EyeDistance PD vs READI Response
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EyeDistance PD
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.
- Instant PD measurement
- No accessories required
- Email report generation
- Eyeglass lens alignment aid
- Works on iPhone X and newer, iPad
Read full descriptionHide full description
Instant PD calculator without any accessories. The only app that sends you complete report by email. PD (pupillary distance) measurement is used to properly align the centre of the eyeglass lenses with the centre of the customer's eyes. Works on Iphone X or newer and Ipad
READI Response
Read full descriptionHide full description
With the READI Response app, for the firs time you have the ability to request a rapid incident investigation anywhere in the United States in record time. With just a few clicks in the READI Response app you are connected to the READI Network of professional investigators for any kind of incident. For example a driver has an accident in a remote location in the middle of the night, they open the READI Response app and in minutes they are connected to an investigator. The driver the investigator and a supervisor can see in real time what is happening. They can all message each other in the app and in the online portal. When the investigation is complete, a minute-by-minute and step by step report is available with images of the report and findings. If applicable the driver and investigator can take pictures of the scene and load it into the report. This is truly the first time that a carrier has a chance of meeting the very tight requirements for post-accident investigations. READI Response has one of the largest nationwide network of investigators to serve all of your safety and compliance needs.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | EyeDistance PD | READI Response |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (8 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | St Stolution | Elemodo Software, LLC |
In-app purchases
EyeDistance PD
No in-app purchases
READI Response
No in-app purchases
Questions
Is EyeDistance PD free?
Is READI Response free?
Do EyeDistance PD or READI Response have ads?
Which is updated more often, EyeDistance PD or READI Response?
Other comparisons
