# EyeDistance PD vs READI Response

The clearest difference is update cadence: READI Response at every 2 weeks against EyeDistance PD's every 2 months. READI Response also leads on iOS requirement (14.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EyeDistance PD ships an update every 2 months, READI Response every 2 weeks. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | EyeDistance PD | READI Response |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (8 ratings)](https://appshunter.io/ios/app/eyedistance-pd/id1539320895/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 25 MB | 18 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [St Stolution](https://appshunter.io/developer/1539320897) | [Elemodo Software, LLC](https://appshunter.io/developer/460437805) |

## What reviewers say

### EyeDistance PD

[App page](https://appshunter.io/ios/app/eyedistance-pd/id1539320895)

Easily measure your pupillary distance (PD) without any special equipment. This utility app provides a complete report via email, essential for correctly aligning eyeglass lenses with your eyes.

**Highlights:** Instant PD measurement, No accessories required, Email report generation, Eyeglass lens alignment aid, Works on iPhone X and newer, iPad

**Features:** Vision Pro support

**In-app purchases:** none


### READI Response

[App page](https://appshunter.io/ios/app/readi-response/id6744942791)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EyeDistance PD free?

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

### Is READI Response free?

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

### Do EyeDistance PD or READI Response have ads?

Neither EyeDistance PD nor READI Response shows ads.

### Which is updated more often, EyeDistance PD or READI Response?

EyeDistance PD ships an update every 2 months, and READI Response every 2 weeks. Most recently, EyeDistance PD was updated on November 3, 2026 and READI Response on October 28, 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.*