# Klender Pro Calendar vs Study Timer

The clearest difference is price: Study Timer at Free against Klender Pro Calendar's $0.99. Study Timer also leads on in-app purchases (none vs 1) and update cadence (every 2 days vs every 6 weeks). Klender Pro Calendar's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.1). On device support there is nothing between them.

Study Timer is free to download; Klender Pro Calendar costs $0.99 up front. Klender Pro Calendar sells 1 one-off in-app purchase. Study Timer asks for nothing beyond the download.

Klender Pro Calendar ships an update every 6 weeks, Study Timer every 2 days. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Klender Pro Calendar | Study Timer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/klender-pro-calendar/id1508858177/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Paid | — |
| Size | 44 MB | 36 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Toni Granados Martinez](https://appshunter.io/developer/1207780952) | [Ryan Impey](https://appshunter.io/developer/1773084455) |

## What reviewers say

### Klender Pro Calendar

[App page](https://appshunter.io/ios/app/klender-pro-calendar/id1508858177)

Organize your personal and professional life with a dynamic and intuitive calendar. It features a visually appealing interface with emojis and offers advanced options like calendar grouping, event repetition, and participant sharing.

**Highlights:** Calendar grouping, Event creation and modification, Customizable calendar icons with emojis, Recurring event setup, Participant management and sharing, Export to CSV and PDF, iOS calendar synchronization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Klender Premium | $2.99 | one-time |


### Study Timer

[App page](https://appshunter.io/ios/app/study-timer-focus-fish/id6745766537)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Klender Pro Calendar free?

Klender Pro Calendar costs $0.99, and also offers in-app purchases.

### Is Study Timer free?

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

### Do Klender Pro Calendar or Study Timer have ads?

Study Timer shows ads; Klender Pro Calendar does not.

### Which is updated more often, Klender Pro Calendar or Study Timer?

Klender Pro Calendar ships an update every 6 weeks, and Study Timer every 2 days. Most recently, Klender Pro Calendar was updated on November 3, 2026 and Study Timer 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.*