# Zeronoon vs Calendar Notes Pro

The clearest difference is in-app purchases: Calendar Notes Pro at none against Zeronoon's 2. Calendar Notes Pro also leads on update cadence (daily vs fortnightly). Zeronoon's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Zeronoon sells 2 in-app purchases, starting at $4.99 per month. Calendar Notes Pro asks for nothing beyond the download.

Zeronoon ships an update fortnightly, Calendar Notes Pro daily. The most recent releases landed on October 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Zeronoon | Calendar Notes Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calendar-notes-pro/id6757369920/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Daily** |
| Monetization | — | Ad-supported |
| Size | 58 MB | 35 MB |
| Requires iOS | **14.0.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZERONOON LIMITED](https://appshunter.io/developer/1775736649) | [Alok Haldiya](https://appshunter.io/developer/1866422343) |

## What reviewers say

### Zeronoon

[App page](https://appshunter.io/ios/app/zeronoon/id6737965713)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zeronoon Pro Monthly | $4.99 | per month |
| ZeronoonPro Premium Yearly | $47.49 | per year |


### Calendar Notes Pro

[App page](https://appshunter.io/ios/app/calendar-notes-pro/id6757369920)

This app integrates your calendar and notes into a single, minimalist interface. View notes directly on your calendar and enjoy instant auto-save for a stress-free organization experience. It prioritizes privacy by storing all data locally on your device.

**Highlights:** Notes displayed on calendar, Instant auto-save, Minimalist design, Tap to write notes, Fully offline functionality, Local data storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zeronoon free?

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

### Is Calendar Notes Pro free?

Calendar Notes Pro is free to download, with no in-app purchases.

### Do Zeronoon or Calendar Notes Pro have ads?

Calendar Notes Pro shows ads; Zeronoon does not.

### Which is updated more often, Zeronoon or Calendar Notes Pro?

Zeronoon ships an update fortnightly, and Calendar Notes Pro daily. Most recently, Zeronoon was updated on October 6, 2026 and Calendar Notes Pro on September 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.*