Pumble vs. Slack (2026): Features, Pricing & Free Plan Compared

Slack is one of the most popular apps for workplace communication, but does that mean it’s the best — or is it just the default? 

I tested both Slack and Pumble, an app built for teams that want: 

• Less clutter
• Fewer limits
• More value for their money 

Turns out that the differences go deeper than just the price.

While Slack leans on its brand reputation and vast integration library, Pumble by CAKE.com quietly delivers the most important features even on the Free plan: 

• Unlimited message history 
• 24/7 human support 
• Clean, no-nonsense interface 

So, if your team is growing, remote, or just tired of limitations, you may want to reconsider your default. 

Here’s how Pumble and Slack really stack up.

Pumble vs. Slack: Main features comparison

While both Pumble and Slack are designed for team collaboration and communication, they take very different approaches — especially when it comes to pricing and value.

The table below outlines their main feature comparison.

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Although Slack offers quality features and good user experience, much of its functionality is locked behind a (pretty steep) paywall. On the other hand, Pumble offers more core features for free and keeps its paid plans more affordable.

Besides the pricing, some of the main differences between Pumble and Slack include:

• Free plan limits — Pumble includes unlimited messaging history and 10 GB of storage; Slack limits history to 90 days, and offers 5 GB of storage.
• Support — Pumble offers 24/7, 100% human customer support even on the Free plan; Slack limits this to business hours unless you buy a paid plan.

Now, let’s look at Pumble vs. Slack in more detail.

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Pumble vs. Slack: Pumble is less limiting & more affordable

The first glaring difference between Slack and Pumble is in the price.

Both apps have free and paid plans, with different features offered in each tier.

So, what do their free plans bring to the table? Here’s an overview.

As our comparison highlights, Pumble by CAKE.com is a truly usable product even in the Free plan.

If you want to upgrade, Pumble’s paid plans start at only $2.99 per user per month (billed monthly; $2.49 billed annually), which is affordable even for growing teams.

Pumble’s Pro plan includes all free features, plus:

• 10 GB of storage per seat
• Screen sharing
• More integrations
• Group meetings

Pumble offers 2 more paid plans:

• Business — Priced at $4.99 per user per month; offers more workspace administration features.
• Enterprise — Priced at $7.99 per user per month; offers more control and security features.

The reasonable pricing ensures that users can achieve both cost savings and productivity gains.

Slack, on the other hand, felt a lot more restricted.

With the free version, you are limited to:

• 90-day message history
• Sparse integrations 
• No access to group calls
• Data retention of up to one year 

You also get only 5 GB of storage per workspace.

Get unlimited history with Pumble

To unlock the features your team needs and get more storage, you’ll need to buy one of their paid plans, which start at $8.75 per user per month — and that adds up fast.

To illustrate, say you run a company with 65 employees — Slack’s Pro plan would cost you $6,825 per year. For comparison, Pumble’s Pro plan would run you $2,332 per year — almost 3 times (~65%) more affordable than Slack.

Slack also has 2 more paid tiers:

• Business+: Priced at $18 per user per month; offers advanced AI features and more security.
• Enterprise+: No public price; offers more security features.

The math doesn’t lie — when you compare Slack pricing vs. Pumble pricing, Pumble is significantly more affordable than Slack. And, if you want the free version, Pumble brings you more features and fewer limits.

Pumble vs. Slack: Communication features

When it comes to communication features, both Pumble and Slack cover the basics:

• Public and private channels
• Direct messages
• Threaded replies
• Mentions

However, the biggest difference lies in how much each app lets you do, especially in the free plan.

With Pumble, I had unlimited messages and file history right out of the box. I don’t have to worry about cutoffs and digging for old conversations only to find they’ve disappeared. Additionally, Pumble retains your data for the duration of your workspace’s lifetime.

Threads are easy to start and track, and you can turn on notifications for specific threaded conversations you would like to follow. You can also create public and private channels for different needs.

