# PDF Studio vs OpenIntelligence

The clearest difference is update cadence: OpenIntelligence at every 6 days against PDF Studio's every 2 weeks. PDF Studio's advantage is iOS requirement (17.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Studio sells 3 in-app purchases, starting at $2.49 per 7 days and OpenIntelligence sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

PDF Studio ships an update every 2 weeks, OpenIntelligence every 6 days. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | PDF Studio | OpenIntelligence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/openintelligence/id6756559175/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 6 MB | 167 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Boris Spiro](https://appshunter.io/developer/1853293003) | [Gunnar Hostetler](https://appshunter.io/developer/1768599987) |

## What reviewers say

### PDF Studio

[App page](https://appshunter.io/ios/app/pdf-studio-scan-and-edit-docs/id6755344174)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.49 | per 7 days |
| Monthly Premium | $4.99 | per month |
| Annual Premium | $29.99 | per year |


### OpenIntelligence

[App page](https://appshunter.io/ios/app/openintelligence/id6756559175)

Transform your files into a private, searchable knowledge base. This app uses advanced AI to answer your questions with citations, supporting a wide range of document, audio, video, and code formats. It's designed for Apple devices with Apple Intelligence capabilities.

**Highlights:** Private knowledge base creation, Citation-backed Q&A, Supports 50+ file formats, On-device transcription and indexing, Hybrid search (keyword & vector), Multiple query modes, Background file ingestion

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Annual | $29.99 | per year |
| Document Pack | $2.99 | one-time |
| Lifetime Cohort | $59.99 | one-time |


## Frequently asked questions

### Is PDF Studio free?

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

### Is OpenIntelligence free?

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

### Do PDF Studio or OpenIntelligence have ads?

Neither PDF Studio nor OpenIntelligence shows ads.

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

PDF Studio ships an update every 2 weeks, and OpenIntelligence every 6 days. Most recently, PDF Studio was updated on October 2, 2026 and OpenIntelligence on October 4, 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.*