---
title: "Scientific Calculator DES-38D - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "The DES-38D is an easy-to-use, multi-line Scientific Calculator with intuitive, left-to-right data entry & display.  It was designed and developed by a professional engineer with a variety of features"
---

# Scientific Calculator DES-38D — United States
> Scientific & Logical Functions

![Scientific Calculator DES-38D App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/f2/5d/a8/f25da82e-5f53-3632-5d59-545313bf6dcb/AppIcon-1x_U007emarketing-0-7-0-85-220-0.png/400x400bb.png)

**Developer:** [Dohmann Engineering Services](https://apptail.io/developer/dohmann-engineering-services-XuM)
**Category:** Utilities
**Rating:** 4.3/5 (3 ratings)
**Price:** Free
**Bundle ID:** com.dohmann.SciCalc38D
**Store:** Apple App Store
**Country:** United States
**Version:** 1.10 (released 2024-12-18)
**Original Release:** 2018-05-27

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1379779839)
**AppTail Page:** [https://apptail.io/app/scientific-calculator-des-38d-Veed/united-states](https://apptail.io/app/scientific-calculator-des-38d-Veed/united-states)

## Scientific Calculator DES-38D Description
The DES-38D is an easy-to-use, multi-line Scientific Calculator with intuitive, left-to-right data entry & display.

It was designed and developed by a professional engineer with a variety of features to suit the needs of engineers and mathematicians, including extensive statistical analysis & graphing capabilities. However, it is extremely simple to use and is suitable for anyone who needs an advanced calculator.

The name of the DES-38D calculator comes from the fact that it utilizes base-10 arithmetic which can represent numbers with a 38-digit mantissa and an exponent range of -128 to + 127.

The DES-38D is universal app that is fully functional in both portrait and landscape modes on all iPad and iPhone devices. No need to rotate to landscape unless you need a wider display area.

All current and future features are included for one low price. We will never nag you for more money.

KEY FEATURES:
• Supports Hex, Binary, and Octal number bases in  64-bit, 32-bit, 16-bit, or 8-bit word lengths
• Accepts data entry in Decimal, Scientific, or Fractional notation (& they can be mixed)
• Memory and Result data can be displayed in Decimal, Scientific, or Fractional notation independently of how the equation was entered
• Angle entry and computations can be performed in degrees, radians, gradians, or turns
• 10 Memory Registers
• 4 Display Lines: Equations, Result, current Memory Register, and Error/Information Messages
• All Display Lines read in normal human, left-to-right form
• The [-] key can be used for subtraction or negation as you type - no need to use the [+/-] key after the fact (although you can)
• All equations are evaluated, and the Result field is updated "on-the-fly" as you enter your formula. The [=] key merely saves the equation & result to the History/Tape file
• All Equations & Results are saved in a History/Tape file
• Equations & Results can be recalled from the History/Tape file for reuse in other equations
• Sliders to rapidly adjust Display Precision, Decimal-to-Scientific notation switching, and Decimal to Fraction notation switching
• Keys for e and π plus a table with many additional scientific and mathematical constants that can easily be included in equations
• Extensive built-in help screens
• Copy and paste with simple tap and long touch gestures
• Use swipe gestures to rapidly display all Memory Registers at once, all Constants, and the History/Tape file
• Fast and simple advanced statistics functions - simply enter a data set and instantly get over 90 statistical calculations including 8 different regressions as well as a graphic plot of the regression lines
• Up to 10 Statistics Data Sets with the ability to import CSV files and print, email, or share Data Sets and Calculation Results
-------------------------------
LIST OF MATH & LOGIC FUNCTIONS

• Add, Subtract, Multiply & Divide (of course)
• Floored and Euclidean Modulus
• Percentages - including Percentage, Add-On, Discount, and Ratio calculations
• Square, Cube, and nth roots
• Square, Cube, and nth powers
• Base-10, Base-2, Base-n, and Natural Logarithms
• 24 Trigonometric Functions
• Combinations & Permutations
• Coordinate Conversions between Polar & Rectangular
• A number of Random Number Generators to simulate coin flips, dice throws, card draws and general purpose random numbers
• Reciprocals
• Factorials & Double Factorials
• AND, NAND, OR, NOR, XOR, XNOR, NOT
• Shift and Rotate Bits
* Advanced Statistics with over 90 statistics values including the results of  8 different regressions plus graphing capability
-------------------------
We welcome your feedback. The app includes an email option to send comments or suggestions to us at support@dohmann.com

If you enjoy our app, please rate and review us in the App Store. 

Thank you for using DES-38D.

## Scientific Calculator DES-38D Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/6f/d5/c4/6fd5c4d0-4329-a60f-cc3e-26f77a954753/979e479b-d0f4-48c4-932d-c93c8e7f44f8_vert.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/1a/1d/65/1a1d65d5-3f2c-acb2-e948-2646c0657869/1d50ed83-14b4-4127-84bf-fe6f11166429_horiz.png/2688x1242.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/0f/2d/cd/0f2dcd07-3603-d72d-c4b6-1195b9c21798/20ec86dc-85fa-432b-9a82-25fd23c5a3e4_vert_H64Logicals.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/4d/8d/9c/4d8d9c9d-eae8-fdbe-3456-23a8777b9325/cf473326-d19c-4d00-a4d1-2c29a13b276d_vert_B16Logicals.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/24/89/31/248931b2-c8d2-8987-06f6-823fb2fcaeec/9a8f72e5-1fd9-4458-aec7-46f4cde5f015_vert_StatData.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/5a/7b/98/5a7b9859-3a09-cc42-153a-c1d8c7be7780/d1450ab2-8897-47a3-b3d8-3a10376776ea_vert_StatChart.png/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource123/v4/98/91/50/98915023-6a57-6e7d-81a8-2731075f21c4/bf1f6ed0-cf5c-423c-9ac1-9af8779ce91c_vert_Help.png/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/54/c9/96/54c996ed-4aa2-b6a0-6242-a278523b87b9/05e3d9df-c8ac-476e-9197-37cef8dddd44_vert_StatDocs.png/1242x2688.png)

## Scientific Calculator DES-38D Rating Breakdown in United States
- 5 stars: 2 (67%)
- 4 stars: 0 (0%)
- 3 stars: 1 (33%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## Scientific Calculator DES-38D Reviews in United States

### ***-- "Waste of money"
Bought this to help with studying radicals.  Root index will only show as a “4” no matter what you type in as the index!  Layout is not intuitive
-- jgchgccj, 2021-12-29

[View all Scientific Calculator DES-38D reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## Scientific Calculator DES-38D Available In
- [United States](https://apptail.io/app/scientific-calculator-des-38d-Veed/united-states)
- [United Kingdom](https://apptail.io/app/scientific-calculator-des-38d-Veed/united-kingdom)
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---

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