# SIONYX vs FDFly

The clearest difference is rating: SIONYX at 2.7 against FDFly's 1.0. SIONYX also leads on review sentiment (27% vs 17%) and ratings volume (15 vs 4). FDFly's advantage is update cadence (every 11 days vs every 5 months) and iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SIONYX holds the better App Store score, 2.7 against 1.0. Both are backed by a comparable volume of ratings — 15 and 4 respectively. Written reviews point the same way: 27% of SIONYX's written reviews are positive against 17% of FDFly's.

SIONYX ships an update every 5 months, FDFly every 11 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SIONYX | FDFly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (15 ratings)](https://appshunter.io/ios/app/sionyx/id1642888573/reviews)** | [1.0 (4 ratings)](https://appshunter.io/ios/app/fdfly/id6448317788/reviews) |
| Number of ratings | **15** | 4 |
| Positive reviews | **27.3% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 11 days** |
| Monetization | Free | Free |
| Size | 128 MB | 46 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SiOnyx, LLC](https://appshunter.io/developer/1418868781) | [Shenzhen SwellPro Technology Co.,LTD](https://appshunter.io/developer/1113943094) |

## What reviewers say

### SIONYX

[App page](https://appshunter.io/ios/app/sionyx/id1642888573)

Stream video and control your SIONYX Nightwave and OPSIN devices. This app allows for seamless command and upgrade functions for your compatible night vision equipment.

**Highlights:** Video streaming, Command and control functions, Device upgrades, Nightwave device support, OPSIN device support

**Features:** macOS Compatibility

**In-app purchases:** none


### FDFly

[App page](https://appshunter.io/ios/app/fdfly/id6448317788)

This app enables pilots to manage aircraft settings and plan flight missions. It offers full compatibility and functionality for specific drone series.

**Highlights:** Aircraft settings adjustment, Waypoint mission planning, Mission execution, SwellPro Fisherman series compatibility, Full support and functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SIONYX free?

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

### Is FDFly free?

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

### Which has better reviews, SIONYX or FDFly?

SIONYX is rated higher. SIONYX averages 2.7 out of 5 from 15 ratings, while FDFly averages 1.0 from 4 ratings.

### Do SIONYX or FDFly have ads?

Neither SIONYX nor FDFly shows ads.

### Which is updated more often, SIONYX or FDFly?

SIONYX ships an update every 5 months, and FDFly every 11 days. Most recently, SIONYX was updated on October 6, 2026 and FDFly on October 24, 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.*