# Progressive Identifier for ECP vs ABO

The clearest difference is rating: Progressive Identifier for ECP at 4.4 against ABO's 3.4. Progressive Identifier for ECP also leads on ads (none vs shown) and ratings volume (36 vs 5). ABO's advantage is in-app purchases (none vs 2) and review sentiment (25% vs 0%). On price and device support there is nothing between them.

Both are free to download. Progressive Identifier for ECP sells 2 in-app purchases, starting at $4.99 per month. ABO asks for nothing beyond the download.

Progressive Identifier for ECP holds the better App Store score, 4.4 against 3.4. That said, the two scores are not equally well evidenced: Progressive Identifier for ECP has 36 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 0% of Progressive Identifier for ECP's written reviews are positive against 25% of ABO's, so the app with the better star average is not the one people write more warmly about.

Progressive Identifier for ECP ships an update every 14 months, ABO every 3 months. The most recent releases landed on September 13, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Progressive Identifier for ECP | ABO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (36 ratings)](https://appshunter.io/ios/app/progressive-identifier-for-ecp/id1365601702/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/abo-ncle-certifications/id6741852627/reviews) |
| Number of ratings | **36** | 5 |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 20 MB | 51 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lens Shapers](https://appshunter.io/developer/1279463389) | [American Board of Opticianry & National Contact Lens Examiners](https://appshunter.io/developer/1795904773) |

## What reviewers say

### Progressive Identifier for ECP

[App page](https://appshunter.io/ios/app/progressive-identifier-for-ecp/id1365601702)

This app helps identify progressive lenses by their engravings or names. It provides detailed information on over 1200 lenses, including availability, materials, and fitting heights. Search visually or by text for engravings and lens details.

**Highlights:** Identify lenses by engraving or name, Detailed lens information (materials, fitting height), Search engravings visually or by text, Over 1200 lenses and engravings, Data for USA, Canada, Germany, UK, Includes digital, therapeutic, and anti-fatigue lenses

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


### ABO

[App page](https://appshunter.io/ios/app/abo-ncle-certifications/id6741852627)

Stay updated with your opticianry certifications and renewals. Access important documents, manage your digital wallet card with QR code, and register for exams. This app keeps you informed about news and events in the opticianry field.

**Highlights:** News Feed, Event Calendar, Digital Wallet Card with QR code, Certification Hub access, Certification Renewals, Exam Registration

**In-app purchases:** none


## Frequently asked questions

### Is Progressive Identifier for ECP free?

Progressive Identifier for ECP is free to download, with in-app purchases available.

### Is ABO free?

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

### Which has better reviews, Progressive Identifier for ECP or ABO?

Progressive Identifier for ECP is rated higher. Progressive Identifier for ECP averages 4.4 out of 5 from 36 ratings, while ABO averages 3.4 from 5 ratings.

### Do Progressive Identifier for ECP or ABO have ads?

ABO shows ads; Progressive Identifier for ECP does not.

### Which is updated more often, Progressive Identifier for ECP or ABO?

Progressive Identifier for ECP ships an update every 14 months, and ABO every 3 months. Most recently, Progressive Identifier for ECP was updated on September 13, 2026 and ABO on September 4, 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.*