Pumble offers additional communication features, such as:

• Pinning messages — for keeping important information readily available
• Emoji reactions — for quick acknowledgment of messages
• Creating user groups — for easily notifying groups of people at the same time
• Scheduling messages — for sending reminders and planning asynchronous communication 

Slack also supports emoji reactions, message scheduling, and mentions. You can pin messages, edit them after sending, or set reminders for messages you want to follow up on later.

However, Slack limits free users to only 90 days of message history.

I can see this being a problem for teams that rely on instant messaging for business communication, or simply when you need to reference a message or file older than 90 days.

Keep your files on-hand in Pumble

Furthermore, Slack’s data retention policy states that Slack will only retain your data for up to a year on the free plan. This means that they save your messages for up to a year, but you can only access the last 90 days. After the year is up, your messages are automatically deleted. You can only access your full message history if you subscribe to a paid plan.

But, how do these platforms hold up when it comes to calls?

Voice and video calls

Both Pumble and Slack have some voice and video conferencing limits on their free plans.

Pumble offers 1:1 voice calls and video calls in its no-cost tier.

You can also send voice notes and video messages, which I find super helpful for quick updates that don’t require a meeting. While you record your video message, you can share your screen — a feature available in audio and video calls, too.

Group voice meetings and video conferencing are available on paid plans.

Slack offers 30-minute 1:1 Huddles on the free plan, which are audio calls you can turn into video meetings. On the paid plans, you can have up to 50 participants.

Overall, Pumble offers more flexible, full-featured communication options, without boxing you into a paid plan or hiding important messages after 90 days. 

Admittedly, Slack boasts better video call quality, which may still not be enough to justify the pricing if you need a comprehensive workplace communication app. 

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Pumble vs. Slack — AI features

When it comes to AI features, Slack has more built-in capabilities. But, how many of those features you can access depends on your subscription plan.

Users on the free plan have no access to AI-powered features, while users on the Pro plan can only use basic AI for conversation summaries. 

The Business+ plan, though, focuses heavily on AI-powered work, granting users access to:

• Conversation summaries
• Slackbot (personal AI agent)
• Workflow generation
• Advanced search
• Daily recaps
• File summaries

The same features are available to Enterprise users, too.  

Plus, Slack has introduced a host of AI agents meant to help employees better manage their work and time. 

On the flip side, Pumble’s AI features aren’t as extensive. That means they’re not as overwhelming, either. 

The software currently offers 3 ways of connecting LLMs to workspaces:

1. API add-on — for automated tasks such as sending messages, and creating channels, and reactions 
2. AI Assistant add-on — for bringing AI providers to  your workspace via API keys
3. MCP server — for integrating external AI agents (like Claude or Gemini) into a Pumble workspace

Thus, for workflows inseparable from AI, Slack seems to be the go-to. However, for teams looking for a dependable AI assistant, Pumble is a viable option. 

Pumble vs. Slack: User interface

When it comes to user interface and app design, Pumble and Slack offer a similar experience.

Pumble provides a clean, minimal, and focused workspace. I didn’t need any tutorial or onboarding to find my way around, and everything was easy to access.

The sidebar on the left holds all your: 

• Channels
• Direct messages
• App messages
• Drafts
• Mentions
• Files
• People

You can customize the sidebar by breaking it into sections and grouping related channels together — one group for internal updates, one for client work, and one for fun stuff, for example.

You can also choose what you want to see in the sidebar.

Additionally, Pumble lets you customize your theme — you can pick from light, dark, or more custom color themes.

Slack has a similar design and interface.

You also have a customizable sidebar with all of your messages and channels, and you can tailor the appearance of your workspace by adjusting the themes.

However, although Slack is intuitive and easy to use, it felt somewhat more cluttered with all the options and menus in the sidebar. Additionally, changing the settings and preferences felt clunky compared to Pumble.

Both apps offer solid user interfaces, but Pumble keeps things simpler and easier to manage, especially if you prefer distraction-free working.

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Pumble vs. Slack: Both apps offer customizable notifications

I’m someone who likes to stay responsive — just not at the cost of disrupted focus and unnecessary distractions.

