# Inklings vs PDF Studio

The clearest difference is in-app purchases: Inklings at none against PDF Studio's 2. PDF Studio's advantage is update cadence (weekly vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Studio sells 2 in-app purchases, starting at $9.99 per year. Inklings asks for nothing beyond the download.

Inklings ships an update every 2 weeks, PDF Studio weekly. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Inklings | PDF Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 2 MB | 6 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Lloyd](https://appshunter.io/developer/1765871883) | [Birkan Aksoy](https://appshunter.io/developer/1626910993) |

## What reviewers say

### Inklings

[App page](https://appshunter.io/ios/app/inklings-where-ideas-begin/id6774580753)

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

**In-app purchases:** none


### PDF Studio

[App page](https://appshunter.io/ios/app/pdf-studio-reader-and-tools/id6781038759)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Studio Pro | $9.99 | per year |
| PDF Studio Pro (Lifetime) | $24.99 | one-time |


## Frequently asked questions

### Is Inklings free?

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

### Is PDF Studio free?

PDF Studio is free to download, with in-app purchases available.

### Do Inklings or PDF Studio have ads?

Neither Inklings nor PDF Studio shows ads.

### Which is updated more often, Inklings or PDF Studio?

Inklings ships an update every 2 weeks, and PDF Studio weekly. Most recently, Inklings was updated on October 6, 2026 and PDF Studio on October 14, 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.*