# PDCheck AR vs ArcX

The clearest difference is review sentiment: PDCheck AR at 70% against ArcX's 0%. PDCheck AR also leads on rating (4.9 vs 1.7) and in-app purchases (none vs 2). ArcX's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. ArcX sells 2 in-app purchases, starting at $4.99 per month. PDCheck AR asks for nothing beyond the download.

PDCheck AR holds the better App Store score, 4.9 against 1.7. That said, the two scores are not equally well evidenced: PDCheck AR has 4.1K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 70% of PDCheck AR's written reviews are positive against 0% of ArcX's.

PDCheck AR ships an update every 3 months, ArcX every 3 weeks. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | PDCheck AR | ArcX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (4.1K ratings)](https://appshunter.io/ios/app/pdcheck-ar/id1563806777/reviews)** | [1.7 (7 ratings)](https://appshunter.io/ios/app/arcx/id6444228322/reviews) |
| Number of ratings | **4.1K** | 7 |
| Positive reviews | **70.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 18 MB | 80 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EyeQue Corporation](https://appshunter.io/developer/1127114607) | [ArcX Technology Ltd](https://appshunter.io/developer/1525351498) |

## What reviewers say

### PDCheck AR

[App page](https://appshunter.io/ios/app/pdcheck-ar/id1563806777)

Instantly measure your pupillary distance using your phone's camera and augmented reality. This app provides accurate measurements for both distance and near viewing, essential for ordering glasses or adjusting VR headsets. Compatible with Face ID-enabled iPhones.

**Highlights:** Measures far pupillary distance, Measures near pupillary distance, No external tools required, Compatible with Face ID iPhones, Share results via email, Useful for ordering eyewear, Adjust VR headset fit

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and easy to use
- 👍 Straight-forward, no fuss
- 👍 Accurate and consistent measurements
- 👍 Detailed measurements (far PD, near PD, individual eye PDs)
- 👍 Convenient for online orders

**What reviewers complain about**

- 🐛 Inconsistent or inaccurate measurements
- 🐛 Doesn't work on some devices

**Reported bugs**

- Measure button not working
- Measurements changing every time

**Requested features**

- Dark mode option
- Ability to save and share measurements


### ArcX

[App page](https://appshunter.io/ios/app/arcx/id6444228322)

Control your smart ring, receive personalized music recommendations, and manage your profile. Features include SOS for emergencies and integration with smartwatches for heart rate-based music.

**Highlights:** Personalized music recommendations, Smart ring configuration, SOS emergency feature, Heart rate-based music adaptation, Profile management, Dashboard control hub

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Arcx Premium | $4.99 | per month |
| Arcx Premium | $49.99 | per year |


## Frequently asked questions

### Is PDCheck AR free?

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

### Is ArcX free?

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

### Which has better reviews, PDCheck AR or ArcX?

PDCheck AR is rated higher. PDCheck AR averages 4.9 out of 5 from 4.1K ratings, while ArcX averages 1.7 from 7 ratings.

### Do PDCheck AR or ArcX have ads?

Neither PDCheck AR nor ArcX shows ads.

### Which is updated more often, PDCheck AR or ArcX?

PDCheck AR ships an update every 3 months, and ArcX every 3 weeks. Most recently, PDCheck AR was updated on October 30, 2026 and ArcX on October 27, 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.*