# OpenIntelligence vs PDF Indexer

The clearest difference is in-app purchases: PDF Indexer at none against OpenIntelligence's 4. PDF Indexer also leads on update cadence (every 2 days vs weekly) and rating (5.0 vs 4.8). OpenIntelligence's advantage is ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. OpenIntelligence sells 4 in-app purchases, starting at $4.99 per month. PDF Indexer asks for nothing beyond the download.

PDF Indexer holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

OpenIntelligence ships an update weekly, PDF Indexer every 2 days. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OpenIntelligence | PDF Indexer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/openintelligence/id6756559175/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pdf-indexer/id6799589624/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Freemium | **Ad-supported** |
| Size | 170 MB | 53 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Gunnar Hostetler](https://appshunter.io/developer/1768599987) | [MATTHEW BYONG BAE](https://appshunter.io/developer/6776132813) |

## What reviewers say

### 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 | $4.99 | per month |
| Pro Annual | $24.99 | per year |
| Document Pack | $2.99 | one-time |
| Lifetime | $49.99 | one-time |


### PDF Indexer

[App page](https://appshunter.io/ios/app/pdf-indexer/id6799589624)

This app creates fast navigation for PDFs by turning title-to-page mappings into searchable indexes. It allows you to import mappings from various file formats and opens directly to the mapped page within the PDF. All data is stored locally on your device for privacy.

**Highlights:** Search across multiple indexed PDFs, Exact, prefix, substring, and alias matching, Jump directly to mapped pages, Import mappings from CSV, JSON, XLSX, and text, Page-offset calibration, Mapping correction and export, Local-first data storage

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenIntelligence free?

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

### Is PDF Indexer free?

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

### Which has better reviews, OpenIntelligence or PDF Indexer?

PDF Indexer is rated higher. OpenIntelligence averages 4.8 out of 5 from 4 ratings, while PDF Indexer averages 5.0 from 2 ratings.

### Do OpenIntelligence or PDF Indexer have ads?

PDF Indexer shows ads; OpenIntelligence does not.

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

OpenIntelligence ships an update weekly, and PDF Indexer every 2 days. Most recently, OpenIntelligence was updated on October 26, 2026 and PDF Indexer on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*