# Possible problem in Retention calculation
**URL:** https://discussions.unity.com/t/possible-problem-in-retention-calculation/652146
**Category:** Analytics
**Tags:** Analytics
**Created:** [January 16, 2017, 6:36am UTC](https://discussions.unity.com/t/possible-problem-in-retention-calculation/652146 "2017-01-16T06:36:52Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@quako](https://discussions.unity.com/u/quako)
#### Post date: [January 16, 2017, 6:36am UTC](https://discussions.unity.com/t/possible-problem-in-retention-calculation/652146/1 "2017-01-16T06:36:52Z")
I’ve noticed that there could be something wrong in the calculation of retention that occured on Dec 7th, where before that date unity retention figures matched our internal analytics figures, but on Dec 7th and onwards unity analytics seems to understate the retention numbers for some reason.
is this happening to anyone else ?
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### Author:  [@ap-unity](https://discussions.unity.com/u/ap-unity)
#### Post date: [January 19, 2017, 11:48pm UTC](https://discussions.unity.com/t/possible-problem-in-retention-calculation/652146/2 "2017-01-19T23:48:42Z")
@quako
Was there any change made on your app? Did you release a new version?
Could you submit a support ticket with your project ID and we would be able to investigate this issue further:
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