We’ve Tried Slack vs. Flock: Which Chat Solution is Right for Your Team?

Choosing the right team communication platform can make or break your workflow. After months of testing both Slack and Flock with real teams, we’re breaking down what actually matters when you’re making this decision. And yes, we’ll show you where TrueConf fits into this equation, especially if you’re looking for something that goes beyond basic messaging.

Let’s get straight to what these platforms offer and what they’ll cost you.

Slack vs Flock: Pricing Breakdown

Here’s where your budget comes into play:

Slack Pricing:

• Free: Limited message history (90 days), 10 integrations, 1:1 video calls
• Pro: $8.75/user/month (billed annually) – Full message history, unlimited integrations, group video calls up to 50 participants
• Business+: $15/user/month (billed annually) – Advanced security, compliance features, 99.99% uptime SLA
• Enterprise Grid: Custom pricing – For large organizations requiring enterprise-grade controls

Flock Pricing:

• Free: Basic features with limitations on searchable messages and storage
• Pro: $4.50/user/month (billed annually) – Unlimited search, screen sharing, guest access
• Enterprise: Custom pricing – Advanced admin controls, dedicated support

The price gap is obvious: Flock appears cheaper on paper. But here’s what we learned: cheaper doesn’t always mean better value. A team of 50 users would pay $4,380/year for Flock Pro versus $5,250/year for Slack Pro. That $870 difference might seem significant until you realize what you’re getting (or not getting) for that money.

Slack vs Flock: Interface Showdown

Slack’s Interface: Slack feels familiar if you’ve used any modern chat app. The three-panel layout, sidebar for channels, main chat area, and thread panel, works well once you adjust to it. However, with dozens of channels, the sidebar becomes cluttered fast. We found ourselves constantly searching for the right channel, even with the star-favorite feature.

The threading system is both a blessing and a curse. It keeps conversations organized, but important replies buried in threads often get missed. One project manager on our test team said she spent 20 minutes looking for a file someone shared in a thread three days prior.

Flock’s Interface: Flock takes a cleaner approach. The interface feels less overwhelming, with better visual hierarchy. The integrated to-do lists and polls live right in the sidebar, which our teams actually used (unlike Slack’s many unused features).

But here’s the catch: simpler sometimes means less powerful. The search function in Flock isn’t as robust. When we needed to find a specific conversation from two months back, Slack found it in seconds while Flock required more precise keywords.

Flock or Slack: Chat Features Head-to-Head

This is where rubber meets road.

Slack Chat: The messaging experience is solid. Reactions, mentions, reminders: everything you’d expect works well. The real strength shows up in custom emoji and advanced formatting. Our marketing team created dozens of custom reactions that became part of their workflow culture.

Slack’s “All Unreads” view sounds great theoretically. In practice, it became overwhelming for our sales team managing multiple client channels. One rep told us he started ignoring it entirely because it stressed him out.

Message editing and deletion work smoothly, with clear edit histories. The scheduled send feature proved useful for managers working across time zones.

Flock Chat: Flock’s chat does the basics right. Messages send quickly, notifications work reliably, and the mobile experience matches the desktop version. The built-in video messages are genuinely useful – our remote teams used them for quick updates that felt more personal than text.

Where Flock stumbles: the lack of advanced search filters. Slack lets you search by person, channel, date range, and file type. Flock’s search is more basic, which became frustrating when trying to locate specific information.

The polling feature integrated directly into chat is brilliant. Instead of using external tools, teams ran quick decision polls right in their project channels. This small feature drove more engagement than we expected.

TrueConf Chat: TrueConf approaches chat as a complement to video communication rather than the main event. The messaging includes end-to-end encryption by default—not as an enterprise add-on. Explore TrueConf’s secure chat features that keep your sensitive business conversations protected without complicated setup processes.

Slack vs Flock: Video Call Comparison

Video quality determines whether your remote meetings feel productive or frustrating.

Slack Video Calls: On the free plan, you’re limited to 1:1 calls. That’s a dealbreaker for most teams. The Pro plan supports up to 50 participants, which handled our needs.

Video quality was good on stable connections but degraded noticeably when bandwidth got tight. Screen sharing worked fine, though the interface takes up considerable screen real estate.

The biggest issue: Slack video feels tacked on. It works, but it’s clearly not the platform’s strength. Calls start from channels or DMs, but there’s no dedicated meeting space or waiting room feature. Everyone just pops in, which can be chaotic for larger calls.

Flock Video Calls: Flock includes screen sharing and video calls even on the free tier, which is generous. Quality-wise, it’s comparable to Slack — functional but not exceptional.

The interface is cleaner during calls, with better controls for muting and video toggling. We appreciated the “knock to join” feature that prevents people from barging into ongoing meetings.

However, Flock maxes out at 20 participants on Pro plans. If you’re running all-hands meetings with 30+ people, you’ll need additional tools.

TrueConf Video Calls: This is where TrueConf distinguishes itself completely. Built specifically for professional video conferencing, TrueConf supports up to 1,500 participants in a single meeting with 4K video quality.

Our test team noticed the difference immediately. Where Slack and Flock compressed video to maintain connection, TrueConf maintained crystal-clear quality even with multiple participants. The platform includes features that chat-first apps don’t consider: moderation tools, virtual backgrounds that actually look professional, real-time translation for international teams, and recording with accurate transcription.

See TrueConf’s video capabilities that handle everything from small team huddles to company-wide broadcasts without requiring multiple platforms.

Slack vs Flock: File Sharing Capabilities

Slack File Sharing: Drag and drop works flawlessly. Slack’s search can find files by name, type, or even text within documents (on paid plans). The 10GB storage limit on the Pro plan filled up faster than expected for our design team sharing mockups and assets.

