# RDFit vs HiWatch Plus

The clearest difference is in-app purchases: RDFit at none against HiWatch Plus's 6. RDFit also leads on ads (none vs shown) and review sentiment (45% vs 11%). On price, rating, update cadence and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 2.8 for RDFit against 2.7 for HiWatch Plus. That said, the two scores are not equally well evidenced: RDFit has 3.1K ratings behind it against 237, so its average is the more settled of the two. Written reviews are what separate them: 45% of RDFit's written reviews are positive against 11% of HiWatch Plus's.

RDFit ships an update fortnightly, HiWatch Plus every 2 weeks. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | RDFit | HiWatch Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (3.1K ratings)](https://appshunter.io/ios/app/rdfit/id1493359248/reviews)** | [2.7 (237 ratings)](https://appshunter.io/ios/app/hiwatch-plus/id1614589899/reviews) |
| Number of ratings | **3.1K** | 237 |
| Positive reviews | **45.5% of reviews** | 10.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 290 MB | 106 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市润德智能通讯科技有限公司](https://appshunter.io/developer/1761719783) | [深圳市威尔健康管理科技有限公司](https://appshunter.io/developer/1510506947) |

## What reviewers say

### RDFit

[App page](https://appshunter.io/ios/app/rdfit/id1493359248)

This app synchronizes with HealthKit to read and write health data. It's developed by a company specializing in smart wearables and electronic products.

**Highlights:** HealthKit integration, Read Health data, Write Health data, Smart wearable device support, Electronic product integration

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- ⌚ Beautiful watch design and appearance
- ❤️ Health monitoring features (blood sugar, blood pressure)
- 🎨 Customizable watch faces available
- 📱 Good app connectivity when working properly

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 📲 Poor notification system (missing SMS/text messages)
- 🔌 Limited watch face customization (only one downloadable at a time)
- 🔗 Unreliable Bluetooth connection and pairing issues
- 📊 Inaccurate health metrics and sensor readings

**Reported bugs**

- App crashes on startup and during synchronization
- App crashes after recent updates
- Watch locks for no reason and cannot unlock
- GPS feature not connecting despite proper setup
- Automatic Bluetooth connection fails

**Requested features**

- Add more watch face options and styles
- Allow multiple watch faces to be downloaded simultaneously
- Implement SMS/text message notifications
- Add Apple Watch-style watch faces
- Enable custom watch face editing with more customization options


### 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 RDFit free?

RDFit 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, RDFit or HiWatch Plus?

RDFit is rated higher. RDFit averages 2.8 out of 5 from 3.1K ratings, while HiWatch Plus averages 2.7 from 237 ratings.

### Do RDFit or HiWatch Plus have ads?

HiWatch Plus shows ads; RDFit does not.

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

RDFit ships an update fortnightly, and HiWatch Plus every 2 weeks. Most recently, RDFit was updated on October 22, 2026 and HiWatch Plus on October 23, 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.*