# Monarch2Go vs Peninsula Library System

The clearest difference is update cadence: Peninsula Library System at every 3 weeks against Monarch2Go's every 2 months. Monarch2Go's advantage is ratings volume (15 vs 3). 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 — 3.9 for Monarch2Go against 4.0 for Peninsula Library System. That said, the two scores are not equally well evidenced: Monarch2Go has 15 ratings behind it against 3, so its average is the more settled of the two.

Monarch2Go ships an update every 2 months, Peninsula Library System every 3 weeks. Both last shipped on August 9, 2026.

## The numbers

| Metric | Monarch2Go | Peninsula Library System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (15 ratings)](https://appshunter.io/ios/app/monarch2go/id1372591101/reviews) | **[4.0 (3 ratings)](https://appshunter.io/ios/app/peninsula-library-system/id6670559910/reviews)** |
| Number of ratings | **15** | 3 |
| Positive reviews | 27.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 50 MB | 50 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Monarch Library System](https://appshunter.io/developer/1565151506) | [Peninsula Library System](https://appshunter.io/developer/692170824) |

## What reviewers say

### Monarch2Go

[App page](https://appshunter.io/ios/app/monarch2go/id1372591101)

Access your local library's collection from anywhere. Borrow eBooks, audiobooks, and magazines, manage your account, and discover online learning resources. Your library card is conveniently stored within the app.

**Highlights:** Search library catalog, Manage library account, Place holds and renew materials, Access eBooks and audiobooks, Access magazines and online classes, Store library card

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

**In-app purchases:** none


### Peninsula Library System

[App page](https://appshunter.io/ios/app/peninsula-library-system/id6670559910)

Access multiple public libraries in San Mateo County from your mobile device. Manage holds, renew items, search the catalog, and use your digital library card for convenient access to resources.

**Highlights:** Access multiple county libraries, Place and manage holds, Renew checked out materials, Search library catalog, Digital library card

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

**In-app purchases:** none


## Frequently asked questions

### Is Monarch2Go free?

Monarch2Go is free to download, with no in-app purchases.

### Is Peninsula Library System free?

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

### Which has better reviews, Monarch2Go or Peninsula Library System?

Peninsula Library System is rated higher. Monarch2Go averages 3.9 out of 5 from 15 ratings, while Peninsula Library System averages 4.0 from 3 ratings.

### Do Monarch2Go or Peninsula Library System have ads?

Neither Monarch2Go nor Peninsula Library System shows ads.

### Which is updated more often, Monarch2Go or Peninsula Library System?

Monarch2Go ships an update every 2 months, and Peninsula Library System every 3 weeks. Most recently, Monarch2Go was updated on August 9, 2026 and Peninsula Library System on August 9, 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.*