# Sparkling Day vs Catendar

The clearest difference is ads: Sparkling Day at none against Catendar's shown. Sparkling Day also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). Catendar's advantage is update cadence (every 5 days vs fortnightly). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sparkling Day ships an update fortnightly, Catendar every 5 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sparkling Day | Catendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 171 MB | 13 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [展威 李](https://appshunter.io/developer/1685109805) | [Bumjoon Lee](https://appshunter.io/developer/6801095554) |

## What reviewers say

### Sparkling Day

[App page](https://appshunter.io/ios/app/sparkling-day/id6739429822)

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

**In-app purchases:** none


### Catendar

[App page](https://appshunter.io/ios/app/catendar-shift-work-calendar/id6803623896)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sparkling Day free?

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

### Is Catendar free?

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

### Do Sparkling Day or Catendar have ads?

Catendar shows ads; Sparkling Day does not.

### Which is updated more often, Sparkling Day or Catendar?

Sparkling Day ships an update fortnightly, and Catendar every 5 days. Most recently, Sparkling Day was updated on October 28, 2026 and Catendar 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.*