# Eye4 vs SAP HD

The clearest difference is rating: Eye4 at 4.4 against SAP HD's 2.3. Eye4 also leads on ratings volume (2K vs 4) and update cadence (monthly vs every 2 months). SAP HD's advantage is in-app purchases (none vs 16) and ads (none vs shown). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Eye4 sells 16 one-off in-app purchases. SAP HD asks for nothing beyond the download.

Eye4 holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: Eye4 has 2K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 27% of Eye4's written reviews are positive against 33% of SAP HD's, so the app with the better star average is not the one people write more warmly about.

Eye4 ships an update monthly, SAP HD every 2 months. The most recent releases landed on September 25, 2026 and June 6, 2026 respectively.

## The numbers

| Metric | Eye4 | SAP HD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (2K ratings)](https://appshunter.io/ios/app/eye4/id642266858/reviews)** | [2.3 (4 ratings)](https://appshunter.io/ios/app/sap-hd/id698475227/reviews) |
| Number of ratings | **2K** | 4 |
| Positive reviews | 27.0% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 199 MB | 111 MB |
| Requires iOS | 10.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Vstarcam Technology Co., Ltd.](https://appshunter.io/developer/535476497) | [锐波 苏](https://appshunter.io/developer/1493483893) |

## What reviewers say

### Eye4

[App page](https://appshunter.io/ios/app/eye4/id642266858)

This application allows users to remotely monitor and manage IP cameras, smart WiFi units, and smart home systems. It provides a centralized platform for viewing live feeds and controlling connected devices.

**Highlights:** Remote IP camera monitoring, Smart WiFi unit control, Smart home system management, Live feed viewing, Device control

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eye4 monthly card-7(tryout) | $0.99 | one-time |
| 99  Eye4 coupons | $0.99 | one-time |
| Eye4 monthly card(SA)-7 | $2.99 | one-time |
| Eye4 monthly card-7 | $2.99 | one-time |
| Eye4 monthly card(CN)-7 | $2.99 | one-time |
| Eye4 monthly card-7 | $4.99 | one-time |
| Eye4 monthly card(EU)-7 | $4.99 | one-time |
| 499  Eye4 coupons | $4.99 | one-time |
| Eye4 monthly card(SA)- 30 | $5.99 | one-time |
| Eye4 monthly card- 30 | $12.99 | one-time |
| Eye4 half year card(SA) - 7 | $13.99 | one-time |
| Eye4 half year card - 7 | $13.99 | one-time |
| Eye4 yearly card(SA)-7 | $24.99 | one-time |
| Eye4 yearly card - 7 | $24.99 | one-time |
| Eye4 half year card(USA)-7 | $28.99 | one-time |
| Eye4 yearly card-7 | $49.99 | one-time |

**What reviewers like**

- 🚀 Easy to set up
- 👍 Good video quality
- 🔒 Reliable security camera
- 🚀 Responsive app

**What reviewers complain about**

- 🐛 Frequent disconnections
- 🐛 Buggy app updates
- 🔒 Privacy concerns
- 👎 Poor customer support
- 🐛 Unstable app performance

**Reported bugs**

- App crashes on launch
- Unable to connect to camera
- Recorded videos not saving properly
- Notifications not working

**Requested features**

- Option to delete multiple recorded videos
- Ability to configure motion detection sensitivity
- Improved notification system
- Time/date stamp on recorded videos


### SAP HD

[App page](https://appshunter.io/ios/app/sap-hd/id698475227)

This security app provides real-time monitoring for your home, shop, or office. It allows you to keep track of important locations and ensures your peace of mind. Stay in control with this powerful security solution.

**Highlights:** Real-time monitoring, Home security, Shop security, Office security, Time keeper functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Eye4 free?

Eye4 is free to download, with in-app purchases available.

### Is SAP HD free?

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

### Which has better reviews, Eye4 or SAP HD?

Eye4 is rated higher. Eye4 averages 4.4 out of 5 from 2K ratings, while SAP HD averages 2.3 from 4 ratings.

### Do Eye4 or SAP HD have ads?

Eye4 shows ads; SAP HD does not.

### Which is updated more often, Eye4 or SAP HD?

Eye4 ships an update monthly, and SAP HD every 2 months. Most recently, Eye4 was updated on September 25, 2026 and SAP HD on June 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*