San Mateo County Libraries vs E
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
San Mateo County Libraries
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.
- Account management
- Catalog search
- Place holds
- Digital library card
- Event discovery
- Digital collection access
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The San Mateo County Libraries app is your connection to the library's services from your mobile device. Check your account, pay fines, renew items, search the catalog, place holds and use your digital library card. Find upcoming events, read our blogs, get directions to the nearest San Mateo County Libraries branch, and get easy access to our digital collection like eBooks/eAudiobooks, eVideos, eMusic and eMagazines.
E
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Meet the smart generation of locking solution which combines RFID and PIN with innovative BLE mobile access technology. The world’s first system of RF user card and smartphone access key synchronization along with the enhanced security algorithm provides more advanced and efficient approach towards managing the locker rooms at various kinds of venues, such as resorts, fitness, schools and universities, hospitals and clinics, private and government entities etc. Esmart Mobile access solution by Passtech includes two options, which are standalone offline and wireless online systems. Owing to this, the system is very flexible and adaptable to various types of conditions. Moreover, Esmart Mobile can be easily programmed to work in either free or assigned modes along with multi-user (many users are assigned to one lock) and multi-locker (one user manages more than one locker) functions. In addition to that, multi-functionality and accessibility via various credentials makes Esmart Mobile the best solution to meet even the most demanding requirements.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | San Mateo County Libraries | E |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (8 ratings) — better | — |
| Positive reviews | 47.1% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 35 MB |
| Age rating | 17+ | 4+ |
| Developer | Peninsula Library System | Passtech co., ltd |
In-app purchases
San Mateo County Libraries
No in-app purchases
E
No in-app purchases
Questions
Is San Mateo County Libraries free?
Is E free?
Do San Mateo County Libraries or E have ads?
Which is updated more often, San Mateo County Libraries or E?
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