Comparison

Cal.com vs Buzz

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

Head to head
About

Cal.com

This mobile app simplifies meeting scheduling on the go. It allows users to book, reschedule, and cancel appointments with ease, syncing with their existing calendars and providing real-time availability. Smart notifications help users stay organized with upcoming events.

Highlights
  • Instant scheduling on mobile
  • Real-time calendar sync
  • Smart event notifications
  • Seamless integration with tools
  • Reschedule and cancel meetings
Features
Read full description

Cal.com Companion App: Schedule Meetings Effortlessly on the Go! Tired of juggling calendars and emails to book meetings? The Cal.com Companion App brings the power of Cal.com right to your fingertips, making scheduling seamless, fast, and mobile-friendly. Whether you're in a rush between calls or planning your week from anywhere, this app ensures you never miss a beat. Key Features: - Instant Scheduling: Book, reschedule, or cancel meetings with just a few taps—no desktop required. - Real-Time Availability: Syncs with your Cal.com calendar to show open slots and avoid double-booking. - Smart Notifications: Get push alerts for upcoming events, reminders, and confirmations to stay organized. (coming soon) - Easy Integration: Connects seamlessly with your email, video tools, and team calendars for hassle-free collaboration. Perfect for busy professionals, freelancers, and teams who value time. Download now and transform how you manage your schedule—anytime, anywhere! Available on iOS. Free for individuals to download without a subscription.

About

Buzz

Collaborate with both humans and AI agents in shared workspaces. Every interaction is logged for a transparent audit trail, ensuring a unified identity model for all participants. Agents can actively participate in channels, not just communicate.

Highlights
  • Human and AI agent collaboration
  • Shared rooms and channels
  • Signed event log with audit trail
  • Agents acting in workspace
  • Organized channels and threads
  • Image and media discussion
Features
Read full description

Buzz is a workspace where humans and AI agents share the same rooms. Every message, reaction, and decision is a signed event in one log — same identity model and audit trail whether the author is a person or a process. Add an agent to a channel the same way you add a teammate. Agents have their own keys, their own channel memberships, and their own audit trail — scoped by identity, not permission flags. • Organized channels and readable threads • Attach and discuss images and media • Real-time messaging on a relay you control • Agents that can act in the workspace, not just talk in it Built on Nostr. Self-hostable. The relay is yours.

Screenshots

Cal.com4 screens
Buzz4 screens

Verdict

The call

The clearest difference is rating: Cal.com at 4.8 against Buzz's 4.2. Buzz's advantage is update cadence (every 3 days vs every 3 weeks). On price, review sentiment, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

Cal.com holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 126 and 60 respectively. Written reviews complicate that: 55% of Cal.com's written reviews are positive against 58% of Buzz's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Cal.com ships an update every 3 weeks, Buzz every 3 days. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
Cal.com versus Buzz: the parameters behind the verdict, then further details
ParameterCal.comBuzz
PriceFreeFree
Rating4.8 (126 ratings) — better4.2 (60 ratings)
Positive reviews54.5% of reviews57.9% of reviews — better
Number of ratings126 — better60
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better16.0
Further details — not scored
Size41 MB64 MB
Age rating4+17+
DeveloperCal.com, Inc.Block, Inc.

Customer experience

Cal.com

All ratings126 ratings
Positive94.4%
Neutral1.6%
Negative4.0%
Written reviews11 reviews
Positive54.5%
Neutral9.1%
Negative36.4%

Buzz

All ratings59 ratings
Positive76.3%
Neutral8.5%
Negative15.3%
Written reviews38 reviews
Positive57.9%
Neutral23.7%
Negative18.4%

In-app purchases

None

Cal.com

No in-app purchases

None

Buzz

No in-app purchases

Questions

Is Cal.com free?
Cal.com is free to download, with no in-app purchases.
Is Buzz free?
Buzz is free to download, with no in-app purchases.
Which has better reviews, Cal.com or Buzz?
Cal.com is rated higher. Cal.com averages 4.8 out of 5 from 126 ratings, while Buzz averages 4.2 from 60 ratings.
Do Cal.com or Buzz have ads?
Neither Cal.com nor Buzz shows ads.
Which is updated more often, Cal.com or Buzz?
Cal.com ships an update every 3 weeks, and Buzz every 3 days. Most recently, Cal.com was updated on October 12, 2026 and Buzz on October 11, 2026.

Other comparisons