# Conception Calendar vs Niio

The clearest difference is in-app purchases: Conception Calendar at none against Niio's 2. Conception Calendar also leads on ads (none vs shown). Niio's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price there is nothing between them.

Both are free to download. Niio sells 2 in-app purchases, starting at $2.99 per month. Conception Calendar asks for nothing beyond the download.

## The numbers

| Metric | Conception Calendar | Niio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Size | 1 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kerim Oz](https://appshunter.io/developer/6793500029) | [QUANG NINH BUI](https://appshunter.io/developer/6794876343) |

## What reviewers say

### Conception Calendar

[App page](https://appshunter.io/ios/app/conception-calendar/id6797316462)

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

**In-app purchases:** none


### Niio

[App page](https://appshunter.io/ios/app/niio-period-tracker/id6797809185)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Niio: Period Tracker | $2.99 | per month |
| Niio: Period Tracker | $12.99 | per year |


## Frequently asked questions

### Is Conception Calendar free?

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

### Is Niio free?

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

### Do Conception Calendar or Niio have ads?

Niio shows ads; Conception Calendar does not.

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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.*