# Sternzy vs PDF Scanner AI

The clearest difference is ads: Sternzy at none against PDF Scanner AI's shown. Sternzy also leads on update cadence (weekly vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Sternzy sells 4 one-off in-app purchases and PDF Scanner AI sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sternzy ships an update weekly, PDF Scanner AI every 2 weeks. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sternzy | PDF Scanner AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 3 MB | 19 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David Stern](https://appshunter.io/developer/6771868079) | [PSSD Limited](https://appshunter.io/developer/6788454744) |

## What reviewers say

### Sternzy

[App page](https://appshunter.io/ios/app/sternzy-docscan/id6778944240)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $0.99 Coffee Tip | $0.99 | one-time |
| $1.99 Coffee Tip | $1.99 | one-time |
| $4.99 Coffee Tip | $4.99 | one-time |
| $9.99 Coffee Tip | $9.99 | one-time |


### PDF Scanner AI

[App page](https://appshunter.io/ios/app/pdf-scanner-ai-scanner-app/id6788454742)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Annual Premium | $79.99 | per year |


## Frequently asked questions

### Is Sternzy free?

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

### Is PDF Scanner AI free?

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

### Do Sternzy or PDF Scanner AI have ads?

PDF Scanner AI shows ads; Sternzy does not.

### Which is updated more often, Sternzy or PDF Scanner AI?

Sternzy ships an update weekly, and PDF Scanner AI every 2 weeks. Most recently, Sternzy was updated on November 5, 2026 and PDF Scanner 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.*