# SZOS vs HiWatch Plus

The clearest difference is in-app purchases: SZOS at none against HiWatch Plus's 6. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. HiWatch Plus sells 6 one-off in-app purchases. SZOS asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 2.8 for SZOS against 2.7 for HiWatch Plus. Both are backed by a comparable volume of ratings — 105 and 235 respectively. Written reviews are what separate them: 5% of SZOS's written reviews are positive against 11% of HiWatch Plus's.

SZOS ships an update every 3 weeks, HiWatch Plus every 2 weeks. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SZOS | HiWatch Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (105 ratings)](https://appshunter.io/ios/app/szos/id1543848875/reviews)** | [2.7 (235 ratings)](https://appshunter.io/ios/app/hiwatch-plus/id1614589899/reviews) |
| Number of ratings | 105 | **235** |
| Positive reviews | 5.3% of reviews | **10.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 70 MB | 106 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [晟 谷](https://appshunter.io/developer/1543671031) | [深圳市威尔健康管理科技有限公司](https://appshunter.io/developer/1510506947) |

## What reviewers say

### SZOS

[App page](https://appshunter.io/ios/app/szos/id1543848875)

This app syncs with a smart watch to track your daily activity, including steps, heart rate, and sleep patterns. It provides insights into your health and fitness metrics.

**Highlights:** Step tracking, Heart rate monitoring, Sleep analysis, Syncs with smart watch, Activity mode

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

**In-app purchases:** none


### HiWatch Plus

[App page](https://appshunter.io/ios/app/hiwatch-plus/id1614589899)

This app connects to smart wristbands via Bluetooth to monitor and evaluate user activity data, including exercise and sleep quality. It helps users understand and adjust their daily routines for a healthier lifestyle. Data can be synced with HealthKit.

**Highlights:** Bluetooth connectivity to smart wristbands, Exercise data detection and evaluation, Sleep quality monitoring, HealthKit data synchronization, Lifestyle adjustment assistance

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HiWathchPlus表盘购买 | $0.29 | one-time |
| HiWathchPlus表盘购买 | $0.49 | one-time |
| HiWathchPlus表盘购买 | $0.99 | one-time |
| HiWathchPlus表盘购买 | $1.99 | one-time |
| HiWathchPlus表盘购买 | $8.99 | one-time |
| HiWathchPlus表盘购买 | $24.99 | one-time |

**What reviewers like**

- 👍 Good watch for the price
- ✨ Useful features like heart rate and blood pressure monitoring
- 💪 Durable and well-designed

**What reviewers complain about**

- 🐛 Frequent app crashes and disconnections
- 🤖 Difficulty connecting and syncing with devices
- ⌚ Lack of customization options like 12-hour time format
- 📱 Poor app functionality and user experience

**Reported bugs**

- App crashes when trying to access device, profile, or sports tabs
- Watch disconnects frequently and won't stay connected
- Inaccurate health and fitness tracking data
- Inability to change watch settings like time format

**Requested features**

- Add more watch faces and customization options
- Improve app stability and connectivity
- Introduce 12-hour time format
- Expand app features and integrations


## Frequently asked questions

### Is SZOS free?

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

### Is HiWatch Plus free?

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

### Which has better reviews, SZOS or HiWatch Plus?

SZOS is rated higher. SZOS averages 2.8 out of 5 from 105 ratings, while HiWatch Plus averages 2.7 from 235 ratings.

### Do SZOS or HiWatch Plus have ads?

Both SZOS and HiWatch Plus show ads.

### Which is updated more often, SZOS or HiWatch Plus?

SZOS ships an update every 3 weeks, and HiWatch Plus every 2 weeks. Most recently, SZOS was updated on October 9, 2026 and HiWatch Plus on October 17, 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.*