# INREII vs SDFly

The clearest difference is rating: SDFly at 2.3 against INREII's 2.0. SDFly also leads on update cadence (every 3 weeks vs every 2 months). INREII's advantage is ratings volume (36 vs 11). On price, review sentiment, 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.

SDFly holds the better App Store score, 2.3 against 2.0. Both are backed by a comparable volume of ratings — 36 and 11 respectively. Written reviews complicate that: 23% of INREII's written reviews are positive against 20% of SDFly's, so the app with the better star average is not the one people write more warmly about.

INREII ships an update every 2 months, SDFly every 3 weeks. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | INREII | SDFly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (36 ratings)](https://appshunter.io/ios/app/inreii/id1516239264/reviews) | **[2.3 (11 ratings)](https://appshunter.io/ios/app/sdfly/id1548259330/reviews)** |
| Number of ratings | **36** | 11 |
| Positive reviews | **23.4% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 64 MB | 40 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [InfiRay Technologies Co.,Ltd.](https://appshunter.io/developer/1516230719) | [Shenzhen SwellPro Technology Co.,LTD](https://appshunter.io/developer/1113943094) |

## What reviewers say

### INREII

[App page](https://appshunter.io/ios/app/inreii/id1516239264)

This app enables real-time infrared video preview, photo and video capture, and file management. It allows for FTP access, WiFi parameter configuration, and firmware updates. The app also provides product recommendations and supports automatic language switching.

**Highlights:** Real-time infrared video preview, Capture photos and videos, Local file preview and management, FTP file access, WiFi parameter settings, Device firmware updates, Automatic language switching

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Works well with specific devices (e.g., E3n, Liemke)
- 👍 Indispensable for certain camera models
- 👍 Transfers videos and pictures
- 👍 Custom reticles can be useful
- 👍 Some users find it works perfectly

**What reviewers complain about**

- 🐛 Connection issues
- 🐛 Slow and clunky performance
- 🐛 Difficulty finding and downloading media
- 🐛 App crashes on startup
- 🐛 Not working on newer iOS versions

**Reported bugs**

- App crashes on startup
- Connection between device and speed is bad
- Finding and downloading videos and pictures is terrible
- App not working on iPhone 16 Pro Max with iOS 26
- App won't connect to scope after last update

**Requested features**

- Add payment options for custom reticles (beyond PayPal)
- Improve custom reticle options and editing
- Allow editing custom reticles without device connection
- Add more reticle options and colors
- Improve app setup options for the scope


### SDFly

[App page](https://appshunter.io/ios/app/sdfly/id1548259330)

Control your drone with live HD viewing, adjust camera and gimbal settings, and plan complex flight missions. Share your aerial footage through live streaming on popular platforms. Supports joint operations with multiple devices.

**Highlights:** Live HD viewing, Live HD streaming, Aircraft and gimbal control, Mission planning, Various flight modes, Multi-device connection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is INREII free?

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

### Is SDFly free?

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

### Which has better reviews, INREII or SDFly?

SDFly is rated higher. INREII averages 2.0 out of 5 from 36 ratings, while SDFly averages 2.3 from 11 ratings.

### Do INREII or SDFly have ads?

Neither INREII nor SDFly shows ads.

### Which is updated more often, INREII or SDFly?

INREII ships an update every 2 months, and SDFly every 3 weeks. Most recently, INREII was updated on October 19, 2026 and SDFly on October 12, 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.*