# Simple D vs Calendaris

The clearest difference is ads: Calendaris at none against Simple D's shown. Simple D's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Simple D sells 1 one-off in-app purchase and Calendaris sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Simple D ships an update every 3 weeks, Calendaris every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Simple D | Calendaris |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 48 MB | 25 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [beeefriends](https://appshunter.io/developer/1498434318) | [JEONGCHEOL KIM](https://appshunter.io/developer/1834003457) |

## What reviewers say

### Simple D

[App page](https://appshunter.io/ios/app/simple-d-day/id1631871998)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $6.99 | one-time |


### Calendaris

[App page](https://appshunter.io/ios/app/calendaris/id6754298798)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calendaris Pro | $0.99 | per month |


## Frequently asked questions

### Is Simple D free?

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

### Is Calendaris free?

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

### Do Simple D or Calendaris have ads?

Simple D shows ads; Calendaris does not.

### Which is updated more often, Simple D or Calendaris?

Simple D ships an update every 3 weeks, and Calendaris every 2 months. Most recently, Simple D was updated on November 3, 2026 and Calendaris on October 30, 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.*