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Calculator

2.8 out of 5 stars 38 customer reviews


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Product Description

Now a calculator can be with you wherever you travel. Use Calculator for Kindle to make those quick, every-day calculations like computing sales discounts, double-checking an invoice, or computing a restaurant tip.

In addition to basic math operations, Calculator also includes Square Roots, percentages and exponents, and the trigonometric functions Sine, Cosine, and Tangent. You have standard calculator Memory Functions, and you also get Calculator History; in which the last 10 items and last 10 calculation results are saved for later reference.

Calculator offers keyboard shortcuts to help you work quickly, and a last function undo and digit by digit undo functions to help you correct errors. Help pages explain each feature, and a Shortcuts List page clearly lists all shortcuts.

Now you can do all your calculations on Kindle.

Product details

  • Version: 1.0
  • Release Date: May 24, 2011
  • File Size: 117 kB
  • Language: English
  • Publisher: 7 Dragons
  • Sold by: Amazon Digital Services LLC
  • ASIN: B004XN70ZI
  • Publisher License: Read
  • Average Customer Review: 2.8 out of 5 stars 38 customer reviews
  • Amazon Best Sellers Rank: #526,615 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
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Customer reviews

Top customer reviews

By Ed Pegg Jr VINE VOICE on May 29, 2011
Verified Purchase
Calculator by 7 Dragons (this page) is an alternative to Easy Calculator by Mobigloo, for calculators on the Kindle. I decided to check it out.

You'll likely do better ignoring any written reviews, and looking at the screenshots that are provided for each program. In those, you'll be able to see the layouts that are provide.

This program (Calculator)
PRO - Has Sin, Con, Tan, x^y
CON - Only one line of output and tracking.
CON - A history exists, but it's on a separate page, and multiple clicks are needed to leave it.
CON - does not follow default Kindle numbers.
CON - Placement of function keys non-intuitive

The competeing program Easy Calculator
PRO - Multiple lines of history provided.
PRO - Follows Kindle numbering.
PRO - A (add) S (subtract) X (Times)
CON - No trig functions.

For the moment, I'll give the nod to Easy Calculator. I like the layout and the onscreen history better.

But look at the screenshots, and make your own decision for which layout you prefer.
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I am always doing percentage calcs (I am a cheapskate) this calculator is a must have for those on a tight budget (who isn't nowadays). It is the easiest I have ever seen. No calculating percentage then doing another calculation for final answer. The percentages are automatically entered into the one calculation for the final answer... It also, allows long string calculations.

Example:4+7+22-9=24 (keys used: afqfxxge=24) also, 256-25%= 256-64=192,the 25% is auto converted and entered in calculation, neat..

The keyboard is well designed and easy to use. It has a history function that you can review past calcs. Reminds me of the old tape calculators and very handy. Also, for those so inclined, it has trig functions and a square rooter with 15 decimal places.

And, a very big plus, it has a 13 page well written instruction manual (l on keyboard).

This is a must have for grocery shopping on a tight budget....
Best $.99 investment you can make....
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I have a Keyboard Kindle and purchased both the Easy Calculator by Mobigloo and this Calculator from 7Dragons.

Both make use of Kindle Keyboard's Five-way paddle to move a cursor and enter in numbers. Or, you can simply use the keyboard to directly punch in numbers (provided you get comfortable with where they are mapped out.)

At first glance, I have to give a slight edge to 7Dragons' calculator. The layout makes it a bit easier and faster to move and enter numbers with the Five-way paddle. Plus, it gives you a history of all your calculations. Mobigloo's gives you an adding machine tape-type readout of all numbers entered).

I bought both. At .99 each, it's not breaking the bank. I'll use both to see which is more comfortable. This comes with time.

In the office, my calculator is always being misplaced. Bottom line, it's nice to have a calculator on my Kindle.
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Is there something glitchy about getting a decimal? From the keyboard layout, it looks like the alt key should produce a decimal, but it doesn't seem to. Also, looks like the "space bar" should be delete, but it doesn't seem to. I am not likely to use the trigonometric functions, but they seem to be on the row under the alt key. No intuitive way to get to those keys.

I am a bit perplexed. I would say that the calculator does not seem intuitive in some ways, But, perhaps the programmers can provide some help, in which case, I may upgrade my review.

I read over the instructions quickly, and I did not find answers to these questions. Perhaps it takes more time. But, should it?
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I Have not ordered or inquired about this item I know nothing about it so there will be no reciew or critique of this item that would be unfair to the manufacturer
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The calculator I ordered was for the older Kindle (not Kindle Fire), and it was too difficult to figure out the letters which would represent the number. I tried to cancel it, but I think I was too late. It was only .99, so not a big deal, however it was not what I wanted, mainly because I didn't check it out first.
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I wanted just a plain simple calculator and this one is not simple.
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Pretty nice and fairly advanced.
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