4.6
157K reviews
10M+
Downloads
Content rating
USK: All ages
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About this app

Slack brings team communication and collaboration into one place so you can get more work done, whether you belong to a large enterprise or a small business. Tick off your to-do list and make progress on your projects by bringing the right people, conversations, tools and information you need together. Slack is available on any device, so you can find and access your team and your work whether you’re at your desk or on the go.

Use Slack to:
• Communicate with your team and organise your conversations by topic, project or anything else that matters to your work
• Message or call any person or group within your team
• Share and edit documents and collaborate with the right people, all in Slack
• Integrate the tools and services you already use into your workflow, including Google Drive, Salesforce, Dropbox, Asana, Twitter, Zendesk and more
• Easily search a central knowledge base that automatically indexes and archives your team’s past conversations and files
• Customise your notifications so you stay focused on what matters

Scientifically proven (or at least rumoured) to make your working life simpler, more pleasant and more productive. We hope you’ll give Slack a try.

Having trouble? Please contact feedback@slack.com
Updated on
6 Nov 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance
This app may collect these data types
Personal info, Photos and videos and 6 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
153K reviews
Daniel Veihelmann
18 June 2020
I use Slack on my desktop (browser) and the mobile app, and it's very frustrating that notifications aren't in sync anymore. My phone still shows notifications that I read hours ago in the browser. I know that this affects our entire team (not sure about iOS). Please fix this, this used to work in the past. I had mixed feelings about the new UI, but I'm actually fine with it now. (Though not sure if it's a good idea to have a non-standard navigation for the average user...)
48 people found this review helpful
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SLACK TECHNOLOGIES L.L.C.
18 June 2020
We are sorry to hear about these issues and would be interested to look into this workspace for you. Would you mind dropping us an email to feedback@slack.com?
Mathias Anders
2 September 2022
While speaking (huddle or call), Slack does not use the Bluetooth headphones automatically. Also, I'm missing a toggle speakers on/off button. It's cumbersome when all I want is a spontaneous call. Worst thing: A colleague wanted to share their screen and I couldn't see it. Skype and other chat programs manage to do that on a mobile device. Four stars if you get that working - seriously, it's a basic functionality even for cell phones. Five stars, if the software stops being cumbersome.
14 people found this review helpful
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SLACK TECHNOLOGIES L.L.C.
2 September 2022
Hi there, We’d be interested in hearing more about this issue with calls. When you have a moment, please navigate to your app’s "You" tab > "Preferences" > "Send Feedback" to flag this with our support team. We’ll be happy to help!
Nemanja Borovac
20 October 2022
I am really sick of this app. The lengths it goes to hamper productivity (or they're just omissions): 1) direct share for Android share menu can't be switched off. At first, I had colleagues showing up in my share menu, but I kind of lived with it. But now, even slack apps are showing up and it's the ones you can't even message. 2) when I do click slack icon to share something, the starred colleagues and channels are not at the top (or anywhere on screen, actually) so I have to search for them.
36 people found this review helpful
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What's new

Bug fixes
• "Double, double toil and trouble / Vanishing emoji bubble / Found a bug and dumped the cache / This update will fix the crash." (If you were running into a crash when selecting an emoji reaction, updating the app should banish this spooky behavior. Happy Halloween!)