# Whitby Public Library vs PenIt AI

The clearest difference is in-app purchases: Whitby Public Library at none against PenIt AI's 5. PenIt AI's advantage is update cadence (every 9 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PenIt AI sells 5 in-app purchases, starting at $6.99 per month. Whitby Public Library asks for nothing beyond the download.

Whitby Public Library ships an update every 4 months, PenIt AI every 9 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Whitby Public Library | PenIt AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Size | 28 MB | 4 MB |
| Requires iOS | **16.2** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Town of Whitby Public Library Board](https://appshunter.io/developer/1575613307) | [Jim Mayers](https://appshunter.io/developer/1850813452) |

## What reviewers say

### Whitby Public Library

[App page](https://appshunter.io/ios/app/whitby-public-library/id6754035761)

**In-app purchases:** none


### PenIt AI

[App page](https://appshunter.io/ios/app/penit-ai/id6788761925)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PenIt AI Pro Monthly | $6.99 | per month |
| Basic | $7.99 | per month |
| PenIt AI Pro Yearly | $49.99 | per year |
| Basic | $74.99 | per year |
| Pemium | $299.99 | per year |


## Frequently asked questions

### Is Whitby Public Library free?

Whitby Public Library is free to download, with no in-app purchases.

### Is PenIt AI free?

PenIt AI is free to download, with in-app purchases available.

### Do Whitby Public Library or PenIt AI have ads?

Neither Whitby Public Library nor PenIt AI shows ads.

### Which is updated more often, Whitby Public Library or PenIt AI?

Whitby Public Library ships an update every 4 months, and PenIt AI every 9 days. Most recently, Whitby Public Library was updated on October 25, 2026 and PenIt AI on October 28, 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.*