# DeCenter AI vs PDF Document Scanner & OCR

The clearest difference is in-app purchases: DeCenter AI at none against PDF Document Scanner & OCR's 5. DeCenter AI also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PDF Document Scanner & OCR sells 4 in-app purchases, starting at $8.99 per 7 days. DeCenter AI asks for nothing beyond the download.

DeCenter AI ships an update every 2 weeks, PDF Document Scanner & OCR every 10 days. The most recent releases landed on September 27, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | DeCenter AI | PDF Document Scanner & OCR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 81 MB | 50 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [DeCenter Global Limited](https://appshunter.io/developer/1834840665) | [ZEE BROTHERS PVT. LIMITED](https://appshunter.io/developer/1841875936) |

## What reviewers say

### DeCenter AI

[App page](https://appshunter.io/ios/app/decenter-ai/id6751386101)

Engage in missions to support AI development and earn rewards. Contribute to various tasks, from social engagement to AI ethics audits, and help build a transparent AI community. Generate AI images and track your progress and impact.

**Highlights:** Diverse AI missions, Earn GEM rewards, AI image generation, TrustNet reputation building, Referral bonuses, Leaderboard and badges

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Document Scanner & OCR

[App page](https://appshunter.io/ios/app/pdf-document-scanner-and-ocr/id6752948413)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $8.99 | per 7 days |
| Weekly Subscription | $9.99 | per 7 days |
| Weekly Subscription | $10.99 | per 7 days |
| Yearly Subscription | $49.99 | per year |


## Frequently asked questions

### Is DeCenter AI free?

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

### Is PDF Document Scanner & OCR free?

PDF Document Scanner & OCR is free to download, with in-app purchases available.

### Do DeCenter AI or PDF Document Scanner & OCR have ads?

Neither DeCenter AI nor PDF Document Scanner & OCR shows ads.

### Which is updated more often, DeCenter AI or PDF Document Scanner & OCR?

DeCenter AI ships an update every 2 weeks, and PDF Document Scanner & OCR every 10 days. Most recently, DeCenter AI was updated on September 27, 2026 and PDF Document Scanner & OCR on October 12, 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.*