---
title: Impact on performance - Flutter
description: Metrics to evaluate the performance impact of Contentsquare Flutter SDK on your apps
lastUpdated: 05 December 2025
source_url:
  html: https://docs.contentsquare.com/en/csq-sdk-flutter/experience-analytics/impact-on-performance/
  md: https://docs.contentsquare.com/en/csq-sdk-flutter/experience-analytics/impact-on-performance/index.md
---

We always strive to be non-intrusive, and transparent to the developers of the client app. We apply this rule on the performance as well. These are the technical specifics we can share on performance, if you have any questions feel free to reach out to us.

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, as well as 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) | \~15Mb |
| 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 |