# ArcAir vs UseePlus

The clearest difference is review sentiment: ArcAir at 100% against UseePlus's 25%. ArcAir also leads on rating (4.0 vs 2.4). UseePlus's advantage is in-app purchases (none vs 2) and ratings volume (303 vs 8). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ArcAir sells 2 one-off in-app purchases. UseePlus asks for nothing beyond the download.

ArcAir holds the better App Store score, 4.0 against 2.4. That said, the two scores are not equally well evidenced: UseePlus has 303 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of ArcAir's written reviews are positive against 25% of UseePlus's.

ArcAir ships an update every 5 months, UseePlus every 2 months. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ArcAir | UseePlus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/arcair/id1133492319/reviews)** | [2.4 (303 ratings)](https://appshunter.io/ios/app/useeplus/id6443842645/reviews) |
| Number of ratings | 8 | **303** |
| Positive reviews | **100.0% of reviews** | 25.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 33 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hamilton Bonaduz AG](https://appshunter.io/developer/530886485) | [亮 连](https://appshunter.io/developer/1687605002) |

## What reviewers say

### ArcAir

[App page](https://appshunter.io/ios/app/arcair/id1133492319)

This app facilitates the online monitoring and visualization of various sensor data for biotechnological processes. It allows wireless communication with multiple sensors simultaneously and provides central data management, reporting, and validation for sensor calibration and configuration, supporting GMP guidelines.

**Highlights:** Online sensor monitoring, Data visualization, Wireless sensor communication, Central data management, Sensor calibration validation, Paperless workflow support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ArcAir Basic Version | Free | one-time |
| ArcAir Advanced Version | $199.99 | one-time |


### UseePlus

[App page](https://appshunter.io/ios/app/useeplus/id6443842645)

This application allows you to view your phone's photo album files directly on your mobile device. It connects via USB to your phone, providing easy access to your media library.

**Highlights:** Connects via USB, View photo album files, Control software for MFI devices, Access phone media library

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Works great on iPhone
- 👍 Simple and easy to use
- 🔍 Good camera quality
- 🎥 Able to take photos and videos

**What reviewers complain about**

- 🐛 Frequent disconnections
- 🔌 Compatibility issues with newer iPhones
- 🔍 Poor image quality at higher magnification
- 🔒 Requires full photo library access

**Reported bugs**

- App freezes or crashes frequently
- Device not detected even when connected
- Inconsistent performance after software updates

**Requested features**

- Ability to switch between front and side cameras
- Option to save photos/videos without full library access
- Improved focus and zoom controls


## Frequently asked questions

### Is ArcAir free?

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

### Is UseePlus free?

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

### Which has better reviews, ArcAir or UseePlus?

ArcAir is rated higher. ArcAir averages 4.0 out of 5 from 8 ratings, while UseePlus averages 2.4 from 303 ratings.

### Do ArcAir or UseePlus have ads?

Neither ArcAir nor UseePlus shows ads.

### Which is updated more often, ArcAir or UseePlus?

ArcAir ships an update every 5 months, and UseePlus every 2 months. Most recently, ArcAir was updated on September 20, 2026 and UseePlus on September 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.*