# Calndars vs Things Happen

The clearest difference is price: Things Happen at Free against Calndars's $3.99. Things Happen also leads on iOS requirement (11.0 vs 26.0). Calndars's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence and device support there is nothing between them.

Things Happen is free to download; Calndars costs $3.99 up front. Things Happen sells 2 one-off in-app purchases. Calndars asks for nothing beyond the download.

Calndars ships an update every 5 weeks, Things Happen every 2 months. The most recent releases landed on October 6, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Calndars | Things Happen |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calndars/id1481775085/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Paid | — |
| Size | 6 MB | 91 MB |
| Requires iOS | 26.0 | **11.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Geert Jadoul](https://appshunter.io/developer/458883064) | [Natalia Tsybulenka](https://appshunter.io/developer/901382548) |

## What reviewers say

### Calndars

[App page](https://appshunter.io/ios/app/calndars/id1481775085)

Effortlessly convert dates between over 30 major calendar systems, including Gregorian, Islamic, and Chinese. This utility is designed for global professionals and researchers needing precise cross-cultural date translations. Integrates with widgets and Shortcuts for seamless workflow.

**Highlights:** Convert dates across 30+ calendar systems, Supports Gregorian, Islamic, Chinese, Hebrew, Persian, and more, Native experience on iPhone, iPad, Mac, Apple Watch, Customizable widgets, Shortcuts integration, AppleScript support on macOS

**In-app purchases:** none


### Things Happen

[App page](https://appshunter.io/ios/app/things-happen-life-tracker/id1512430864)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Things | $0.99 | one-time |
| No Limits | $1.99 | one-time |


## Frequently asked questions

### Is Calndars free?

Calndars costs $3.99, with no in-app purchases.

### Is Things Happen free?

Things Happen is free to download, with in-app purchases available.

### Do Calndars or Things Happen have ads?

Things Happen shows ads; Calndars does not.

### Which is updated more often, Calndars or Things Happen?

Calndars ships an update every 5 weeks, and Things Happen every 2 months. Most recently, Calndars was updated on October 6, 2026 and Things Happen on October 18, 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.*