# ACE Library vs GCLS Mobile

The clearest difference is rating: GCLS Mobile at 4.0 against ACE Library's 2.4. GCLS Mobile also leads on review sentiment (40% vs 3%) and update cadence (every 3 weeks vs every 5 months). ACE Library's advantage is ratings volume (42 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

GCLS Mobile holds the better App Store score, 4.0 against 2.4. That said, the two scores are not equally well evidenced: ACE Library has 42 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 3% of ACE Library's written reviews are positive against 40% of GCLS Mobile's.

ACE Library ships an update every 5 months, GCLS Mobile every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ACE Library | GCLS Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (42 ratings)](https://appshunter.io/ios/app/ace-library/id894077537/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/gcls-mobile/id1564350047/reviews)** |
| Number of ratings | **42** | 4 |
| Positive reviews | 3.3% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 75 MB | 49 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [American Council on Exercise (ACE)](https://appshunter.io/developer/816467405) | [Greenville County Library System](https://appshunter.io/developer/1861927170) |

## What reviewers say

### ACE Library

[App page](https://appshunter.io/ios/app/ace-library/id894077537)

Access and store purchased eBooks from ACE. Review digital texts to prepare for certification exams. Includes additional ACE ProSource articles for further reading.

**Highlights:** Exclusive eBook access, Digital text review, Certification exam preparation, ACE ProSource articles, Offline reading

**Features:** macOS Compatibility

**In-app purchases:** none


### GCLS Mobile

[App page](https://appshunter.io/ios/app/gcls-mobile/id1564350047)

Manage your library account on the go. Access your digital library card, place holds, and find library locations. Connect with your local library system easily.

**Highlights:** Manage multiple library cards, Digital library card for checkouts, Place holds on materials, Scan ISBN codes, Library location directions, Connect with the library

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ACE Library free?

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

### Is GCLS Mobile free?

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

### Which has better reviews, ACE Library or GCLS Mobile?

GCLS Mobile is rated higher. ACE Library averages 2.4 out of 5 from 42 ratings, while GCLS Mobile averages 4.0 from 4 ratings.

### Do ACE Library or GCLS Mobile have ads?

Neither ACE Library nor GCLS Mobile shows ads.

### Which is updated more often, ACE Library or GCLS Mobile?

ACE Library ships an update every 5 months, and GCLS Mobile every 3 weeks. Most recently, ACE Library was updated on October 23, 2026 and GCLS Mobile on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*