---
title: Impact on performance - iOS (classic)
description: Metrics to evaluate the performance impact of Contentsquare iOS SDK on your apps
lastUpdated: 07 April 2026
source_url:
  html: https://docs.contentsquare.com/en/ios/impact-on-performance/
  md: https://docs.contentsquare.com/en/ios/impact-on-performance/index.md
---

> Documentation index: https://docs.contentsquare.com/llms.txt
> Use this file to discover all available pages before exploring further.

The latest CSQ SDK is here! Learn how to [upgrade your app](https://docs.contentsquare.com/en/csq-sdk-ios/experience-analytics/upgrade-from-cs-sdk/).

Contentsquare strives to be non-intrusive and transparent to client app developers. The following are the technical specifics we can share on performance.

The following performance results were obtained under the following conditions:

| Condition | Value |
| - | - |
| Device model | iPhone 11 Pro |
| iOS version | 16.5 |
| Test App built using Xcode version | 15.3 |
| Test App built with Swift version | 5.8 |

We conducted the tests using a default `Master-Detail` app built using AdHoc distribution with no app thinning and with Swift symbols stripped. In the app, the SDK was making calls to the Public APIs, running, and collecting data in its default state.

Note

The numbers provided below will vary depending on the user's device, iOS version, SDK version, and if you use Swift or not, which Swift version you use if you do, if you enabled bitcode or not and which options you used when building your IPA for App Store distribution.

| Property | Value |
| - | - |
| SDK size (installed size, no Bitcode) | 5.2Mb |
| Max RAM usage | <2Mb |
| Max SDK CPU peak on event | <3% |
| Data transmitted over network for a default batch size of 50 events The size of the batch can be customized if needed | \~29kb |