# Fly Go 4 vs HS Sirius

The clearest difference is review sentiment: HS Sirius at 71% against Fly Go 4's 36%. HS Sirius also leads on in-app purchases (none vs 8) and ads (none vs shown). Fly Go 4's advantage is rating (4.1 vs 3.7) and ratings volume (105 vs 11). On price, update cadence and device support there is nothing between them.

Both are free to download. Fly Go 4 sells 8 in-app purchases, starting at $7.99 per 7 days. HS Sirius asks for nothing beyond the download.

Fly Go 4 holds the better App Store score, 4.1 against 3.7. That said, the two scores are not equally well evidenced: Fly Go 4 has 105 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 36% of Fly Go 4's written reviews are positive against 71% of HS Sirius's, so the app with the better star average is not the one people write more warmly about.

Fly Go 4 ships an update every 4 weeks, HS Sirius every 3 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Fly Go 4 | HS Sirius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (105 ratings)](https://appshunter.io/ios/app/fly-go-4-drone-mobile-camera/id6470186052/reviews)** | [3.7 (11 ratings)](https://appshunter.io/ios/app/hs-sirius/id6478848481/reviews) |
| Number of ratings | **105** | 11 |
| Positive reviews | 35.7% of reviews | **71.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 192 MB | 146 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [COOLDEV CO., LTD](https://appshunter.io/developer/1629570682) | [HOLY STONE TECHNOLOGY Co.,Ltd.](https://appshunter.io/developer/1471499018) |

## What reviewers say

### Fly Go 4

[App page](https://appshunter.io/ios/app/fly-go-4-drone-mobile-camera/id6470186052)

Control your drone with advanced flight features and real-time HD video transmission. Explore intelligent flight modes for professional-quality footage and track flight data. Compatible with a wide range of drone models.

**Highlights:** Advanced flight controls, Real-time HD video transmission, Smart flight modes (ActiveTrack, QuickShot), Intuitive user interface, Comprehensive flight data logging, Wide drone model compatibility

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Standard | $7.99 | per 7 days |
| Monthly | $9.99 | per month |
| Monthly | $9.99 | per month |
| Yearly | $39.99 | per year |
| Yearly | $39.99 | per year |
| Yearly One-time Discount | $45.49 | per year |
| Lifetime One-time Discount | $49.99 | one-time |
| Lifetime | $69.99 | one-time |


### HS Sirius

[App page](https://appshunter.io/ios/app/hs-sirius/id6478848481)

Control your drone for aerial photography with this app. It offers features like smart takeoff/landing, trajectory flight, and HD live video transmission to help you capture stunning shots.

**Highlights:** Drone control via USB, Smart takeoff and landing, Precise trajectory flight, HD real-time video transmission, Aerial photography tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fly Go 4 free?

Fly Go 4 is free to download, with in-app purchases available.

### Is HS Sirius free?

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

### Which has better reviews, Fly Go 4 or HS Sirius?

Fly Go 4 is rated higher. Fly Go 4 averages 4.1 out of 5 from 105 ratings, while HS Sirius averages 3.7 from 11 ratings.

### Do Fly Go 4 or HS Sirius have ads?

Fly Go 4 shows ads; HS Sirius does not.

### Which is updated more often, Fly Go 4 or HS Sirius?

Fly Go 4 ships an update every 4 weeks, and HS Sirius every 3 weeks. Most recently, Fly Go 4 was updated on October 24, 2026 and HS Sirius on October 20, 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.*