# trial version vs purchase version

**URL:** <https://forum.kx.com/t/trial-version-vs-purchase-version/7134>\
**Category:** Community Support\
**Tags:** kdb-and-q\
**Created:** [April 20, 2011, 12:03am UTC](https://forum.kx.com/t/trial-version-vs-purchase-version/7134 "2011-04-20T00:03:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![daronnebonneau](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@daronnebonneau](https://forum.kx.com/u/daronnebonneau)\
**Post date:** [April 20, 2011, 12:03am UTC](https://forum.kx.com/t/trial-version-vs-purchase-version/7134/1 "2011-04-20T00:03:00Z")

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Hi, What is the main difference between trial version and purchaseversion of the kx software ? thnx

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**Author:** ![Chris\_Burke1](https://avatars.discourse-cdn.com/v4/letter/c/e9bcb4/32.png) [@Chris\_Burke1](https://forum.kx.com/u/Chris_Burke1)\
**Post date:** [April 20, 2011, 1:52am UTC](https://forum.kx.com/t/trial-version-vs-purchase-version/7134/2 "2011-04-20T01:52:00Z")

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The trial system is a full version of kdb+ but is limited to a 32-bit address space, a 2 hour timeout and expiry every 90 days. Also, the license is for personal non-commercial use only.&nbsp;

Chris