# Instant Calendar vs RotaCell

The clearest difference is in-app purchases: Instant Calendar at none against RotaCell's 2. Instant Calendar also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RotaCell sells 2 in-app purchases, starting at $6.99 per year. Instant Calendar asks for nothing beyond the download.

Instant Calendar ships an update every 10 days, RotaCell weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Instant Calendar | RotaCell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/rotacell-shift-planner/id6811958325/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | — | Freemium |
| Size | 97 MB | 42 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Bii](https://appshunter.io/developer/666785006) | [Rodolfo Antonio Zorrilla Pena](https://appshunter.io/developer/6776592795) |

## What reviewers say

### Instant Calendar

[App page](https://appshunter.io/ios/app/instant-calendar/id6787633958)

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

**In-app purchases:** none


### RotaCell

[App page](https://appshunter.io/ios/app/rotacell-shift-planner/id6811958325)

This app helps manage complex work schedules with a visually appealing interface. It offers features like schedule scanning, overtime tracking, and pay calculation, with optional advanced tools for live updates and health integration.

**Highlights:** Schedule scanning from printed documents, Multiple job support with double-booking warnings, Overtime and pay tracking, Live Activity for Lock Screen and Dynamic Island, Sharing schedules with others, Customizable themes and languages

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RotaCell (Yearly) | $6.99 | per year |
| RotaCell (Forever) | $29.99 | one-time |


## Frequently asked questions

### Is Instant Calendar free?

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

### Is RotaCell free?

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

### Do Instant Calendar or RotaCell have ads?

Neither Instant Calendar nor RotaCell shows ads.

### Which is updated more often, Instant Calendar or RotaCell?

Instant Calendar ships an update every 10 days, and RotaCell weekly. Most recently, Instant Calendar was updated on October 28, 2026 and RotaCell on October 31, 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.*