# Ono vs Calendar Pro

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

Both are free to download. Calendar Pro sells 2 in-app purchases, starting at $1.99 per month. Ono asks for nothing beyond the download.

Ono ships an update fortnightly, Calendar Pro weekly. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Ono | Calendar Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 14 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dino Stancic](https://appshunter.io/developer/1888612425) | [GSSI.es](https://appshunter.io/developer/1896037103) |

## What reviewers say

### Ono

[App page](https://appshunter.io/ios/app/ono-quick-notes/id6761277901)

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

**In-app purchases:** none


### Calendar Pro

[App page](https://appshunter.io/ios/app/calendar-pro-daily-planner/id6769531348)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro monthly | $1.99 | per month |
| Pro yearly | $9.99 | per year |


## Frequently asked questions

### Is Ono free?

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

### Is Calendar Pro free?

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

### Do Ono or Calendar Pro have ads?

Neither Ono nor Calendar Pro shows ads.

### Which is updated more often, Ono or Calendar Pro?

Ono ships an update fortnightly, and Calendar Pro weekly. Most recently, Ono was updated on October 15, 2026 and Calendar Pro on October 8, 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.*