# Calc For Coders Lite — Hex & Scientific Calculator

> Scientific calculator with base conversion, trigonometric functions, and customizable interface. (iPhone/iPad app by Richard Silverman.)

- Source: https://appshunter.io/ios/app/calc-for-coders-lite/id306579427 (this page in markdown: same URL + `.md`)
- Developer: [Richard Silverman](https://appshunter.io/developer/297096643)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 3 MB
- Languages: English, French, German, Italian, Russian
- Released: 2009-03-27
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/calc-for-coders-lite/id306579427/reviews.md

## What is Calc For Coders Lite?

Paper Calc for Coders is a decimal, hex, octal & binary conversion calculator that includes 25 trigonometric functions. Other features include a full screen view of the paper tape,  two color schemes, and a re-sizable keyboard. 

This is the full version of Paper Calc for Coders but with a limit of 8 lines of paper tape. Specifications shown are identical to the full version except for the 8 line limitation of displayable paper tape.

Find 'Paper Calc for Coders in the App Store for the full version.

Paper Calc Specifications:
================
Please see the FAQ for left/right handed use of the base-conversion key.

► 8 line paper tape history
.   - PRINT (requires iOS4.2 & an AirPrint printer)
.   - EMAIL
.   - add comments
.   - timestamp
► Animated base 16, 8,and 2 keyboards for math, logical and shift operators (see FAQ below)
► Full-screen view of the paper tape (right-side scroll page)
► Two color schemes
► Grab a number on any line and bring it into the current calculation (better than RPN)
► 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.

================

FAQ:

Q1. How do I create my own custom keyboards?
A1. Touch the keyboard icon to go into Keyboard Edit Mode. Touch keys to make it any one of three different key sizes (space must be available to the right for a double-size key). Hold and move a key to reposition it. Hit the left wall with a key to blast it through to the Trig keyboard. Press "Cust 1,2,3" to Save. Press Again to Rename the button. Touch the left-side black box to exit Keyboard Edit Mode.

Q2. How do I use the Base Conversion key?
A2. Follow these guidelines:
   ► 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.

   ► 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.

   ► Select the 'D2' (Default 2) keyboard if you do not want the base conversion key on your main keyboard.

Q3. How do I use the % key?
A3. 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.

Q4. How do I access and use the 10 memory locations?
A4. 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.

===============================

TERMS AND CONDITIONS
Your use of this application is governed by Interlocken Technology's Terms of Use (http://InterlockenTechnology.com/InterlockenPrivacyPolicy/InterlockenTechnologyTermsOfUse.pdf) and Privacy Policy (http://InterlockenTechnology.com/InterlockenPrivacyPolicy/Interlocken Technology Privacy Policy.pdf)

## Key features

- Decimal, Hex, Octal, Binary conversion
- 25 trigonometric functions
- Full-screen paper tape view
- Customizable keyboards
- Multiple display formats
- 10 individual memories

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/calc-for-coders-lite/id306579427/reviews.md

### 5/5 — Great app

*2016-03-03*

This app is really great. I use it for my mathematical problems while programming.

### 1/5 — OK For Short Calculations

*2011-02-11*

Works OK for short calculations but runs out of tape if you have any more than six calculations to do.  Also, does not feature a  "back" key in case of an entry error.  This app was of no use to me in its present format so I deleted it.

### 4/5 — Cool

*2009-11-09*

Love the way you can add comments to the tape and use numbers from the tape. Who needs memory. 
Only limitations are there's no scientific functions and the paper tape is limited to 4 lines. But, it is the free version.

## Frequently asked questions about Calc For Coders Lite

### How do I create custom keyboards in Calc For Coders Lite?

To create custom keyboards, enter Keyboard Edit Mode by touching the keyboard icon. You can then resize, reposition, and save keys to custom slots. Pressing 'Cust 1,2,3' saves your layout, and pressing it again allows you to rename the button.

### How does the Base Conversion key work in Calc For Coders Lite?

Tap the base conversion key to cycle through Decimal, Hex, Octal, and Binary keyboards. Holding down the key brings up a menu to select a specific keyboard. For right-handed users, hold the right side; for left-handed users, hold the left side for appropriate menu placement.

### What are the different display formats available in Calc For Coders Lite?

Calc For Coders Lite offers three display formats: floating point, engineering (powers of 3), and fixed point (with 2 to 8 decimal places). This allows users to view calculations in the most suitable format for their needs.

### Can I print or email my calculations from Calc For Coders Lite?

Yes, Calc For Coders Lite supports printing calculations if you have an AirPrint printer (requires iOS 4.2 or later). You can also email your calculation history directly from the app.

### Does Calc For Coders Lite have ads?

No, Calc For Coders Lite does not contain advertisements. As a free utility app, it provides an uninterrupted user experience without any ad interruptions.

### What is the paper tape history limit in Calc For Coders Lite?

Calc For Coders Lite features an 8-line paper tape history. This allows users to review recent calculations, and the full version, 'Paper Calc for Coders', offers unlimited tape history.

### Is Calc For Coders Lite available on Android devices?

Based on the provided data, Calc For Coders Lite is supported on iPhone and iPod. There is no information indicating its availability on Android devices.

### How often is Calc For Coders Lite updated?

The last update for Calc For Coders Lite was on March 4, 2021, with version 5.20.05. While the exact update frequency isn't specified, this indicates it receives periodic maintenance and feature additions.

## Version history (last 5 releases)

### 5.20.05 — 2021-03-04

Version 5.20.05:
. name change to Calc For Coders Lite

version 5.20.03:
. full support for iOS 12 and higher
. this is a free version.

### 5.20.03 — 2021-01-18

. full support for iOS 12 and higher
. this is a free version.

### 5.01.01 — 2017-11-01

1. New keyboard artwork.
2. Second, default, keyboard now places all base conversion and trig functions on the main keyboard. To use this keyboard, touch the keyboard icon, then select '1Kybd' from the choices offered. Or make your own keyboard layout and save as 'Cust 1, 2, or 3'.
3. Improved HELP text
4. Default color now set to 'Light'. Select the 'Dark' option, if desired, on right-side scrollview.

### 4.01.01 — 2017-10-08

Updated for iOS10 & 11.

### 3.81.00 — 2014-10-29

1. Repaired degree (o) and radian (rad) symbols on paper tape
2. The 'Grab Number' menu has been improved. Insertion of a number into your calculation is easier than ever.

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## More apps by Richard Silverman

- [Calc For Coders](https://appshunter.io/ios/app/calc-for-coders/id297096640)
- [Paper Calc Office](https://appshunter.io/ios/app/paper-calc-office/id328576488)
- [Paper Calc Office Lite](https://appshunter.io/ios/app/paper-calc-office-lite/id347713516)
- [Accountant Calculator](https://appshunter.io/ios/app/accountant-calculator/id374945395)
- [Adding Machine 10Key iPhone](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834)

All apps by Richard Silverman: https://appshunter.io/developer/297096643

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*