Individual user license Upgrade your old licenseSchool licenseOrdering from MyCommerce Share-It TRIAL versionsTechnical requirements How to cite CDendro&CooRecorder A user testimony!

Individual user license

For use by individual researchers or with a single lab computer at a commercial dendro lab.

CDendro + CooRecorder TOGETHER: 68 US$ per installation (excl any VAT if applicable).

With this license, use of the programs is limited EITHER to usage on one single personal computer not used as a server OR to usage by one single person on at most two computers. When several researchers are using the programs on different computers they need one license per person.

Purchase individual licences for CDendro & CooRecorder 9.8.1 for Windows dated March 23 2022 á 68 US$

You always get the download information directly by email! See the section below on "Ordering from MyCommerce Share-It"

Upgrade your old registered CDendro/Coorecorder version
to the current version 9.8.1 dated March 23 2022.

Upgrade your old version now through MyCommerce Share-It, only 22 US$

This upgrade product does not contain any license registration key pair as you should use the key pair of your old purchased CDendro version!

You always get the download information directly by email! See the section below on "Ordering from MyCommerce Share-It"

School license - only for education.

For use by many students, we offer you the alternative to purchase a "school license" at the same cost as of 20 individual licenses.

With a "school license"
  • use of CDendro & CooRecorder is unlimited for education within your local school or institute!
  • you can install CDendro & CooRecorder on a local server from which your students can access the programs and run on their local lab PCs. This will free you from installing on each computer in a lab.
  • you can offer your students to install CDendro & CooRecorder also on their own Windows PCs in cases when your server is not available to them. The license is then valid for the individual student as long as he/she is still studying at your local school or institute.
  • The price 1360 US$ (excl VAT), corresponding to the cost of 20 individual licenses, is a one-time fee, meaning that you can use the programs with new students for several years.
Purchase CDendro & CooRecorder 9.8.1School License for Windows dated March 23 2022. 1360 US$

Special School License Conditions:

  • You may not publish these programs or your license registration key pair(s) on the internet or in any other way make them publicly available or available to a wider audience.
  • The "school license" with its programs is intended only for educational activities within your local organization.
  • You may individually enable your limited group classroom students to install the programs on their private computers - but you should especially see that this will never give a wider audience access to the programs or to your license registration key pair(s).

When "Sales Tax" applies to your order and you are working at a tax-exempt institution:

  • MyCommerce does not have the ability to place an order without sales tax when sales tax is mandatory. Though for customers within the US, MyCommerce can issue a refund of the sales tax after the order has been processed with a copy of the exemption certificate. Once the customer has placed their order an email can be sent to this address:
    with the order ID and the exemption certificate attached and MyCommerce will process the refund. We regret any inconvenience that this may cause.

  • Unfortunately, with customers outside of the EU and the US it will be a case by case basis on whether MyCommerce can refund the tax and what is required to do so. We would recommend sending an email (see address above) to MyCommerce if you run in to a case and MyCommerce can provide the details. See also Tax calculation

Ordering from MyCommerce Share-It

Ordering You can purchase the CDendro & CooRecorder program package from MyCommerce Share-It, a Digital River Company, which is my only distributor.

Payment options You can pay by credit card (e.g. VISA) or by using PAYPAL or possibly by a Purchase Order Request. Paying by card is the fastest way to get the programs! You then avoid difficulties when ordering information is not properly included with a wire transfer, which might imply a delivery delay!

Download information by email! After you have ordered and payed, you will directly receive an email with your receipt and a download-link to the installation program and (if not an upgrade) your license registration key pair.

VAT If you should not pay VAT, see that you have your VAT number available when you order.

Ordering options:
There is an Extended Download Service offered by MyCommerce Share-It. With this service, MyCommerce Share-It retains a copy of your download, for a period of two years (check this!), should you need it again in the event of loss, a computer crash, virus, etc.
As an alternative, you might order a separate Backup CD containing the CDendro&CooRecorder installation file.

