# AB Library vs LightingAssessor

AB Library and LightingAssessor both sit at 5.0 stars, but that hides the real split: 100% of LightingAssessor's written reviews are positive against 67% of AB Library's. LightingAssessor also leads on update cadence (every 3 weeks vs every 10 months) and ratings volume (3 vs 1). AB Library's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 14.0). On price, rating, ads 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.

On the App Store both sit at effectively the same score — 5.0 for AB Library against 5.0 for LightingAssessor. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 67% of AB Library's written reviews are positive against 100% of LightingAssessor's.

AB Library ships an update every 10 months, LightingAssessor every 3 weeks. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | AB Library | LightingAssessor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ab-library/id484660000/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/lightingassessor/id1454732408/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 23 MB | 12 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Acuity Brands Lighting, Inc](https://appshunter.io/developer/384447835) | [X20 LLC](https://appshunter.io/developer/997389757) |

## What reviewers say

### AB Library

[App page](https://appshunter.io/ios/app/ab-library/id484660000)

Access the latest marketing collateral and product literature from a leading lighting solutions provider. Quickly find product information, specification sheets, and photometric data. Share catalog pages and locate sales representatives.

**Highlights:** Up-to-date product information, Search by product name/catalog number, Email/share catalog pages, Access specification sheets, Create bookmarks and notes, Find related products, Locate sales representatives

**Features:** macOS Compatibility

**In-app purchases:** none


### LightingAssessor

[App page](https://appshunter.io/ios/app/lightingassessor/id1454732408)

Streamline lighting audits for electrical professionals. Capture detailed site surveys, reduce data entry, and export data to Excel or a web app for proposals and quotes. Works offline for convenience.

**Highlights:** Offline audit functionality, Reduced data entry, Digital project organization, Export data to Excel, Sync with web application, Intuitive software

**In-app purchases:** none


## Frequently asked questions

### Is AB Library free?

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

### Is LightingAssessor free?

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

### Which has better reviews, AB Library or LightingAssessor?

AB Library and LightingAssessor are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do AB Library or LightingAssessor have ads?

Neither AB Library nor LightingAssessor shows ads.

### Which is updated more often, AB Library or LightingAssessor?

AB Library ships an update every 10 months, and LightingAssessor every 3 weeks. Most recently, AB Library was updated on October 14, 2026 and LightingAssessor on October 10, 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.*