# HiWatch vs RDFit

HiWatch and RDFit both sit at 2.7 stars, but that hides the real split: 45% of RDFit's written reviews are positive against 10% of HiWatch's. RDFit also leads on ratings volume (3.1K vs 450) and update cadence (fortnightly vs monthly). HiWatch's advantage is iOS requirement (9.0 vs 13.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 2.7 for HiWatch against 2.8 for RDFit. That said, the two scores are not equally well evidenced: RDFit has 3.1K ratings behind it against 450, so its average is the more settled of the two. Written reviews are what separate them: 10% of HiWatch's written reviews are positive against 45% of RDFit's.

HiWatch ships an update monthly, RDFit fortnightly. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | HiWatch | RDFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (450 ratings)](https://appshunter.io/ios/app/hiwatch/id1254345922/reviews) | **[2.8 (3.1K ratings)](https://appshunter.io/ios/app/rdfit/id1493359248/reviews)** |
| Number of ratings | 450 | **3.1K** |
| Positive reviews | 10.4% of reviews | **45.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | Free |
| Size | 120 MB | 290 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市威尔健康管理科技有限公司](https://appshunter.io/developer/1510506947) | [深圳市润德智能通讯科技有限公司](https://appshunter.io/developer/1761719783) |

## What reviewers say

### HiWatch

[App page](https://appshunter.io/ios/app/hiwatch/id1254345922)

Connect your iPhone to a sports watch for seamless message syncing and health tracking. Monitor steps, sleep, and heart rate, with features like anti-lost and find my iPhone capabilities. Integrates with HealthKit for comprehensive health data viewing.

**Highlights:** Sync iPhone messages, Track steps and sleep, Monitor heart rate, Anti-lost function, Find my iPhone, HealthKit integration

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

**In-app purchases:** none

**What reviewers like**

- ⭐ Customizable watch faces
- 👍 Easy Bluetooth connection
- 🚀 Responsive app performance

**What reviewers complain about**

- 🐛 Connectivity issues
- 💬 Lack of language support
- 🔋 Poor battery life
- 📱 Limited app functionality

**Reported bugs**

- Sync issues between watch and phone
- Registration/login problems
- Unexpected app crashes

**Requested features**

- Add more watch face options
- Improve language support
- Expand app capabilities
- Enhance battery optimization


### 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


## Frequently asked questions

### Is HiWatch free?

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

### Is RDFit free?

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

### Which has better reviews, HiWatch or RDFit?

RDFit is rated higher. HiWatch averages 2.7 out of 5 from 450 ratings, while RDFit averages 2.8 from 3.1K ratings.

### Do HiWatch or RDFit have ads?

Neither HiWatch nor RDFit shows ads.

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

HiWatch ships an update monthly, and RDFit fortnightly. Most recently, HiWatch was updated on October 22, 2026 and RDFit on October 26, 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.*