# Kent Libraries vs General Chemistry

The clearest difference is price: Kent Libraries at Free against General Chemistry's $3.99. Kent Libraries also leads on iOS requirement (15.6 vs 17.0). General Chemistry's advantage is update cadence (monthly vs every 5 months). On ads, in-app purchases and device support there is nothing between them.

Kent Libraries is free to download; General Chemistry costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kent Libraries ships an update every 5 months, General Chemistry monthly. Both last shipped on October 18, 2026.

## The numbers

| Metric | Kent Libraries | General Chemistry |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/general-chemistry/id1539497557/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 40.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | **Free** | Paid |
| Size | 48 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Kent County Council](https://appshunter.io/developer/906697164) | [Roman Volinsky](https://appshunter.io/developer/977951850) |

## What reviewers say

### Kent Libraries

[App page](https://appshunter.io/ios/app/kent-libraries/id542626079)

Manage your library account on the go. Search the catalog, renew borrowed items, and place holds on new books. Access your local library resources from your iOS device.

**Highlights:** Manage library account, Search catalog, Renew books, Reserve books, Access local library

**Features:** macOS Compatibility

**In-app purchases:** none


### General Chemistry

[App page](https://appshunter.io/ios/app/general-chemistry/id1539497557)

Access essential chemical data and powerful calculators for common chemistry tasks. Features an interactive periodic table with detailed element information and tools for balancing reactions, calculating pH, ideal gas properties, and molecular weights.

**Highlights:** Interactive periodic table, Detailed element information, Chemical reaction balancer, pH calculator, Ideal gas calculator, Molecular weight calculator

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

**In-app purchases:** none


## Frequently asked questions

### Is Kent Libraries free?

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

### Is General Chemistry free?

General Chemistry costs $3.99, with no in-app purchases.

### Do Kent Libraries or General Chemistry have ads?

Neither Kent Libraries nor General Chemistry shows ads.

### Which is updated more often, Kent Libraries or General Chemistry?

Kent Libraries ships an update every 5 months, and General Chemistry monthly. Most recently, Kent Libraries was updated on October 18, 2026 and General Chemistry on October 18, 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.*