https://devzone.nordicsemi.com/f/nordic-q-a/57302/app_timer-is-it-advisable-to-use-app_timer-with-application-when-soft-device-is-enabledHi, Good Day! Statement of problem: Currently we are using app_timer in our application for conducting the user behavior. For example, for user input off of capacitive touch sensor we have used app_timer to model the user behavior. Also the RTC 2en-USTelligent Community 13Wed, 05 Feb 2020 09:11:54 GMThttps://devzone.nordicsemi.com/thread/232760?ContentTypeID=1Wed, 05 Feb 2020 09:11:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:658189a9-8f35-46c1-ab2a-7f5f68ee25d9haakonsh<p>That should be fine :)&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/232317?ContentTypeID=1Mon, 03 Feb 2020 12:47:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1af65b6a-8247-4bc2-bdd7-1fcc96788d5eAimHigh<p>Hi Haakonsh,</p> <p>Thank you for your response. Now i get it, about app_timer with application. Certainly app_timer used for our application is having minimum timeout value of 80mSec. and I hope it would not make much of difference in adding +5~10 mSec as a delay to the application becasue of soft device.&nbsp;</p> <p>We do not have app_timer dealing with critical stuff.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/232310?ContentTypeID=1Mon, 03 Feb 2020 12:26:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:852a8e6d-dc5c-4941-9576-8e51ad0152c8haakonsh<p>You can use two app_timers if you use RTC1 and RTC2, RTC0 is reserved by the SoftDevice.&nbsp;<br /><br />Do note that the app_timer is interrupt-driven and the SoftDevice&#39;s time-critical&nbsp;processes will have execution priority over the peripheral interrupts. This means that you will at times have app_timer events that have been blocked for a few ms.&nbsp;<br /><br />If this is a problem I suggest you try to offload the CPU with the PPI system (peripheral tasks/events) for your timing-critical stuff.&nbsp;</p><div style="clear:both;"></div>