# CAL_ vs Simple Calendar & Diary

The clearest difference is ads: CAL_ at none against Simple Calendar & Diary's shown. CAL_ also leads on update cadence (every 4 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CAL_ ships an update every 4 days, Simple Calendar & Diary every 3 weeks. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CAL_ | Simple Calendar & Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 9 MB | 11 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SQUAIR Inc.](https://appshunter.io/developer/1162347955) | [Yuichi HARA](https://appshunter.io/developer/538530212) |

## What reviewers say

### CAL_

[App page](https://appshunter.io/ios/app/cal-logging-calculator/id1162347956)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Calendar & Diary

[App page](https://appshunter.io/ios/app/simple-calendar-and-diary/id1383507802)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CAL_ free?

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

### Is Simple Calendar & Diary free?

Simple Calendar & Diary is free to download, with no in-app purchases.

### Do CAL_ or Simple Calendar & Diary have ads?

Simple Calendar & Diary shows ads; CAL_ does not.

### Which is updated more often, CAL_ or Simple Calendar & Diary?

CAL_ ships an update every 4 days, and Simple Calendar & Diary every 3 weeks. Most recently, CAL_ was updated on November 11, 2026 and Simple Calendar & Diary on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*