# Karbon for Clients vs Cal.com

Karbon for Clients and Cal.com both sit at 5.0 stars, but that hides the real split: 100% of Karbon for Clients's written reviews are positive against 62% of Cal.com's. Cal.com's advantage is ratings volume (232 vs 3). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Karbon for Clients against 4.9 for Cal.com. That said, the two scores are not equally well evidenced: Cal.com has 232 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 100% of Karbon for Clients's written reviews are positive against 62% of Cal.com's.

Karbon for Clients ships an update monthly, Cal.com every 4 weeks. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Karbon for Clients | Cal.com |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/karbon-for-clients/id6739312454/reviews)** | [4.9 (232 ratings)](https://appshunter.io/ios/app/calcom/id6757157271/reviews) |
| Number of ratings | 3 | **232** |
| Positive reviews | **100.0% of reviews** | 61.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 67 MB | 44 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Karbon Inc](https://appshunter.io/developer/1445496942) | [Cal.com, Inc.](https://appshunter.io/developer/1864941554) |

## What reviewers say

### Karbon for Clients

[App page](https://appshunter.io/ios/app/karbon-for-clients/id6739312454)

Securely share files, exchange information, and communicate with your accounting firm. Manage tasks and stay connected with your advisors from your mobile device. Track project progress and reduce back-and-forth communication.

**Highlights:** Secure file sharing, Client-advisor communication, Task management, Real-time project updates, Document signing, Reduced email/calls

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Cal.com

[App page](https://appshunter.io/ios/app/calcom/id6757157271)

This app simplifies scheduling meetings on the go. Book, reschedule, or cancel appointments with a few taps, syncing directly with your calendar. Receive smart notifications and integrate with your existing tools for seamless collaboration.

**Highlights:** Instant meeting booking, rescheduling, and cancellation, Real-time calendar synchronization, Smart push notifications for events, Integration with email and video tools, Mobile-friendly scheduling

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Karbon for Clients free?

Karbon for Clients is free to download, with no in-app purchases.

### Is Cal.com free?

Cal.com is free to download, with no in-app purchases.

### Which has better reviews, Karbon for Clients or Cal.com?

Karbon for Clients is rated higher. Karbon for Clients averages 5.0 out of 5 from 3 ratings, while Cal.com averages 4.9 from 232 ratings.

### Do Karbon for Clients or Cal.com have ads?

Neither Karbon for Clients nor Cal.com shows ads.

### Which is updated more often, Karbon for Clients or Cal.com?

Karbon for Clients ships an update monthly, and Cal.com every 4 weeks. Most recently, Karbon for Clients was updated on October 30, 2026 and Cal.com on November 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*