Comparison

Zulip vs Kairso

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zulip

This team chat application allows users to read and respond to messages within their original context, helping maintain focus. It supports teams of all sizes, from small groups to large organizations, and is 100% open-source.

Highlights
  • Contextual message reading and responding
  • Topic-based organization
  • Focus maintenance
  • Supports teams of all sizes
  • 100% open-source
  • Cloud or self-hosted options
Features
Read full description

Zulip (https://zulip.com/) helps teams of all sizes be more productive together, from a few friends hacking on a new idea, to globally distributed organizations with hundreds of people tackling the world's hardest problems. Unlike other chat apps, Zulip lets you read and respond to every message in context, no matter when it was sent. Maintain your focus and then catch up on your own time, reading the topics you care about, and skimming or skipping the rest. Like everything Zulip, this official Zulip mobile app is 100% open-source software: https://github.com/zulip/zulip-flutter . Thank you to the hundreds of contributors who have made Zulip what it is! Zulip is available as a managed cloud service or a self-hosted solution. Please send questions, comments, and bug reports to support@zulip.com, or tweet @zulip.

About

Kairso

Features
Read full description

Kairso — Workspace, Team & Project Management Kairso is the all-in-one workspace app that helps teams stay organized, accountable, and aligned — replacing scattered spreadsheets, chat threads, and sticky notes with one clear, real-time dashboard. Whether you're running a small business, managing a remote team, or coordinating multiple projects across departments, Kairso brings attendance, performance, scheduling, and project tracking together in a single, easy-to-use workspace. ATTENDANCE & TIME TRACKING Check in and out with a tap. Kairso automatically logs attendance and flags late arrivals, so managers always have an accurate, up-to-date picture of who's working and when — no manual timesheets required. KPI & PERFORMANCE TRACKING Set clear, measurable KPIs for individuals and teams, then track progress over time. Spot trends early, celebrate wins, and address gaps before they become problems. PROJECTS & MODULES Break work down into projects and modules, assign team members, and follow progress from kickoff to completion. Switch between active projects instantly and see exactly where each one stands. MEMBER SCHEDULES & TIMELINES Plan shifts and schedules visually, avoid double-bookings, and give every member a clear view of what's expected and when — all synced across the whole workspace. INITIATIVES & FEEDBACK Capture team ideas, run initiatives, and collect feedback directly inside the app. Keep communication structured and give every team member a voice in shaping how the workspace runs. WORKSPACE STATS & HISTORY Get a bird's-eye view of workspace health with built-in analytics and a full activity history — track changes, review past decisions, and understand performance trends at a glance. TEAM & ROLE MANAGEMENT Invite members with a simple invitation system, assign roles and permissions, and control who can manage the workspace, projects, and sensitive data. REAL-TIME NOTIFICATIONS Never miss an update. Get instant notifications for invitations, schedule changes, KPI updates, and project activity, so your team always stays in sync. SECURE & RELIABLE Kairso uses secure sign-in (including Google and Apple Sign-In) and is built on a reliable, modern infrastructure to keep your workspace data safe and always accessible. WHY TEAMS CHOOSE KAIRSO One workspace for attendance, performance, scheduling, and projects Clean, intuitive interface designed for daily use Real-time sync across all team members and devices Flexible enough for small teams, growing startups, and multi-project organizations No more juggling spreadsheets, chat apps, and disconnected tools Download Kairso today and bring structure, visibility, and momentum to the way your team works together.

Screenshots

Zulip3 screens
Kairso4 screens

Verdict

The call

The clearest difference is update cadence: Kairso at every 3 days against Zulip's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Zulip ships an update monthly, Kairso every 3 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Zulip versus Kairso: the parameters behind the verdict, then further details
ParameterZulipKairso
PriceFreeFree
Rating3.7 (16 ratings) — better—
Positive reviews39.3% of reviews—
Number of ratings16 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size41 MB48 MB
Age rating12+4+
DeveloperKandra Labs, Inc.Cao Viet Duc

In-app purchases

None

Zulip

No in-app purchases

None

Kairso

No in-app purchases

Questions

Is Zulip free?
Zulip is free to download, with no in-app purchases.
Is Kairso free?
Kairso is free to download, with no in-app purchases.
Do Zulip or Kairso have ads?
Neither Zulip nor Kairso shows ads.
Which is updated more often, Zulip or Kairso?
Zulip ships an update monthly, and Kairso every 3 days. Most recently, Zulip was updated on November 6, 2026 and Kairso on October 31, 2026.

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