# Pupil Distance Meter vs Chi Trainer

The clearest difference is in-app purchases: Chi Trainer at none against Pupil Distance Meter's 1. Chi Trainer also leads on iOS requirement (13.0.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Pupil Distance Meter sells 1 one-off in-app purchase. Chi Trainer asks for nothing beyond the download.

## The numbers

| Metric | Pupil Distance Meter | Chi Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (607 ratings)](https://appshunter.io/ios/app/pupil-distance-meter-eye-pd/id1638731689/reviews)** | — |
| Number of ratings | **607** | — |
| Positive reviews | 15.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 20 MB |
| Requires iOS | 15.6 | **13.0.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.](https://appshunter.io/developer/867175889) | [Chi Trainer LLC](https://appshunter.io/developer/1895032062) |

## What reviewers say

### Pupil Distance Meter

[App page](https://appshunter.io/ios/app/pupil-distance-meter-eye-pd/id1638731689)

Measure your pupillary distance accurately using augmented reality and your device's advanced camera. This app provides measurements for both near and far sight, essential for prescription eyeglasses and VR headsets. Keep a history of your measurements for easy reference.

**Highlights:** AR pupillary distance measurement, TrueDepth Camera integration, Near and far sight measurements, Measurement history, Real-time results

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pupil Distance Premium | $2.99 | one-time |


### Chi Trainer

[App page](https://appshunter.io/ios/app/chi-trainer/id6762829005)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pupil Distance Meter free?

Pupil Distance Meter is free to download, with in-app purchases available.

### Is Chi Trainer free?

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

### Do Pupil Distance Meter or Chi Trainer have ads?

Neither Pupil Distance Meter nor Chi Trainer shows ads.

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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.*