# Gains Performance Studio vs PDCheck AR

The clearest difference is review sentiment: Gains Performance Studio at 100% against PDCheck AR's 70%. Gains Performance Studio also leads on device support (4 vs 2). PDCheck AR's advantage is iOS requirement (13.0 vs 15.5). On price, update cadence, 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.

Gains Performance Studio ships an update every 6 weeks, PDCheck AR every 3 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Gains Performance Studio | PDCheck AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (4.1K ratings)](https://appshunter.io/ios/app/pdcheck-ar/id1563806777/reviews)** |
| Number of ratings | — | **4.1K** |
| Positive reviews | **100.0% of reviews** | 70.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 169 MB | 18 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gains Performance Studio](https://appshunter.io/developer/1553307327) | [EyeQue Corporation](https://appshunter.io/developer/1127114607) |

## What reviewers say

### Gains Performance Studio

[App page](https://appshunter.io/ios/app/gains-performance-studio/id1553307325)

Track workouts, meals, and body measurements with personalized guidance from your coach. Set goals, stay committed with progress tracking, and receive reminders for activities. Connect wearable devices for seamless data syncing.

**Highlights:** Workout and meal tracking, Progress monitoring, Goal setting, Nutrition management, Real-time coach messaging, Body measurement tracking, Wearable device integration

**Features:** Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Gains Performance Studio free?

Gains Performance Studio is free to download, with no in-app purchases.

### Is PDCheck AR free?

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

### Do Gains Performance Studio or PDCheck AR have ads?

Neither Gains Performance Studio nor PDCheck AR shows ads.

### Which is updated more often, Gains Performance Studio or PDCheck AR?

Gains Performance Studio ships an update every 6 weeks, and PDCheck AR every 3 months. Most recently, Gains Performance Studio was updated on October 24, 2026 and PDCheck AR on October 30, 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.*