Thankfully, both Pumble and Slack offer great notification customization options.

With Pumble, you can:

• Mute channels and DMs.
• Pause notifications. 
• Fine-tune alerts for each conversation.

You can also toggle the DND (Do Not Disturb) mode manually or set up a schedule to maximize your efficiency. 

Furthermore, you can change how notifications sound by customizing sounds for messages and incoming and outgoing calls.

You can also choose to be alerted of unread messages as well as product updates and news via email.

Stop notification overload with Pumble

Slack’s notifications are also very flexible. You can customize your workspace notifications by:

• Muting channels
• Pausing all alerts
• Setting notification schedules
• Choosing whether to get notifications for all messages, or only when you’re mentioned

Both Pumble and Slack get the job done and offer great options to customize your workflow, so you won’t go wrong with either.

Pumble vs. Slack: Slack offers advanced search options, but is limited by history

On paper, Slack has great search tools. In practice, though, these tools don’t mean much if you want to find messages older than 90 days.

That’s exactly the problem I ran into when testing Slack’s free plan. I tried searching for older messages in my workspace, only to find that it had already been archived — I couldn’t get to it unless I paid.

Unless you’re on a paid plan, Slack’s search is limited by its short message retention window.

On the other hand, Pumble offers unlimited message history — even on the Free plan.

So, Pumble’s search actually works when you need it. You can find conversations from weeks or months ago without hitting a wall or needing to upgrade.

In Pumble, you can search through:

• Files
• People and user groups
• Channels
• Messages

For teams that rely on chat apps as living knowledge bases, having access to   conversation history matters more than unnecessarily complex search filters.

Pumble vs. Slack: Slack offers more integrations

If your team uses a wide range of third-party apps, Slack has the edge, with over 2,600 app integrations in their library. It connects to major tools like Google Drive, Zoom, Trello, Asana, and various other productivity tools.

Pumble, on the other hand, prioritizes quality over quantity. While it doesn’t have Slack’s massive catalog, it supports popular tools like:

• Gmail
• Google Drive
• Jira
• Zendesk

Additionally, Pumble’s integration catalog is always expanding. To keep up with upcoming integration releases, check out the Pumble Roadmap. 

Another plus is that you can use Pumble’s API to build custom apps that integrate your internal tools, processes and data.

Build your own add-ons in Pumble

Moreover, Pumble’s native ecosystem is where the app really shines.

Pumble is built by CAKE.com, the brand behind Clockify (time tracking tool), and Plaky (project management tool). These 3 apps together create a unified space for communication, project management, and time management — without needing a dozen plug-ins to make it all work.

I rely on this trio daily — I message and call my team with Pumble, track my time and productivity with Clockify, and manage my tasks with Plaky. The way these apps are interconnected and work perfectly together creates a seamless, uninterrupted workflow.

Additionally, CAKE.com offers a Bundle plan for teams wanting to use Pumble, Clockify and Plaky together, making it cost-effective and easier to manage.

Overall, Slack has an advantage with the sheer number of integrations available, but Pumble isn’t far behind with its carefully thought out integrations and Productivity Suite.

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Pumble vs. Slack: Slack’s guest feature is more expensive

Both Pumble and Slack support guest access, allowing you to invite external collaborators — like contractors, freelancers, or clients — without giving them full access to your workspace.

In my testing, the experience felt very similar on both sides. You can control which channels or conversations guests see and contribute to, and restrict what they can do. You can also set time limits on how long guests can access your workspace.

You also have the ability to invite single-channel guests (which are free for both apps) or multi-channel guests (which are charged as regular users).

The key difference? Cost.

Slack allows guest access on paid plans, starting at $8.75 per user per month. If you’re working with multiple vendors or suppliers, the price adds up quickly. 

Pumble also requires a paid plan for guest access (Business or higher), but since these plans start at $4.99, the same functionality is far more affordable.

Chat with guests in Pumble

In conclusion, while both offer a similar guest access experience, Pumble is more budget-friendly for teams who regularly work with external users.

