Buy a license

The basic functionality of Simple Data Logger is available for free for personal, non-commercial use (see EULA). A paid ‘Basic’ license is required for all other purposes. A ‘Plus’ license which enables the entire functionality of the software is also available. Click here to see the features only available with a Plus license.

Perpetual licenses

Please click on one of the buttons below to continue to our reseller FastSpring (your license and invoice will be created automatically).

*plus VAT or sales tax, where applicable. Click buttons to see prices in your local currency (if supported).

These licenses are perpetual (i.e., they don’t expire) and include two years of free updates.

90 days license

If you don’t need a perpetual license, click on the button below to purchase an SDL Plus license valid for 90 days (not a subscription, non-recurring):

*plus VAT or sales tax, where applicable. Click button to see price in your local currency (if supported).

Trial licenses

Please contact us if you would like to request a SDL Plus trial license before purchasing.

License FAQ

About FastSpring

Secure ordering by FastSpring

Based in California in the United States, FastSpring is our trusted reseller for digital products and your contractual partner for your purchase. FastSpring automatically generates your license keys and invoice immediately after your payment has been received.

FastSpring also calculates the VAT or sales tax that may be due on your order and takes care of collecting and remitting the taxes. FastSpring’s W-9 form can be downloaded here (PDF).

Activating your license

Simply copy the license key to the license tab and click on apply:

Activating your license

Using one license on multiple devices

The EULA says that “one paid license is required for each device installation or instance of this software that you wish to use simultaneously”. This means that you can use a single license on multiple devices, provided that they are never used at the same time.

Example 1: You have 5 users working with SDL at the same time but those
users alternately use 10 computers (e.g. a desktop and laptop for each user). You would need to purchase only 5 licenses.

Example 2: There’s only one user, but there are 5 computers running SDL
simultaneously (e.g. to acquire data from multiple experiments). You’d
also need 5 licenses.

Example 3: One user is running two installations of SDL simultaneously on the same computer to acquire data from two connected scales. You’d need two licenses.

Buying licenses directly from us (Smartlux SARL)

We very much prefer that you buy your licenses through FastSpring’s fully automated process as described above. This frees up our time for further development of our software.

If you would still like to purchase licenses directly from us, please contact us. Please note that we charge a non-refundable fee of 40€ (excl. VAT) per order for manual order processing.

Becoming a reseller

Are you interested in selling our software to your customers? Click here to learn more and to apply for a reseller account.