App Freshness



Richard Silverman
Paper Calc – calculator with printer tape
Post Date:
2017-10-22 08:38:43

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PaperCalc with Apple AirPrint support –
A 25-function scientific calculator now with hex, octal & binary keyboards, a full screen view of the paper tape, two color schemes, 250 lines of EMAILable virtual paper tape, a re-sizable keyboard, and more….

Please email with errata if any are found. We will respond immediately….thanks!!

New in this release:
✓ AirPrint support (requires iOS 4.2).

In recent releases:
✓ Animated hex, octal, & binary keyboards
✓ Full-screen view of the paper tape (right-side scroll page)
✓ Select from two color schemes

Double-tap on the calculator’s LCD display to clear the paper tape. A single button controls floating, engineering (power of 3), or fixed-point number formatting. Another selects the base (10, 16, 8 or 2). The most often used functions are on the main keyboard or scroll to the left keyboard for 25 scientific functions. There are 10 individual memories. Grab a number on any line for use in your current calculation. Select from 2 supplied keyboard layouts, or, create and save up to 3 custom layouts of your own.

Paper Calc requires iPhone OS3.1 or greater. Also see Paper Calc Scientific for Apple Pasteboard support, adjustable line-spacing and font-size.

Paper Calc Features:

✓ 250 line virtual paper tape
. – PRINT (requires iOS4.2 & an AirPrint printer)
. – add comments
. – timestamp
✓ NEW: Animated base 16, 8,and 2 keyboards for math, logical and shift operators (see NOTES below)
✓ NEW: full-screen view of the paper tape (right-side scroll page)
✓ NEW: two color schemes
✓ grab a number on any line and bring it into the current calculation
✓ slide the numeric LCD to resize the keyboard
✓ very fast powerOn – no waiting
✓ create and save custom keyboards
✓ three different display formats:
. – floating point
. – engineering (power to multiple of 3)
. – fixed point (2 to 8 places)
✓ 10 individual memories with color indicators
✓ International number formatting (Settings -> General -> International -> Region Format -> select region)
✓ 25 scientific keys include all standard trig and hyperbolic functions, gamma (x!), y^x, x^2, sqrt, y^(1/x), 10^x, e^x, log, ln, logy/logx, e, pi, and random number. Trigonometric domains include both radians and degrees, or, convert between them.


Notes on Base Conversion:
1. Tap the base conversion key to rotate among Decimal, Hex, Octal, & Binary keyboards, or, hold down on the key to select from a menu of the four.
2. Right-handers should hold down on the right side of the base conversion key. Left-handers on the left. The menu will pop up on the left or right side appropriately.
3. Select the ‘D2’ (Default 2) keyboard if you do not want the base conversion key on your main keyboard.


A few notes based on feedback from users:

1. Custom keyboard layout: Each key can be any one of three different key sizes. To make the double-sized button, make sure the space to the right of the button is empty. Then, when you tap on the button, it will go to double size.

2. 10 ea. memories: Press the ‘mem’ button first. Then select one of the yellow keys (clear, store, recall, add, sub). Finally, press the memory location (0-9 buttons) to operate on.

3. There are two ways to use the % key:

✓ 1st: Obtain the % of number: Press ‘200 % 5 =’. Answer will be ’10’. PaperCalc took 5% of 200.

✓ 2nd: The % of a number is used in the operation on the number: Press: ‘200 – 5 % =’. Answer will be ‘190’. PaperCalc subtracted 5% of 200 from 200.


  • Paper Calc – calculator with printer tape Screenshot
  • Paper Calc – calculator with printer tape Screenshot

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