Privacy information After your purchase, MyCommerce Share-It will send us information about your purchase, e.g. your name and email address and which product you have bought. We will keep this information secret and not share it with other parties. We will only contact you by email if we find something problematic with your purchase, e.g. with your license key registration pair, or if we later identify a problem with the programs which might need your immediate attention.

We will use your name and email address to create a license key pair which will be your key to make the programs run. By using the programs, you accept that these programs will store your name and email address in many of the data files that you create with the programs. In case you find this information misleading, e.g. because the program package was purchased by an administrator at your site, you can get a new registration key pair with your own name if you contact us by email. (Address, see below.)

More documentation

TRIAL versions of CDendro and CooRecorder

Both programs are available as 30 days TRIAL versions. Though these are not fully functional:

  • CooRecorderTRIAL can only save coordinates for at most  80 ring coordinates.
  • Points placed with the tool for automatic detection of ringborders in CooRecorderTRIAL cannot be saved.
  • CDendroTRIAL can only show 180 years long curve diagrams together with a reference of at most 350 years.
  • CDendroTRIAL cannot save collections of samples in decadal/Tucson format.
(The numbers above was extended from version 9.2 to give you a better impression of the program capabilities.)

Each program does not cost more than a book... - so why not buy the complete package at once.

Downloading the TRIAL-versions of CDendro+CooRecorder

Download the 9.4 TRIAL versions of CDendro+CooRecorder (3.8 MB)

Link to Download CDendro Help files (not as updated as the internet site)

Installation:When you have downloaded the installation program, use Windows Explorer to

  1. Check and see that the downloaded file has ".exe" at the end of the file name (your Windows settings may prevent you from saving a downloaded file with that extension)
  2. double-click on the file name to start the installation program and follow the instructions.

Short technical requirements and considerations for running
CDendro and CooRecorder

Operating system: Only Windows! May run on other (e.g. MAC) systems when they have Windows installed (emulated).
Windows versions: Windows 7 and later. Current CDendro&CooRecorder version 9 will also run on Windows XP. Requires .NET Framework version 3.5 to be installed on your system - this is normally already installed on all modern Windows systems.

RAM memory/Primary memory: At least 3 GB of RAM. Will run on less but it will then not be possible to open some too big image files in CooRecorder.
As a reference: On my 64 bit Windows 10 machine with 16 GB RAM memory, I can open a big image which is 84000 pixels wide and 4000 pixels high, though it takes about six seconds to load (open) that file. After loading the program and image updates run as fast as when handling a normal small image.

Display: At least 1280x800, but 1680x1050 recommended with 24-bit color and 512 MB of dedicated VRAM, 2 GB is recommended.
(Big images are a limiting factor! You have to experiment to find out what you can open in CooRecorder. From a big cross-cut of a tree, scanned in high resolution, you will probably need to crop your image to only show the path along which you want to measure. Please be aware that your reasonably small but compressed .jpg file on your hard disk memory will expand quite a lot when you open it.)

20 MB of available hard-disk space for installation. What takes space on your hard disk will be your own scanned image files!

The size of text and other items in Windows should be set to 100%, i.e. you cannot run CDendro or CooRecorder with e.g. the text magnified by Windows as that will make some texts unvisible. This limitation might be a hindrance to some people.

Internet connection is necessary for access of documentation (help texts) which is only available online at

Language: Only available in English.

We sincerely recommend all customers to first test and try out the TRIAL version of CDendro & CooRecorder before ordering a copy of the full version!

March 23, 2022
Lars-Åke Larsson

How to cite CDendro & CooRecorder

Citation to use for CDendro & CooRecorder:

Larsson L. (2005). CDendro & CooRecorder program package, version 9.8.1 March 23 2022. (accessed Oct 17 2023).

Please replace with the number and date of the version used for your paper (see top left corner of the program screen) . Also see that your web access date is updated. 2005 = The year when we started to sell this program license. For a few years before, the program package was free of charge.

Read what one of our users, Mauri Timonen of the Natural Resources Institute Finland (Luke), writes about this program package!  
Scanner-based Tree-Ring Measurement System
Last update: March 23 2022 (Updated with citation info Oct.17 2023.)

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