# San Mateo County Libraries vs E

The clearest difference is update cadence: E at every 3 weeks against San Mateo County Libraries's every 2 months. E also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

San Mateo County Libraries ships an update every 2 months, E every 3 weeks. The most recent releases landed on September 12, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | San Mateo County Libraries | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (8 ratings)](https://appshunter.io/ios/app/san-mateo-county-libraries/id1371647186/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 47.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 50 MB | 35 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Peninsula Library System](https://appshunter.io/developer/692170824) | [Passtech co., ltd](https://appshunter.io/developer/1230326855) |

## What reviewers say

### San Mateo County Libraries

[App page](https://appshunter.io/ios/app/san-mateo-county-libraries/id1371647186)

Access library services from your mobile device. Manage your account, search the catalog, place holds, and use your digital library card. Discover events and access a wide range of digital resources like eBooks and eAudiobooks.

**Highlights:** Account management, Catalog search, Place holds, Digital library card, Event discovery, Digital collection access

**Features:** Vision Pro support

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-smart-mobile/id1536872427)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is San Mateo County Libraries free?

San Mateo County Libraries is free to download, with no in-app purchases.

### Is E free?

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

### Do San Mateo County Libraries or E have ads?

Neither San Mateo County Libraries nor E shows ads.

### Which is updated more often, San Mateo County Libraries or E?

San Mateo County Libraries ships an update every 2 months, and E every 3 weeks. Most recently, San Mateo County Libraries was updated on September 12, 2026 and E on September 19, 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.*