Pumble vs. Slack: Both tools take security seriously

Security is a top priority for both Pumble and Slack.

Pumble by CAKE.com is certified for ISO/IEC 27001:2022 and SOC 2, meaning it follows strict protocols for information security, risk management, and data privacy.

While Pumble isn’t end-to-end encrypted, it boasts security features such as:

• Multi-factor authentication
• Data encryption
• Roles and permissions for administrators
• Single sign-on (SSO)
• Custom data retention

Slack also maintains SOC 2 compliance and offers SSO, domain restrictions, and advanced admin tools.

Since this round of our Slack vs. Pumble review is pretty even, the main difference for users comes down to the pricing.

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Pumble vs. Slack: Pumble offers free 24/7 customer support

When something goes wrong — or you just have a question about a feature — customer support matters more than people think. I tested both platforms’ support response and there’s a noticeable difference in availability.

With Pumble, I was pleasantly surprised by the availability of 24/7 live support, even on the Free plan. You get 100% human support, no matter the time of day.

You have multiple ways of getting in contact with Pumble’s support team, including:

• Email
• Chatbot
• Phone support
• Contact form

So, with Pumble, you get round-the-clock access to customer support without having to upgrade to a paid plan.

If, however, you decide to upgrade, Pumble goes even further by assigning a dedicated customer success representative — someone who knows your workspace and can help you directly as your team grows.

On the other hand, Slack provides standard support — email and help center — with no phone support available. For the free plan, this mostly means slow response times. You need to be on a paid plan to access priority support, and even then, the fastest response times (4 hours) are reserved for the top-tier Enterprise customers.

If your team values quick answers and peace of mind — especially if you work odd hours or have employees across time zones — Pumble gives you consistent, reliable support without any extra costs.

FAQs

Now, we’ll answer some frequently asked questions about Slack and Pumble.

How does Pumble by CAKE.com compare to Slack?

Although Pumble and Slack share an intuitive interface, Pumble is more cost-effective. Slack’s thousands of integrations are a plus, but Pumble excels in delivering unlimited message history across all plans and offering more affordable paid tiers. 

Is Pumble really free?

Yes, you can sign up for Pumble’s Free plan, which provides unlimited users and message history, 10 GB of workspace storage, and unlimited channels. 

How much does Pumble cost?

Users can start off with the Free plan and later upgrade to the:

• Pro plan for $2.49 per seat per month (billed annually)
• Business plan for $3.99 per seat per month (billed annually)
• Enterprise plan for $6.99 per seat per month (billed annually)

Moreover, the CAKE.com Bundle delivers the Enterprise versions of 3 products — Pumble, Plaky, and Clockify — for just $12.99 per user per month (billed annually).

What are the disadvantages of using Slack?

The main cons of using Slack include the limited free plan, steep pricing of paid subscriptions, and information overload. 

What is the best free tool to use instead of Slack?

The best free Slack replacement is Pumble, as it covers a range of features from messaging and calls to threads and unlimited history. If you’re only looking for video conferencing, you could look into Discord, although the app is more suitable for personal use rather than business communication. Google Chat is a solid option if you need a lightweight Slack or email alternative. 

Does Pumble have video conferencing?

While the Pumble free plan offers 1:1 video and voice calls, all paid plans provide users with group video conferencing and screen sharing. 

Make the switch to Pumble by CAKE.com for better team communication 

If you’ve made it this far, one thing’s clear — Pumble gives you more, for less.

With Pumble, you have:

• No message limits
• No steep pricing
• No unnecessary noise and distractions

Although Slack is a great tool for large enterprises with a lot of resources to spare, Pumble emerges as an ideal communication tool for: 

• Startups
• Small or medium-sized businesses
• Any team that prioritizes value, simplicity, and permanent access to their data

If you’re already using Slack, switching to Pumble is only a few clicks away. Migration from Slack to Pumble is a simple and quick process, and it’s available even if you want to switch to a Free Pumble plan.

Try it for free today — no strings attached. See for yourself how smooth team communication and collaboration can be.

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