# CARTology vs CMLibrary

The clearest difference is review sentiment: CARTology at 92% against CMLibrary's 33%. CARTology also leads on rating (4.8 vs 3.4) and ratings volume (1.3K vs 28). On price, update cadence, 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.

CARTology holds the better App Store score, 4.8 against 3.4. That said, the two scores are not equally well evidenced: CARTology has 1.3K ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 92% of CARTology's written reviews are positive against 33% of CMLibrary's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CARTology | CMLibrary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/cartology/id1368037662/reviews)** | [3.4 (28 ratings)](https://appshunter.io/ios/app/cmlibrary/id1590882442/reviews) |
| Number of ratings | **1.3K** | 28 |
| Positive reviews | **91.7% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | Free |
| Size | 81 MB | 22 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cabarrus County](https://appshunter.io/developer/1368037661) | [Public Library of Charlotte and Mecklenburg County](https://appshunter.io/developer/549687517) |

## What reviewers say

### CARTology

[App page](https://appshunter.io/ios/app/cartology/id1368037662)

Access garbage and recycling schedules for Cabarrus County, Concord, Kannapolis, and Harrisburg. Receive timely collection notifications directly within the app to stay informed about your waste management.

**Highlights:** Garbage and recycling schedules, Collection reminders, Notifications, Cabarrus County coverage, Concord, Kannapolis, Harrisburg support

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

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for trash/recycling schedule
- 👍 Useful notifications
- 👍 Easy to use
- 👍 Informative
- 👍 Great service

**What reviewers complain about**

- 🐛 App crashes
- 🐛 Unreliable for looking up disposal information

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- More specific recycling guidelines
- Improved notification system for iOS


### CMLibrary

[App page](https://appshunter.io/ios/app/cmlibrary/id1590882442)

Access a vast collection of books, e-books, audiobooks, movies, and music. Manage your library account, place holds, renew items, and discover new titles. Find library locations, events, and news.

**Highlights:** Access extensive catalog, Manage library account, Place holds and renew items, Scan book barcodes for holds, Download/stream e-books and audiobooks, Discover new titles and recommendations, View library events and news

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CARTology free?

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

### Is CMLibrary free?

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

### Which has better reviews, CARTology or CMLibrary?

CARTology is rated higher. CARTology averages 4.8 out of 5 from 1.3K ratings, while CMLibrary averages 3.4 from 28 ratings.

### Do CARTology or CMLibrary have ads?

Neither CARTology nor CMLibrary shows ads.

### Which is updated more often, CARTology or CMLibrary?

CARTology ships an update every 4 months, and CMLibrary every 4 months. Most recently, CARTology was updated on November 2, 2026 and CMLibrary on November 3, 2026.

---

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