# How to use the app "Smart Calc"?

**URL:** <https://community.homey.app/t/how-to-use-the-app-smart-calc/157160>\
**Category:** Questions & Help\
**Created:** [July 13, 2026, 2:59pm UTC](https://community.homey.app/t/how-to-use-the-app-smart-calc/157160 "2026-07-13T14:59:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![HomeyPS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/homeyps/32/122561_2.png) [@HomeyPS](https://community.homey.app/u/HomeyPS)\
**Post date:** [July 13, 2026, 2:59pm UTC](https://community.homey.app/t/how-to-use-the-app-smart-calc/157160/1 "2026-07-13T14:59:57Z")

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We are trying to calculate the average of two numbers using the app “Smart Calc”. It seems to work, but how do we get the result into a variable?

 ![smartCalc1`j](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/7/976146a40a95f12ce6067f8fb2ae0ffd3c9806bc.jpeg)

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**Author:** ![smarthomesven](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/smarthomesven/32/79712_2.png) [@smarthomesven](https://community.homey.app/u/smarthomesven)\
**Post date:** [July 13, 2026, 3:15pm UTC](https://community.homey.app/t/how-to-use-the-app-smart-calc/157160/2 "2026-07-13T15:15:57Z")

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The Flow card provides a tag with the result. You can add a Set variable card from the Logic category and insert the tag there.

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<div class="post-metadata">

**Author:** ![HomeyPS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/homeyps/32/122561_2.png) [@HomeyPS](https://community.homey.app/u/HomeyPS)\
**Post date:** [July 13, 2026, 3:33pm UTC](https://community.homey.app/t/how-to-use-the-app-smart-calc/157160/3 "2026-07-13T15:33:58Z")

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> [@smarthomesven](#):
>
> variable card

Thanks for the information.

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**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\
**Post date:** [July 13, 2026, 3:38pm UTC](https://community.homey.app/t/how-to-use-the-app-smart-calc/157160/4 "2026-07-13T15:38:35Z")

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FYI - You can achieve the same with the standard Logic card ‘Calculate [variable] as [text/formula]’. You need to place the formula between `{{ }}`:

 ![IMG_2769](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/0/70b3cbbd02062b71a9057dcbd9a0abf87dbac8c1.jpeg)

You can of course replace the values 10 and 20 with your num1 and num2 variables.

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<div class="post-metadata">

**Author:** ![HomeyPS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/homeyps/32/122561_2.png) [@HomeyPS](https://community.homey.app/u/HomeyPS)\
**Post date:** [July 13, 2026, 5:25pm UTC](https://community.homey.app/t/how-to-use-the-app-smart-calc/157160/5 "2026-07-13T17:25:42Z")

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> [@SunBeech](#):
>
> You can achieve the same with the standard Logic card ‘Calculate [variable] as [text/formula]’. You need to place the formula between `{{ }}`

This is more easy. Thanks!