# 守護BBCall vs U居服

The clearest difference is review sentiment: 守護BBCall at 82% against U居服's 0%. U居服's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.6). On price, update cadence, ads 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.

守護BBCall ships an update every 2 weeks, U居服 weekly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 守護BBCall | U居服 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **82.4% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 6 MB | 64 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Changhua County Government Department of Social Affairs](https://appshunter.io/developer/1469031670) | [U-ARK Technology Co., Ltd.](https://appshunter.io/developer/1453627595) |

## What reviewers say

### 守護BBCall

[App page](https://appshunter.io/ios/app/bbcall/id1271261432)

This app helps locate elderly individuals by transmitting their device's Bluetooth signal. It allows users to search for nearby seniors and anonymously contact their registered emergency contacts or care facilities for assistance.

**Highlights:** Device location tracking via Bluetooth, Anonymous contact of emergency contacts, Search for nearby elderly individuals, Information security protection, Assistance for seniors in need

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

**In-app purchases:** none


### U居服

[App page](https://appshunter.io/ios/app/u/id1558792356)

This app allows home care service providers to manage their schedules, clock in and out of services, and select service items. This information is then used by management for verification and accounting purposes.

**Highlights:** View schedule records, Service sign-in and sign-out, Select service items, Management verification, Accounting processing

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

**In-app purchases:** none


## Frequently asked questions

### Is 守護BBCall free?

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

### Is U居服 free?

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

### Do 守護BBCall or U居服 have ads?

Neither 守護BBCall nor U居服 shows ads.

### Which is updated more often, 守護BBCall or U居服?

守護BBCall ships an update every 2 weeks, and U居服 weekly. Most recently, 守護BBCall was updated on November 3, 2026 and U居服 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.*