Techware offers several licensing arrangements for our software products including Single User Licenses, Multi-User Licenses and Company Licenses.

Single User Licenses

Single User Licenses are designed to be installed on a single computer.  The installation requires administrator privileges and installs a software licensing code which allows all users on that computer to have access to the software.

Quantity discounts are offered for purchases of more than one single user license.  The following table displays the current single user license pricing.  Prices are per unit.

Product      Quantity   
Name Product ID 1 2 - 9 10 - 24 25+
WinSteam WS4 $449.00 $399.00 $299.00 $199.00
@Air AA4 $299.00 $249.00 $199.00 $149.00
@Gas AG4 $449.00 $399.00 $299.00 $199.00
XLInterp XI4 $149.00 $129.00 $99.00 $79.00
@Gas + @Air GAC4 $599.00 $499.00 $399.00 $299.00
DeskTop Set DTS $1048.00 $898.00 $698.00 $498.00
DeskTop Steam DS4 $99.00 $99.00 $99.00 $99.00
DeskTop Air DA4 $99.00 $99.00 $99.00 $99.00
DeskTop Gas DG4 $99.00 $99.00 $99.00 $99.00

Single User License Pricing Notes:

  • The WinSteam package includes DeskTop Steam.  You may purchase DeskTop Steam, the interactive steam calculator separately if you do not need the spreadsheet add-in functions.
  • The @Air package includes DeskTop Air.  You may purchase DeskTop Air, the interactive air calculator separately if you do not need the spreadsheet add-in functions.
  • We offer a discount when you purchase @Gas and @Air together as there are some areas of overlap between the two products.
  • The DeskTop Set includes WinSteam, @Gas, @Air and XLInterp.  If you are considering to purchase WinSteam, @Gas and @Air, choose the DeskTop Set for the same price; it's like getting XLInterp for free.
  • The quantity discounts apply to the current order and are not cumulative, however, we will extend the quantity unit pricing for future orders placed within 6 months from the previous order.
  • All prices shown are one time charges.  There are no other fees or annual charges for continued usage.

Multi-User Licenses

Techware offers multi-user licenses for most of our software products.  These are not network versions of the software that control the number of simultaneous users.  Multi-user licenses employ the same software as the single user licenses; the only difference is the terms of the license.  With a multi-user license you receive a single pair of serial and authorization numbers and the license indicates the number of computers on which you are permitted to install the software.

Multi-user licenses are sold in increments of five users.  Current pricing for multi-user licenses is as follows:

Users WinSteam @Gas @Air XLInterp @Gas + @Air DeskTop Set
5 $1,795.00 $1,795.00 $1,125.00 $580.00 $2,250.00 $4,045.00
10 $2,690.00 $2,690.00 $1,800.00 $890.00 $3,600.00 $6,290.00
15 $3,510.00 $3,510.00 $2,400.00 $1,190.00 $5,400.00 $8,910.00
20 $4,180.00 $4,180.00 $2,800.00 $1,490.00 $6,300.00 $10,480.00
25 $4,475.00 $4,475.00 $3,375.00 $1,800.00 $6,750.00 $11,225.00
each add'l 5  + $895.00 + $895.00 + $695.00 + $360.00 + $1,350.00 + $2,245.00

Software Upgrades

Upgrades for versions 3.0, 3.1 and 3.2 of WinSteam, @Air and @Gas as well as versions 1.1 and 1.2 of XLInterp are available for a price of $99.00 each.  Upgrades from older versions are available for $149.00 each.  

Company Licenses

Larger users who wish to install any of our software products on many or all of their computers may be interested in our Company License.  This license allows the software to be installed on any number of computers owned by the company purchasing the license for use by company employees.  The Company license agreement includes an initial fee plus an annual fee.  All upgrades and support is included in the pricing.  Contact our sales department for a quotation.


All of our software products can be downloaded directly from this site.  There are no shipping, handling or media charges for downloaded software.  You can save the downloaded file for future re-installation or else download another copy at any time.  All Versions that you have downloaded from our website will always be available for future downloads.

All prices stated in our pricing section are for downloaded software.

Go ahead and download the software packages you want right now and start using them immediately.  When installing the software, you will be given a choice to register with your serial number or run it as a demo.  Press the "Demo" button and you will have full access to the software for 30 days.

When you are ready to purchase the software go to our Order page where you can find several oprtions for ordering.

Purchase orders are accepted from major US corporations with payment terms net 30 days.  Please provide software name, product number, quantity, shipping address, billing address, contact name and telephone number with your order.  Be sure to include the original serial numbers for each upgrade product ordered.

If you would like us to send you  a written quotation by e-mail or fax, contact our sales department.