# Kaadas Smart vs 有幸Ulucky

The clearest difference is ads: 有幸Ulucky at none against Kaadas Smart's shown. 有幸Ulucky also leads on monetization model (free vs ad-supported). Kaadas Smart's advantage is review sentiment (47% vs 29%) and update cadence (every 11 days vs monthly). On price, rating, in-app purchases and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.2 for Kaadas Smart against 3.3 for 有幸Ulucky. That said, the two scores are not equally well evidenced: Kaadas Smart has 21 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 47% of Kaadas Smart's written reviews are positive against 29% of 有幸Ulucky's.

Kaadas Smart ships an update every 11 days, 有幸Ulucky monthly. The most recent releases landed on November 9, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Kaadas Smart | 有幸Ulucky |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (21 ratings)](https://appshunter.io/ios/app/kaadas-smart/id1155786023/reviews) | **[3.3 (3 ratings)](https://appshunter.io/ios/app/ulucky/id6448975745/reviews)** |
| Number of ratings | **21** | 3 |
| Positive reviews | **47.3% of reviews** | 29.2% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Monthly |
| Monetization | Ad-supported | **Free** |
| Size | 359 MB | 124 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Shenzhen Kaadas Intelligent Technology Co.,Ltd](https://appshunter.io/developer/1155786021) | [深圳市有幸健康有限公司](https://appshunter.io/developer/1687252698) |

## What reviewers say

### Kaadas Smart

[App page](https://appshunter.io/ios/app/kaadas-smart/id1155786023)

Enhance your home security with smart lock and cat-eye management. This app allows you to control and monitor your Kaadas smart devices remotely, ensuring peace of mind.

**Highlights:** Smart lock control, Smart cat-eye monitoring, Remote device management, Home security enhancement

**Features:** Vision Pro support

**In-app purchases:** none


### 有幸Ulucky

[App page](https://appshunter.io/ios/app/ulucky/id6448975745)

This app helps track menstrual cycles with accurate predictions and statistics. It also allows for temperature control, timing, and mode selection for a connected warming device, with shared reminders for partners.

**Highlights:** Menstrual cycle tracking, Period prediction and statistics, Menstrual flow and pain logging, Shared period reminders, Warming device temperature control, Warming device mode selection, Warming device usage history

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

**In-app purchases:** none


## Frequently asked questions

### Is Kaadas Smart free?

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

### Is 有幸Ulucky free?

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

### Which has better reviews, Kaadas Smart or 有幸Ulucky?

有幸Ulucky is rated higher. Kaadas Smart averages 3.2 out of 5 from 21 ratings, while 有幸Ulucky averages 3.3 from 3 ratings.

### Do Kaadas Smart or 有幸Ulucky have ads?

Kaadas Smart shows ads; 有幸Ulucky does not.

### Which is updated more often, Kaadas Smart or 有幸Ulucky?

Kaadas Smart ships an update every 11 days, and 有幸Ulucky monthly. Most recently, Kaadas Smart was updated on November 9, 2026 and 有幸Ulucky on November 7, 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.*