# Booking & Appointment Tracker vs Kalender

The clearest difference is in-app purchases: Kalender at none against Booking & Appointment Tracker's 2. Kalender also leads on ads (none vs shown) and update cadence (weekly vs monthly). On price and device support there is nothing between them.

Both are free to download. Booking & Appointment Tracker sells 2 in-app purchases, starting at $19.99 per year. Kalender asks for nothing beyond the download.

Booking & Appointment Tracker ships an update monthly, Kalender weekly. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Booking & Appointment Tracker | Kalender |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Size | 46 MB | 19 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Leonid Shulga](https://appshunter.io/developer/1498369847) | [Okan Aktas](https://appshunter.io/developer/1787013684) |

## What reviewers say

### Booking & Appointment Tracker

[App page](https://appshunter.io/ios/app/booking-and-appointment-tracker/id6474621828)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 year access to application | $19.99 | per year |
| Full access | $24.99 | one-time |


### Kalender

[App page](https://appshunter.io/ios/app/kalender-akll-randevu/id6748649645)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Booking & Appointment Tracker free?

Booking & Appointment Tracker is free to download, with in-app purchases available.

### Is Kalender free?

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

### Do Booking & Appointment Tracker or Kalender have ads?

Booking & Appointment Tracker shows ads; Kalender does not.

### Which is updated more often, Booking & Appointment Tracker or Kalender?

Booking & Appointment Tracker ships an update monthly, and Kalender weekly. Most recently, Booking & Appointment Tracker was updated on October 29, 2026 and Kalender on October 28, 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.*