# Resona vs Shift Calendar

The clearest difference is device support: Shift Calendar at 3 against Resona's 1. Resona's advantage is iOS requirement (16.4 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Resona sells 2 in-app purchases, starting at $9.99 per 7 days and Shift Calendar sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Resona | Shift Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 9 days |
| Size | 107 MB | 55 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Maslaking](https://appshunter.io/developer/1747700026) | [CAN BAYRAKTARBASI](https://appshunter.io/developer/1895609317) |

## What reviewers say

### Resona

[App page](https://appshunter.io/ios/app/resona-focus-and-sleep/id6804606487)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Resona Weekly | $9.99 | per 7 days |
| Resona Yearly | $49.99 | per year |


### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-backshift/id6812816170)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backshift Pro Monthly | $4.99 | per month |
| Backshift Pro Yearly | $24.99 | per year |
| Backshift Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Resona free?

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

### Is Shift Calendar free?

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

### Do Resona or Shift Calendar have ads?

Neither Resona nor Shift Calendar shows ads.

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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.*