips and discounts and totals.
Should you buy Calculator?
Well, the first thing to know is that the Kindle comes with a very basic Calculator built-in. You can just type 345*32 on the Home Page and press Enter. The first search result on the Search Results page will be the answer. So, if you can get by with this, then you don’t need Calculator.
Reasons for buying our Kindle Calculator App:
- It’s very simple to use. You can use a NumPad layout for typing numbers OR you can use the cursor OR you can use number keys (if you have a Kindle 2). You can press Space or Enter or the ‘=’ button to calculate a result. So, no worrying about SYM and Alt+QWERTY.
Keyboard Shortcuts for Numbers are in a NumPad layout:
7 8 9 Q W E
4 5 6 A S D
1 2 3 Z X C
- It’s Fast. Calculator uses zero images so it’s small (just around 100 kb in size) and very fast.
- It’s Flexible. Since there are no fixed images there is a lot of customization possible – Choose from 3 font sizes, go with either of 2 themes (black or white), and either display keyboard shortcuts on the buttons or hide them.
- It’s Forgiving – We built it so it doesn’t punish mistakes. If you type in a wrong calculation or want to go back to a previous step – simply use the special Undo feature that walks you backwards through your calculations. Example: 23*25=575, then 575+200=775, and finally 775-155=620. If you want to go back and change what you added to 575, just press Undo button (U key) three times to get back ‘575+’. Then you can add whatever you intended to add. You can also use DEL key to do digit by digit Undo.
- Tired of being able to save just one number in Memory? Our simple solution is to have a Calculator History page that displays the last 10 calculation results and the last 10 numbers saved in memory. It makes things a lot simpler. Calculator History page keeps these 20 numbers available for next time if you exit the app.
- It’s Friendly – The App itself has a Help section that explains each function and a Shortcuts List section that lists all the shortcuts. The downloadable documents at the Help Page listed above can be read on the Kindle (choose the Kindle format files) or on a PC or Mac (choose PDF or Word).
- Full Support – Leave a comment here or at our Kindle App blog (the two links above) or email us (App has the email listed on About Page). We’ve taken pains (such as writing Help documents and shooting videos) to explain how to use Calculator features and will be glad to answer any questions.
Kindle Calculator is well worth a shot.
Things Kindle Calculator is Not
- It’s not free. It took time to get all the little features like History and Keyboard shortcuts in, and to make it work with different fonts and themes.
- It’s not a scientific calculator – The only functions supported are +, -, *, /, x^y, 1/x, square root, %, sine, cosine, tangent, and memory functions.
- It’s not a graphing calculator.
- It’s not form over function. So there are no animated page turns or wooden shelves or photos of butterflies. We had a unicorn but it ran off with a zebra.
- It’s not infallible. It’s V1 and there might be some eccentricities and some obvious things you think a Calculator should have, that it doesn’t have. Let us know and if possible we’ll add them in a later release.
Credits for Kindle Calculator
Andriy Kanyuka – Developer & Idea of making it without Images. The speed and simplicity and ability to transform (themes, fonts, display shortcuts or not) is all because Andriy managed to make a Calculator that doesn’t use any images at all. We gave Andriy a PSD (Photoshop File) of what the Calculator should look like and he did the design without using the image – which you have to admit is pretty cool.
Maurine – Quality. Maurine made sure everything worked and worked better and was simpler. All the Help documentation and the in-app Help and Shortcuts List are also thanks to her. It’s great because it lets you get the most out of your Kindle Calculator.
Chetan Sachania & Sergey Shevchenko- Design.
Lorraine & Tony – Beta Testers. Thanks a ton to Lorraine and Tony who volunteered their time and gave us some excellent suggestions and found lots of bugs. You can thank them for us adding in a larger font size, removing a lot of extraneous things from the main view, and fixing a lot of bugs which would otherwise be swarming all over your Kindle (and maybe even all over your hands).
Amazon – Lots of Improvements including faster cursor speed, using the NumPad layout for numbers, and using intuitive keys like Enter and DEL intuitively.
Me – The idea of adding an Undo feature and a History Page and a white theme (in case you prefer vanilla ice cream). Guarding the wagons against the Vampire Apaches.
Thanks for reading through this. With Notepad and Converter and Calculator we are steadily adding the Kindle apps we think Kindle owners would find most useful – most of the big ones are still in the works so do stay tuned.
Finally, thanks a ton to the bloggers that have written about Kindle Calculator –
- Andrys at Kindle World.
- Steve at Kindle Nation Daily.
- Kindle App News.
Their help is greatly appreciated.