# PD Meter vs PD Meter

The clearest difference is rating: PD Meter at 3.0 against PD Meter's 2.0. PD Meter also leads on update cadence (every 4 days vs monthly). PD Meter's advantage is ads (none vs shown) and review sentiment (25% vs 0%). On price, ratings volume 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.

PD Meter holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews complicate that: 25% of PD Meter's written reviews are positive against 0% of PD Meter's, so the app with the better star average is not the one people write more warmly about.

PD Meter ships an update monthly, PD Meter every 4 days. The most recent releases landed on October 22, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | PD Meter | PD Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/pd-meter/id1497268134/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/pd-meter-pupillary-distance/id6784830581/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | **Free** | Ad-supported |
| Size | 93 MB | 95 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [杭州美戴科技有限公司](https://appshunter.io/developer/1123653009) | [heekyung moon](https://appshunter.io/developer/6779193748) |

## What reviewers say

### PD Meter

[App page](https://appshunter.io/ios/app/pd-meter/id1497268134)

This application uses AI technology to measure interpupillary distance accurately. It offers a contactless method for measurement, avoiding close proximity required by traditional devices. Users can manually correct any AI recognition errors for precise results.

**Highlights:** AI-powered binocular interpupillary measurement, Contactless measurement method, High accuracy (0.1mm), Manual error correction, Supports FPD and NPD measurements

**Features:** macOS Compatibility

**In-app purchases:** none


### PD Meter

[App page](https://appshunter.io/ios/app/pd-meter-pupillary-distance/id6784830581)

Measure your pupillary distance (PD) for online glasses orders using your phone's camera and a standard card for scale. Get a quick, repeatable estimate from home without needing a ruler or another person.

**Highlights:** Measure PD with front-camera selfie, Use standard card for scale, Get PD in millimeters, Guided flow with on-screen tips, Re-measure and average results

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PD Meter free?

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

### Is PD Meter free?

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

### Which has better reviews, PD Meter or PD Meter?

PD Meter is rated higher. PD Meter averages 2.0 out of 5 from 4 ratings, while PD Meter averages 3.0 from 2 ratings.

### Do PD Meter or PD Meter have ads?

PD Meter shows ads; PD Meter does not.

### Which is updated more often, PD Meter or PD Meter?

PD Meter ships an update monthly, and PD Meter every 4 days. Most recently, PD Meter was updated on October 22, 2026 and PD Meter on November 1, 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.*