Google Drive and Dropbox integrations make file sharing seamless if you’re already using those services. But here’s an annoyance: files shared in threads are harder to find later. Our content team created a dedicated “Assets” channel just for file storage because trying to locate files in conversation threads was maddening.

Flock File Sharing: Flock provides 10GB per user on Pro plans, which adds up better for larger teams. The dedicated “Shared Files” section in each channel makes finding attachments easier than Slack’s approach.

The file preview works well for common formats. However, version control is limited. If someone uploads a revised version of a document, there’s no clear way to see the history or compare versions. This caused confusion when our legal team was reviewing contracts.

Slack vs Flock: Integration Ecosystem

Slack Integrations: This is Slack’s superpower. Over 2,600 apps connect to Slack, from project management (Asana, Trello, Jira) to CRM (Salesforce, HubSpot) to development tools (GitHub, Bitbucket).

The Slack API is robust, allowing custom integrations for specific workflows. Our engineering team built a bot that posted deployment notifications directly to relevant channels—a genuine time-saver.

But here’s the reality check: most teams use 5-10 integrations regularly. Having access to 2,600 sounds impressive until you realize it’s overwhelming. We spent two weeks evaluating and testing different apps before settling on our core set.

Flock Integrations: Flock offers around 50 pre-built integrations covering major services like Google Calendar, Trello, Mailchimp, and Twitter. It’s not 2,600, but for many teams, it’s sufficient.

The integration setup is simpler than Slack’s. Less choice means less decision paralysis. Our operations team had their essential integrations running in under an hour.

The limitation appears when you need something specific. If your workflow depends on a niche tool, Flock probably won’t have a pre-built integration, and the API isn’t as extensively documented for custom development.

Slack vs Flock: Security & Privacy Analysis

Security isn’t exciting until something goes wrong. Then it’s the only thing that matters.

Slack Security: Slack offers encryption in transit for all data. Encryption at rest is available but requires the Business+ plan or higher. Two-factor authentication works smoothly, and we had no issues implementing it across our test teams.

Enterprise Key Management (EKM) lets larger organizations control their own encryption keys, but this costs extra. Data residency options exist for organizations that need data stored in specific geographic regions — again, on premium plans.

Slack is compliant with SOC 2, SOC 3, ISO/IEC 27001, and other standards. For most businesses, this checks the boxes. However, Slack stores all your data on their servers. You’re trusting their security, their backup systems, their disaster recovery plans.

One concern: deleted messages remain in Slack’s backup systems. Even if you delete something, it’s still technically recoverable in their systems.

Flock Security: Flock provides SSL encryption and complies with SOC 2 Type II, ISO 27001, and GDPR requirements. The security documentation is less detailed than Slack’s, which made our IT team slightly uncomfortable during evaluation.

Admin controls are solid on Enterprise plans. You can manage user permissions, enforce password policies, and monitor activity logs. But like Slack, your data lives on Flock’s infrastructure with limited control over exactly where and how it’s stored.

The privacy policy is clear: Flock doesn’t sell your data to third parties. That’s baseline expectation rather than impressive feature, but it’s good to see stated explicitly.

TrueConf Security & Privacy: Here’s where TrueConf takes a fundamentally different approach. You can deploy TrueConf on-premise, meaning your video calls and messages never leave your infrastructure. For healthcare, financial services, government, or any organization with strict data governance requirements, this is critical.

The Department of Health of Ho Chi Minh City|Case Study

TrueConf video collaboration solution connected more than 100 hospitals in Ho Chi Minh and allowed converting quarterly medical examination and treatment briefings between the Department of Health and hospitals into online mode. 660 employees of the City Oncology Hospital can now collaborate with one another without any barriers, increasing both speed and efficiency of communications.

Success story

End-to-end encryption comes standard, not as a premium add-on. Your IT team controls the encryption keys, backup systems, and data retention policies. If regulations require that data never crosses certain borders, you simply don’t send it there.

Learn about TrueConf’s security features designed for organizations that can’t compromise on data protection—without the complexity of managing entirely separate communication systems.

The Real Decision: What Actually Matters?

After three months of real-world testing, here’s what we learned:

Choose Slack if:

• Your team lives in integrations and needs connections to dozens of specific tools
• You have budget flexibility and want the most popular platform with extensive community support
• Your primary need is channel-based text communication with video as a secondary feature
• You’re comfortable with data hosted on third-party servers

Choose Flock if:

• Budget is your primary constraint and you need basic features at lower cost
• Your team is small to medium-sized (under 100 people)
• You want simpler interface with less feature overload
• Built-in productivity tools (polls, to-dos) appeal to your workflow

Choose TrueConf if:

• Video communication quality actually matters to your business outcomes
• Security and data privacy aren’t negotiable (healthcare, finance, legal, government)
• You need to support large meetings (50+ participants) regularly
• You want control over your infrastructure rather than depending entirely on cloud services
• You’re tired of stitching together multiple platforms for chat, video, and collaboration

Try TrueConf Server Free!

• 1,000 online users with the ability to chat and make one-on-one video calls.
• 10 PRO users with the ability to participate in group video conferences.
• One SIP/H.323/RTSP connection for interoperability with corporate PBX and SIP/H.323 endpoints.
• One guest connection to invite a non-authenticated user via link to your meetings.

Learn more

The uncomfortable truth: Slack and Flock are chat apps with video features bolted on. TrueConf is a professional video platform with messaging support. Which architecture serves your team better depends on whether communication means endless text channels or face-to-face conversations.