# SEVENFRIDAY vs Catendar

The clearest difference is in-app purchases: Catendar at none against SEVENFRIDAY's 2. Catendar also leads on update cadence (every 5 days vs every 3 weeks). SEVENFRIDAY's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SEVENFRIDAY sells 2 one-off in-app purchases. Catendar asks for nothing beyond the download.

SEVENFRIDAY ships an update every 3 weeks, Catendar every 5 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | SEVENFRIDAY | Catendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (9 ratings)](https://appshunter.io/ios/app/sevenfriday/id1042635173/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 84 MB | 13 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SEVENFRIDAY AG](https://appshunter.io/developer/1435155381) | [Bumjoon Lee](https://appshunter.io/developer/6801095554) |

## What reviewers say

### SEVENFRIDAY

[App page](https://appshunter.io/ios/app/sevenfriday/id1042635173)

This app lets you authenticate and register your luxury watches. Join a global community that values making the most of every day. As a registered member, you can expect future benefits and features.

**Highlights:** Authenticate NFC-chipped watches, Register watch ownership, Join global community, Receive future member benefits, Access luxury product information

**Features:** Apple Wallet

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NFT Collectible | $24.99 | one-time |
| NFT for watch | $24.99 | one-time |


### 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 SEVENFRIDAY free?

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

### Is Catendar free?

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

### Do SEVENFRIDAY or Catendar have ads?

Catendar shows ads; SEVENFRIDAY does not.

### Which is updated more often, SEVENFRIDAY or Catendar?

SEVENFRIDAY ships an update every 3 weeks, and Catendar every 5 days. Most recently, SEVENFRIDAY was updated on October 24, 2026 and Catendar on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*