# Simple Appointment App vs Kalender

The clearest difference is in-app purchases: Kalender at none against Simple Appointment App's 2. Kalender also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Simple Appointment App sells 2 in-app purchases, starting at $12.99 per month. Kalender asks for nothing beyond the download.

Simple Appointment App ships an update every 11 days, Kalender weekly. The most recent releases landed on July 25, 2026 and February 23, 2026 respectively.

## The numbers

| Metric | Simple Appointment App | Kalender |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simple-appointment-app/id6451069138/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 65.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Freemium | — |
| Size | 42 MB | 19 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mert Can TASKIN](https://appshunter.io/developer/1716262900) | [Okan Aktas](https://appshunter.io/developer/1787013684) |

## What reviewers say

### Simple Appointment App

[App page](https://appshunter.io/ios/app/simple-appointment-app/id6451069138)

Manage client appointments and schedules with ease. This app allows businesses and solo professionals to create customer lists, set staff availability, and track appointments. Customers can also book directly through the app, streamlining the entire process.

**Highlights:** Create customer lists, Manage multiple staff members, Set service and working hours, Customer self-booking, Appointment notifications, Income and appointment management

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Aylık | $12.99 | per month |
| Pro 6 Aylık | $69.99 | per 6 months |


### Kalender

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Appointment App free?

Simple Appointment App is free to download, with in-app purchases available.

### Is Kalender free?

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

### Do Simple Appointment App or Kalender have ads?

Neither Simple Appointment App nor Kalender shows ads.

### Which is updated more often, Simple Appointment App or Kalender?

Simple Appointment App ships an update every 11 days, and Kalender weekly. Most recently, Simple Appointment App was updated on July 25, 2026 and Kalender on February 23, 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.*